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Job Description Senior Avionics Engineer - Take Charge of Cutting-Edge Spacecraft Technology! El Segundo, CA | On-site Opportunity Summary Join a pioneering company that is redefining the boundaries of space exploration with its innovative propulsion technology. Our team is composed of top engineers with experience from leading aerospace companies, and we're on a mission to broaden access to high-energy orbits. As a Senior Avionics Engineer, you will have an exciting opportunity to lead the development of critical technology for our spacecraft, including our upcoming vehicle scheduled for launch in early 2026. With a focus on high agency and ownership, this role promises growth and expanded responsibilities as we continue to evolve. About Us We are at the forefront of space technology, developing groundbreaking spacecraft designed for the most challenging missions. Our vision is to revolutionize access to orbits ranging from LEO to cislunar space using our proprietary propulsion systems. Headquartered in Los Angeles, our innovative approach is backed by top-tier venture funding, allowing us to push the envelope in space exploration. Job Duties • Spearhead the entire electrical design process, including testing, qualification, and integration for our spacecraft, • Drive avionics development from initial concept through to flight-ready systems and integration, • Manage the design and interfacing of avionics, encompassing requirements capture, component selection, analysis, and system-level trade-offs, • Prototype and validate flight computers, power systems, communications, and electronic systems, • Ensure system reliability through root cause and corrective action investigation, debugging, and documentation, • Conduct hardware-in-the-loop testing and develop testbeds for system validation, • Lead efforts to comply with relevant government and safety standards Qualifications • BS in aerospace engineering, electrical engineering, computer science, computer engineering, or a related field, • 2+ years of experience in developing space electronics and avionic systems, • Proven track record in architecting and qualifying avionics systems for spaceflight, • Familiarity with government and MIL-spec standards, • Hands-on experience in circuit design and using electronics test equipment, • Experience with Altium Designer or similar tools, • Proficient in troubleshooting electronics at both the board and system levels, • Background in a fast-paced startup environment or equivalent experience, • Strong engineering foundation with a first-principles approach to problem-solving Preferred Experience • Experience with Altium Designer or similar software is a plus, • Familiarity with relevant government and MIL-spec standards Why Join Us • Excellent benefits and a strong sense of ownership in the work, • Venture-backed and well-funded, providing stability and room for growth, • Opportunity to work alongside industry-leading experts in a dynamic and innovative environment Compensation Details $120,000 - $180,000

Job DescriptionDescriptionVenturi Astrolab, Inc. (Astrolab) is pioneering new ways to explore and operate on distant planetary bodies. We are singularly focused on designing, building, and operating a fleet of multi-purpose commercial planetary rovers to extend and enhance humanity’s presence in the solar system. We are seeking motivated, creative, and exceptional people to join our world-class team. As a Human Factors Engineer supporting the NASA Lunar Terrain Vehicle Services (LTVS) within the Extravehicular Activity and Human Surface Mobility Program (EHP), you will champion the human-centered design of Astrolab’s FLEX-LTV, which will be used by Artemis Crew to traverse and explore the lunar environment. You will work closely with cross-disciplinary teams including Systems Engineering & Integration (SEI), Subsystem Responsible Engineers (REs), Crew Accommodations, User Interface (UI) Designers, Simulation & Training, and Operators/Astronauts to ensure that human safety, performance, and usability are engrained in the LTV design. You will report to the Astrolab Human Systems Integration (HSI) Lead under the Program Management Office (PMO). What you'll do: • Carry out the HSI Plan across the development lifecycle in support of a safe & efficient user experience (UX) for our astronauts, • Work with our partners at Axiom Space to align the LTV design to suited crew capabilities & limitations while prioritizing safety, operational effectiveness, and crew time efficiency, • Collaborate with engineers & designers to optimize for suited crew use of LTV displays, controls, and mechanical interfaces, • Coordinate cross-disciplinary input & testing of LTV Crew Task Lighting to ensure the necessary visual access of all visual targets according to crew procedures and mission objectives, • Utilize Figma and other rapid prototyping tools to produce interactive graphical user interface (GUI) wireframes and mockups in alignment with Artemis GUI standards and commonality, • Conduct human factors engineering analyses and evaluations (e.g., Task Analysis (TA), Human Error Analysis (HEA), Human-in-the-Loop (HITL) Testing, Crew Operational Loads, Risk Assessments, etc.) and process findings for design and/or operational impacts, • Support simulation & training events with astronauts and representative participants using Astrolab test artifacts located at Odyssey Space Research and the Texas A&M Space Institute, • Manage, adjudicate, and track the flow of human factors design feedback/concerns from ticket creation through design unit implementation in compliance with human systems requirements, • Assist SEI efforts in executing the Verification, Validation, & Certification Plan as it pertains to the closure of human systems requirements and total-system human-rating, • Inform and attend cadenced discussions with NASA to share LTV development progress and review key decisions/changes, • Bachelor’s degree in Human Factors, Human-Computer Interaction, Human-Centered Design, Ergonomics, or another relevant field (e.g., Biomechanics, Psychology, Industrial Design), • 0-5 years of experience in human factors engineering, human systems integration, and/or UI/UX development including user testing, preferably in human spaceflight or a related industry, • Familiarity with NASA-STD-3001, MIL-STD-1472, and/or the FAA HF-STD-001, • Understanding of project management and systems engineering processes, tools, and methodologies, • Strong problem-solving skills with keen attention to detail, • Excellent verbal communication, written communication, and negotiation skills, • Ability to empathize with user needs and elicit valuable user/stakeholder feedback, • Ability to work effectively in a cross-disciplinary team, • Ability to organize and balance multiple competing priorities in a fast-paced work environmentNice to Haves, • Graduate degree in Human Factors, Human-Computer Interaction, Human-Centered Design, Ergonomics, or another relevant field (e.g., Biomechanics, Psychology, Industrial Design), • Experience in space architecture, bioastronautics, aerospace physiology, optical engineering, vehicle cabin/interior development, and/or extreme environment analogs, • Knowledge of space extravehicular activity (EVA) systems (e.g., pressurized suits, EVA tools), • Join a team of best-in-class engineers building the foundation of planetary surface exploration, • Equity ownership in the company, • Comprehensive health benefits, including medical, dental, vision, and mental health support, • 401(k) plan with company match, • Flexible PTO and parental leave, • Home office set up reimbursement, • Fully flexible and remote friendly work environment, • Weekly lunch stipend, plus complimentary snacks and beverages on-site, • Once a month social hour on-site with food and drinks

Job DescriptionDescriptionVenturi Astrolab, Inc. (Astrolab) is pioneering new ways to explore and operate on distant planetary bodies. We are singularly focused on designing, building, and operating a fleet of multi-purpose commercial planetary rovers to extend and enhance humanity’s presence in the solar system. We are seeking motivated, creative, and exceptional people to join our world-class team. As an EMC Engineer, you will be responsible for ensuring Avionics components are designed to endure the harsh electromagnetic environmental effects of interplanetary space. You will play a pivotal role in defining the design criteria for state-of-the-art avionics and electro-mechanical systems for the lunar surface with a strong focus on electromagnetic compatibility, in-space charging effects, and interdisciplinary requirements. You will be joining a company at the ground-level and have immense influence over the future of lunar exploration. What you'll do: • Collaborate closely within cross-functional Engineering teams to capture requirements, lead design trades with respect to EMI/EMC, and integrate the design into the rover systems., • Contribute to full avionics and electro-mechanical systems/subsystems from system to component level with specific focus on E3 design criteria and operational/survivability requirements., • Analyze and contribute to designs relating to the effects of circuit and power system grounding architectures, structural electrical bonding, circuit isolation, shielding effectiveness, radiated/conducted emissions and susceptibility, near field/far field electromagnetics, transient protection, signal and power integrity, and general RF compatibility., • Troubleshoot EMI issues from board to system level., • Operate and automate a variety of EMI, RF, and electronics test equipment (spectrum analyzers, network analyzers, signal generation, oscilloscopes) within the context of avionics development and in house EMC testing., • Create and update technical documentation including command media, system diagrams, schematics, interface control documents, procedures, work and/or build orders, vendor and payload requirements, and test/anomaly reports., • Bachelor’s degree in electrical engineering, physics, or other engineering discipline., • 5+ years of experience in EMI/EMC requirements, analysis, design, and testing for spacecraft systems and/or avionics component design (academic and personal projects apply)., • Proficient in the use of lab equipment such as oscilloscopes, multimeters, signal generators, logic analyzers, etc., • Proficient with Analytics/Modeling/Simulation tools such as LTSpice, and experience with electrical circuit analysis using simulation tools such as Spice or equivalent., • Familiarity with SMC-S-016 testing requirements, and testing per SMC-S-016., • Knowledge of electrical safety and EMC commercial compliance standards and/or testing., • MIL-STD-461 experience across the full range of EMC test (radiated susceptibility, radiated emissions, conducted susceptibility, conducted emissions) standards., • Experience in high power avionics system designs for spacecraft including: LDO Regulators, Buck/Boost converters, power line filters and various spacecraft grounding schemes for high voltage systems., • Experience in motor controller system designs for brushless DC motors (BLDC) and permanent magnet synchronous motors (PMSM) in both low and high voltage systems., • Ability to read, interpret and follow circuit schematics, PCB layouts, engineering drawings, BOMs, cable harnesses, wiring schematics, interface diagrams, layout drawings, mechanical drawings, and CAD software., • Creative problem solver that can assess risk and make collaborative design and development decisions., • Strong presentation experience in highly technical design forums and reviews (Preliminary Design Reviews, Critical Design Reviews, Flight Readiness Reviews, etc.)., • Experience with NX or similar CAD software including electrical harness routing., • Work with a team of best-in-class engineers building the foundation of planetary surface exploration, • Ownership in the company, • Medical, dental, and vision coverage, • 401(k) with matching, • Flexible time off and parental leave, • On-site snacks, beverages, and 2x weekly lunches, • Flexible work environment

Job DescriptionPlease Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team. We are seeking a Principal Power Electronics Engineer I (2025538) to join our growing spacecraft payload development team. In this position, you will contribute across the entire development lifecycle of next-generation power electronics hardware for satellites and space power systems payloads—from leading the definition of power system architectures and trade studies to detailed circuit design, simulation, printed circuit board (PCB) layout, verification and integration testing, production transition, and manufacturing support. DUTIES AND RESPONSIBILITIES * Define electrical power system architecture, and derive power subsystem requirements * Design DC-DC power converters, motor drives, inverters, power management and control circuits from concept to production release * Perform detailed design for low to high complexity analog and power electronics circuits ranging from single DC-DC power converters to multi-output power supply modules * Perform modeling and analysis of analog and power electronics designs including worst-case circuit analysis (WCA), stress analysis, small signal modeling analysis, failure modes and effects analysis (FMEA), reliability analysis, and power integrity analysis * Develop design verification test plans, requirement compliance matrices, system integration and qualification test plans, and production acceptance test plans for power converters and power supply designs * Lead board bring-up and design verification testing of power electronics circuits and modules * Lead system integration, qualification campaigns, and release of analog and power electronics designs into production * Mentor younger engineers and foster knowledge sharing * Lead a small team of power electronics engineers to drive project execution * Perform research and monitor power electronics industry trends to drive innovation and generate intellectual property in this area REQUIREMENTS AND MINIMUM QUALIFICATIONS * Bachelor of Science (BS) degree or higher in Electrical Engineering (or related) from an accredited university. * Minimum of 9 years of experience designing analog and power electronics * Experience working with electrical power systems and subsystems, including developing power architecture and power requirements, performing trade studies for size, weight, power, and cost optimization (SWAP-C), selecting power converter topologies, and defining power management and control blocks * Experience with modeling and control of DC-DC converters and power stage design of different isolated and non-isolated DC-DC power converters (e.g. discrete linear regulators, Buck, Boost, Buck-boost, Flyback, Forward, Half-bridge, Full bridge, and Resonant converters) * Experience designing custom signal and power magnetics, and power filters for low noise and electromagnetic compatibility (EMC) * Experience developing design verification test plans, requirement compliance matrices, system integration and qualification test plans, and production acceptance test plans * Experience performing worst-case circuit analysis (WCA), stress analysis, failure modes and effects analysis (FMEA), and reliability analysis for power supplies * Extensive hands-on experience with testing and troubleshooting electronics and power converters using laboratory instruments such as oscilloscopes, impedance analyzers, spectrum analyzers, electronic loads, and signal generators * Experience with electronics schematic capture and printed circuit board (PCB) layout tools such as Altium, OrCAD, Allegro or Xpedition * Experience with analysis and simulation tools such as SPICE, LTSPICE, SIMetrix/SIMPLIS, PLECS, Simulink, MATLAB, MathCAD, ANSYS Q3D and SiWave, or HyperLynx * Excellent written and verbal communication skills PREFERRED EXPERIENCE * Master of Science or PhD in Electrical Engineering with research focus in power electronics * Experience designing high-reliability analog and power electronics for automotive, space or defense applications * Knowledge of space radiation environments and radiation effects in electronics * Experience in power electronics applications utilizing GaN or SiC wide bandgap power semiconductor devices * Experience running board-level power integrity simulation using tools such as Ansys SiWave, or HyperLynx * Experience with soft switching and resonant power converter topologies (e.g. LLC, CLLC, series resonant, phase shifted full bridge, dual active bridge, etc.) * Experience with power stage design for inverters and motor drives * Knowledge of modeling and control of inverters and motor drives * Experience with advanced control schemes for DC-DC power converters (e.g. voltage mode with feedforward control, constant on-time control, V2 constant on-time control, phase shift modulation, average current mode control) * Experience with isolation and grounding, failure mode effects analysis and fault tolerant design, and thermal management of power electronics * Programming skills to support hardware test and data processing (Python, MATLAB, etc.) * Knowledge of maximum power point tracking (MPPT) for solar power applications, battery sizing and battery management systems, power conversion for electric propulsion systems, power conditioning, power management, and power distribution units for spacecraft technology * Experience designing and testing power electronics units to meet industry standards and requirements in the automotive, industrial, space or military markets (e.g., FCC, CISPR, UL safety, ECSS, NASA, MIL standards) CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate’s work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans. CesiumAstro is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law. Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Job Description Divergent is a technology company that has architected, invented, built, and commercialized an end-to-end factory system called the Divergent Adaptive Production System (DAPS) that comprehensively uses machine learning to optimally engineer, additively manufacture, and flexibly assemble complex integrated vehicle structures and subsystems. Products created using DAPS are superior in performance, lower in cost, rapidly customizable to meet mission and customer-specific requirements, faster to market, and scalable on demand to high volume production. Divergent is a qualified Tier 1 supplier to global automotive OEMs, and Divergent is now expanding to support mission critical needs in the Aerospace and Defense sector. Join us to be a part of this transformative journey, where your impact will shape the future of technology and production. Purpose In this role, you are essential to ensure that Divergent components and assemblies never compromise on safety, durability, or performance. You'll be hands-on—designing custom hardware, building test methods from the ground up, and leading the validation work that directly shapes our engineering decisions and the quality of the final product. The Role We're looking for a seasoned Test Engineer who balances deep mechanical fundamentals with a sharp eye for design-for-test and structural validation. You should be a CAD expert who thrives on the shop floor, someone who can bridge the gap between engineering theory and robust, repeatable hardware by working closely with multiple teams and suppliers. Team collaboration and strong communication are pivotal for this role. Mechanical Design & Manufacturing Support • Design custom test fixtures, rigs, tooling, and mechanical assemblies using Siemens NX., • Produce detailed drawings, GD&T, build instructions, and manufacturing documentation., • Work closely with suppliers and internal teams to ensure manufacturability and high-quality builds., • Good understanding of MTS hydraulic systems and the integration of hydraulic actuators., • Develop test plans, procedures, and schedules for component and system-level validation projects., • Utilize Atlassian Jira and Confluence for project tracking and technical documentation., • Collaborate with design, manufacturing, materials, and quality teams to define test requirements., • Communicate test scope, timelines, risks, and resource needs to stakeholders., • Lead setup, instrumentation, and execution of structural component tests., • Operate MTS TestSuite for automated test control and execution., • Configure and manage hydraulic actuators, manifolds, and servo valves for structural loading., • Install and calibrate sensors including load cells, strain gauges, and LVDTs., • Utilize various DAQ software packages for high-speed data acquisition and real-time monitoring., • Ensure accurate, reliability, and safe operation of all tests., • Analyze test data to evaluate component performance and verify compliance with engineering specifications., • Generate clear, comprehensive test reports with conclusions and recommendations., • Maintain complete documentation of test procedures, configurations, and results., • Ensure adherence to relevant industry standards and internal processes., • Identify opportunities to improve test methods and laboratory workflows., • Recommend upgrades to test equipment, instrumentation, or documentation systems., • Uphold all safety protocols within the lab environment., • Participate in risk assessments, equipment readiness checks, and safety reviews. Basic Qualifications, • Ability to lawfully access information and technology that is subject to US export controls, • Bachelor's degree in mechanical engineering or related discipline., • 5+ years of experience in mechanical design, manufacturing engineering, or structural test engineering., • Proficiency in CAD (Siemens NX)., • Hands-on experience with mechanical assembly, hydraulic actuators, and instrumentation (Load Cells/Strain Gauges)., • Experience with data acquisition systems such as Dewesoft or NI FlexLogger., • Strong communication, documentation, and project coordination skills., • Self-motivated, organized, and effective in a fast-paced R&D environment. Preferred Qualifications, • Strong understanding of:, • Structural testing (fatigue and durability), • MTS TestSuite and Atlassian Jira/Confluence, • Data acquisition and analysis tools, • Experience with CAE tools like Hypermesh and ANSA., • Experience with Zeiss Aramis system, • Shaker/Vibe table experience in setup and running vibration tests, • MIL-STD spec, knowledge and know how Work Environment • Factory and office environment., • Work near moving mechanical parts., • Holistic Compensation Package: Enjoy a world-class compensation package that includes a competitive salary, equity plan, and discretionary results-based incentive bonus opportunities, ensuring you're truly valued for your contributions., • Wellness and Time Off: Embrace a healthy lifestyle with paid vacation, sick time, and company holidays, including a year-end shutdown to recharge. We support growing families with paid parental leave, recognizing the importance of bonding time., • Comprehensive Health and Wellness: Prioritize your well-being with our comprehensive health and wellness benefits, offering both HMO and Premium PPO options. Additionally, benefit from company-sponsored life insurance and short and long-term disability coverage for peace of mind., • Investment in Growth: We're committed to your professional development. Take advantage of reimbursement opportunities for learning and development initiatives, empowering you to continuously expand your skill set and reach peak performance., • Collaborative and High-Performing Environment: Join our collaborative, dynamic, and high-performing team within a fast-paced, mission-driven company. Together, we're disrupting the traditional manufacturing industry, fostering innovation, and integrating people and technology to reduce our footprint. Equal Employment Opportunity Divergent is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected characteristic. Divergent provides affirmative action in employment for qualified Individuals with Disabilities and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans' Readjustment Assistance Act. EEO Poster In order to adjust to changes in our business, it may become necessary to add, remove or modify certain duties and responsibilities, or to reassign you to another job position. From time to time you may be asked to work on special projects or to assist with other work. Your cooperation and assistance in performing such additional work is expected. E-Verify: Right to Work Our company participates in E-Verify. E-Verify is a program that electronically confirms a candidate's eligibility to work in the United States after completing the Employment Eligibility Verification (Form I-9). The information provided on the Form I-9 is compared to the records contained in the Social Security Administration and Department of Homeland Security (DHS) databases. This helps employers verify the identity and employment eligibility of newly hired employees. Eligibility to Work Poster (English) | Eligibility to Work Poster (Spanish) Los Angeles Fair Chance Initiative for Hiring Ordinance (FCIHO) Pursuant to the Los Angeles Fair Chance Initiative for Hiring Ordinance (FCIHO), we will consider for employment qualified applicants with arrest and conviction records. No agencies, no solicitations, and no calls please.

Job Description Company Overview Rangeview is on a mission to build the foundry system that reindustrializes America. We exist to break the legacy manufacturing trap by reinventing critical production for the twenty‑first century. Through advanced software, deep automation, breakthroughs in materials science, and modern financing strategies, Rangeview rewrites both the cost curve and the power structure of making metal parts. Job Summary As a Mechanical Automation Engineer, you will design, develop, document, test, and commission automated manufacturing equipment. A successful candidate for this role will demonstrate determination, integrity, curiosity, and technical capability. We are currently hiring for L1(entry level) - L3IC (Senior). Job Responsibilities • Design and develop manufacturing equipment from concept to production,, • Evaluate, qualify, and engage with vendors for components, subsystems, and entire pieces of manufacturing equipment., • Perform failure mode analysis to ensure equipment is safe, reliable, and performant, • Collaborate with Production, M&P, and other peer teams to ensure alignment of projects to business goals, • Resolve issues encountered in production. Develop and test engineering changes as necessary., • Ensure equipment meets requirements for throughput, quality, safety, footprint., • Identify and drive improvement projects to improve current manufacturing process, • 2+ years of engineering experience in aerospace, automation, and/or manufacturing, • Bachelor's degree in Mechanical, Mechatronics, or similar Engineering discipline, or demonstrated equivalent experience., • Familiarity with other mechanical design tools (CAD, FEA, PLM, etc.), • Hands on experience in a manufacturing environment, • Strong Mechanical Design Skills (materials selection, statics/dynamics, tolerancing, component selection, etc.), • Experience with investment casting, vacuum melting & casting, heat treatment, ceramics manufacturing, or similar, • Familiarity with SLA printers, furnaces or high-vacuum systems., • Familiarity with highly regulated production environments and safety-critical equipment, • Familiarity with industrial controls (PLC, HMI, common controls components), • Has had ownership over automated equipment builds. Please note that the salary information shown below is a general guideline. Salaries are based on demonstrated candidate experience and qualifications, as well as market and business considerations. • Level 1 : $90,000-$110,000 plus equity, • Level 2: $108,000-$132,000, plus equity Rangeview offers a competitive benefits package, including unlimited PTO, medical, dental, and vision insurance. Compliance Rangeview is a DDTC-registered, ITAR-compliant business. To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Rangeview is an Equal Opportunity Employer; employment with Rangeview is governed on the basis of merit and aptitude and will not be influenced in any manner by any legally protected status.

Job Description Lead Mechanical Automation Engineer - Join a Fast-Growing Startup Advancing Next-Generation Manufacturing! El Segundo, CA | On-site Opportunity Summary A rapidly scaling hardware startup is developing breakthrough manufacturing systems that enable high-performance composite structures to be produced at significantly faster speeds and lower cost. The team is expanding its automation capabilities to support high-volume production for critical applications across aerospace, defense, and energy. As the Lead Mechanical Automation Engineer, you will design and develop the mechanical systems that drive automated manufacturing. You will translate complex manual steps into scalable mechanical mechanisms, own CAD design and build packages, and work hands-on to prototype and validate new equipment. This position is ideal for someone who enjoys creating mechanisms from scratch, thrives in an iterative hardware environment, and wants to build advanced automation systems. About Us We are an emerging technology company focused on reinventing how advanced composite components are manufactured. Our proprietary process supports rapid production of intricate structures while maintaining high performance and consistency. The team operates in a fast-paced environment where mechanical design, automation, and manufacturing intersect daily, and where engineers have a direct impact on production technology used across multiple programs. Job Duties Mechanical Design and Prototyping • Lead CAD design for automated assemblies, fixtures, tooling, and mechanical subsystems, • Create complete mechanical build packages including drawings, GD&T, BOMs, and documentation, • Develop early prototype mechanisms that evolve into production ready systems, • Convert manual process steps into scalable mechanical automation concepts, • Integrate actuators, sensors, motion components, and electromechanical assemblies, • Support prototyping efforts by assembling, testing, and refining hardware, • Collaborate with manufacturing engineers and technicians to adapt processes for automation, • Develop equipment interfaces that prioritize usability, safety, and long term reliability, • Provide guidance during design, prototyping, and equipment builds, • Support long term automation planning and system architecture decisions, • Contribute to future equipment scaling strategies and capability development Qualifications • 3+ years designing mechanical systems for automated equipment or manufacturing environments, • Strong CAD proficiency with experience producing detailed assemblies and drawings, • Experience using GD&T, DFM, DFA, and high tolerance mechanical design practices, • Demonstrated ability to bring mechanical concepts through fabrication, assembly, and testing, • Hands on comfort with electromechanical hardware, wiring, sensors, and system debugging, • Ability to rapidly prototype low cost mechanical concepts that mature into production systems, • Strong communication and collaboration across mechanical, manufacturing, and controls teams, • Bachelor’s or Master’s degree in Mechanical Engineering or related discipline Preferred Experience • 5+ years in automation development or custom machinery design, • Background in composite manufacturing or equipment such as presses, ovens, or thermal systems, • Experience developing motion systems such as linear rails, actuators, or gantries, • Experience in aerospace, defense, or other high reliability manufacturing environments, • Exposure to integrating sensors, controls hardware, or robotics into mechanical designs Why Join Us • Build foundational automation and mechanical capabilities for a growing startup, • Work on end to end development: concept, design, prototype, and production, • Significant ownership and influence over future automation strategy, • Fast paced environment where ideas quickly turn into deployed hardware, • Stock options, • Paid time off, • Medical, dental, and vision benefits, • 401k with company match Compensation Details $140,000 - $220,000 #LI-AV

Job DescriptionDesign resilience for space systems operating in the harshest radiation environments! Job Title: Senior Radiation Effects Engineer Job Type: Full time; Consultant (12 Months) Location: Hybrid-2-3 days, El Segundo, CA Schedule: Monday to Friday; First shift 8AM- 5PM Pay Rate: 85.00 to 100.00 per hour PDS Tech Commercial is seeking an experienced Senior Radiation Effects Engineer to support our partnership with a leader in the aerospace industry. This is a highly technical, senior level consulting role focused on space survivability and radiation effects—an opportunity to contribute directly to the success, safety, and reliability of next generation satellite programs. If you bring deep expertise in radiation environments and thrive in collaborative, multidisciplinary engineering environments, this role puts you at the center of mission critical space system design. Role Summary In this role you will serve as a key technical contributor responsible for analyzing radiation effects, driving survivability strategies, and supporting design decisions across all satellite program phases. Your work will directly influence system reliability, performance, and compliance with government and environmental requirements. What You’ll Do * Serve as a subject matter expert in nuclear radiation hardness across multiple space programs * Interface with program offices and system engineering disciplines to ensure radiation requirements are fully incorporated into designs * Evaluate and address radiation related effects including total dose, displacement damage, ELDRS, single event effects, internal charging, IEMP, SGEMP, and TREE * Perform and document unit and vehicle level radiation analyses * Plan, coordinate, and execute radiation testing at piece part, unit, and vehicle levels * Partner with radiation test facilities nationwide, securing test time and representing program needs * Support design verification and compliance reviews through data analysis and technical reporting * Contribute technical expertise during all phases of satellite system development Required Qualifications 14+ years of experience in space environments and radiation effects * Extensive experience with radiation testing including: * Dose rate testing * Total ionizing dose (TID) testing * Displacement damage testing * Single event effects (SEE) testing * Experience conducting prompt dose analyses of electronic units * Experience supporting government programs with nuclear effects requirements * Bachelor’s degree with 14+ years’ experience OR (Master’s degree with 12+ years’ experience; PhD with 9+ years’ experience) This position requires use of information or access to facilities subject to the International Traffic in Arms Regulations (ITAR) and/or Export Administration Regulations (EAR). These regulations may limit access of controlled technologies: 1) to U.S. Persons, including U.S. Citizens, lawful permanent residents, and other narrow categories including refugees and asylees, or 2) to certain foreign nationals that have received an export license. Preferred Qualifications * Experience with oscilloscopes, network analyzers, spectrum analyzers, and other relevant test equipment Why Join Us At PDS Tech Commercial, you’ll be part of a team that values technical excellence, innovation, and professional growth. * The chance to contribute to high visibility space programs supporting national and global missions * A collaborative, engineering driven environment where your expertise has immediate impact * Opportunities to work alongside top talent in radiation effects, survivability engineering, and advanced space systems * Your contributions will directly influence the reliability and resilience of advanced space technologies—your expertise truly matters here. Ready to Support the Next Generation of Space Systems? If you are driven by technical challenge, precision, and innovation in the aerospace domain, we encourage you to apply today. Join PDS Tech Commercial and bring your specialized skills to a team shaping the future of space survivability. Pay Details: 85.00 to 100.00 per hour Benefit offerings available for our associates include medical, dental, vision, life insurance, short-term disability, additional voluntary benefits, EAP program, commuter benefits and a 401K plan. Our benefit offerings provide employees the flexibility to choose the type of coverage that meets their individual needs. In addition, our associates may be eligible for paid leave including Paid Sick Leave or any other paid leave required by Federal, State, or local law, as well as Holiday pay where applicable. Equal Opportunity Employer/Veterans/Disabled Military connected talent encouraged to apply To read our Candidate Privacy Information Statement, which explains how we will use your information, please navigate to The Company will consider qualified applicants with arrest and conviction records in accordance with federal, state, and local laws and/or security clearance requirements, including, as applicable: • The California Fair Chance Act, • Los Angeles City Fair Chance Ordinance, • Los Angeles County Fair Chance Ordinance for Employers, • San Francisco Fair Chance Ordinance Massachusetts Candidates Only: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Job Description Claros is a power management solutions company that is innovating at the intersection of power and compute to make AI more sustainable and widely available. By driving down the cost and complexity of power delivery and leveraging innovative hardware and software, the company seeks to decrease energy consumption, optimize power delivery, increase compute performance, and maximize the efficiency of AI operations. Test Systems Engineer Location: Minimum of 3 days a week in the office in Torrance, CA. (Hybrid role) This role will report to: Director of Test and Operations About Claros Claros enables Grid-to-Chip power infrastructure solutions for next generation Data Centers. Our mission is to transform power management to meet the global energy demand created by big data, artificial intelligence and ML. Through our innovative power delivery platform, our technology helps next generation data centers implement and operate server platforms that identify, control, and optimize power and energy management systems to meet real-world end user demands. We serve government and commercial customers. About The Team We are open-minded, fast paced, problem solvers that value open dialogue and candor. Our passion is to challenge the status-quo and we embrace transformational thinking. Our response is never "no, but…." instead "yes, if….". We are mindful of our personal and organizational blinders and try to build an environment where our team members are At Their Best. About The Role Claros Technologies is seeking a highly skilled, self-motivated Test System Engineer to help drive the development of next-generation power delivery and semiconductor technologies. In this role, you'll design and implement automated test systems, custom PCBs, and evaluation hardware to validate cutting-edge integrated voltage regulators and high-power demonstrators. You'll work hands-on in the lab and collaborate across design, packaging, and system teams to ensure accurate, data-driven performance validation from silicon to full system integration. This is an exciting opportunity for an engineer who thrives on innovation, precision, and solving complex system challenges in a fast-moving R&D environment. What You Will Do • Test System Architecture & Development, • Define and develop test system architecturefor validating power conversion ICs, modules, and subsystems., • Integrate hardware and software components—bench instruments, DAQs, power analyzers, load systems, and thermal sensors—into unified automated setups., • Design custom interface boards, test fixtures, and harnesses to support automated validation and reliability testing., • Establish robust test methodologies for efficiency, thermal, and transient performance characterization., • Develop scalable test infrastructurefor prototype and production-intent platforms., • Hardware Design & PCB Development, • Design evaluation and control PCBsfor IVR, converter, and power module testing., • Implement features for telemetry, fault monitoring, and safety interlocks., • Ensure PCB designs comply with DFT (Design for Test) and DFM (Design for Manufacturing) guidelines., • Work with external vendors for fabrication and assembly, and lead bring-up/debug of evaluation hardware., • Test Automation & Data Systems, • Develop and maintain automated test scripts using Python, LabVIEW, or MATLABto control instruments and log data., • Create test frameworks to manage multiple devices and complex test sequences., • Automate post-processing, data visualization, and report generation., • Support calibration, traceability, and repeatability across test systems., • System Integration & Validation, • Collaborate with silicon, packaging, and system teams to define interface, telemetry, and control requirements., • Validate system performance—including electrical, thermal, and control loop stability—against specifications., • Contribute to reliability and environmental test plans (thermal cycling, load transients, and power-on stress)., • Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, or related discipline., • 4–8 years of experience developing automated test systems for semiconductors, power electronics, or mixed-signal ICs., • Hands-on experience with bench instrumentation, automated test software, and PCB design., • Proficiency in test scripting(Python, LabVIEW, C/C++, or MATLAB)., • Knowledge of power conversion, analog/digital circuits, and embedded control., • Familiarity with data acquisition, communication protocols (I²C, SPI, PMBus, CAN, etc.), and control loop analysis., • Career track opportunity with potential for rapid advancement with strong performance as the firm grows, • 100% employer paid, comprehensive health care including medical, dental, and vision for you and your family., • Paid maternity and paternity for 14 weeks at employees' normal pay., • Unlimited PTO, with management approval., • Opportunities for professional development and continued learning. Our Red Cell Partners Benefits: • Career track opportunity with potential for rapid advancement with strong performance as the firm grows, • 100% employer paid, comprehensive health care including medical, dental, and vision for you and your family., • Paid maternity and paternity for 14 weeks at employees' normal pay., • Unlimited PTO, with management approval., • Opportunities for professional development and continued learning. By submitting an application, you acknowledge that Red Cell Partners, LLC ("Red Cell") uses third-party service providers to facilitate its recruitment and hiring processes. These providers include applicant tracking systems, candidate verification platforms, and fraud detection tools (collectively, "Hiring Platforms"). Your application materials, including your résumé, cover letter, work samples, responses to application questions, and any other information you submit, may be transmitted to and processed by these Hiring Platforms for the following purposes: • Managing and administering your application throughout the hiring process;, • Verifying the accuracy and authenticity of application materials, including by cross-referencing information you provide against publicly available sources and proprietary databases; Red Cell requires its Hiring Platform providers to process your information solely for the purposes described above and in accordance with applicable law. Your information will be retained only for as long as necessary to fulfill these purposes and any applicable legal obligations, after which it will be deleted in accordance with Red Cell's data retention policies. For more information about how your data is used, please refer to our Privacy Policy and Applicant Privacy Notice.

Job Description Reactor Operations Engineer We are seeking a Reactor Operations Engineer to design and implement mission-critical procedures for reactor operators managing our groundbreaking nuclear microreactor technology. This role offers a rare opportunity to bridge engineering, operations, and human factors in a highly technical and regulated environment. You will collaborate with a multidisciplinary team to translate complex hardware and software designs into clear, executable, and DOE or NRC compliant procedures. Your work will ensure that Reactor Operators (ROs) and Senior Reactor Operators (SROs) can efficiently and safely execute test, commissioning, and operational activities. This position goes beyond traditional systems engineering—you will also gain hands-on experience as a Reactor Operator (RO), directly influencing the development of operational software, procedures, and digital twin simulations. Your contributions will enhance operator efficiency, safety, and real-world execution of our cutting-edge microreactors. Responsibilities and Duties: * Develop and refine operational procedures that integrate both software and hardware-in-the-loop testing. * Collaborate closely with engineers to improve operator interfaces, procedural workflows, and software tools. * Qualify as an operator to gain firsthand experience, ensuring procedures align with real-world execution. * Support testing and iterative improvements of digital twin scenarios, operator systems, and human-machine interfaces. * Ensure compliance with DOE and NRC standards, maintaining strict formatting, clarity, and usability in procedural documentation. Required Skills and Qualifications: * Undergraduate degree in engineering discipline. * 2+ years of full-time professional experience in engineering problem-solving, including system design, analysis, or testing. * Proficiency in managing or optimizing complex hardware and software processes for testing and operations. * Ability to apply first principles thinking to solve problems and make decisions in uncertain or ambiguous situations. Desired Skills and Qualifications: * Prior experience working as an operator in nuclear environments (e.g., nuclear energy, naval reactors, or radiation-controlled facilities), with familiarity in safety protocols, regulatory compliance, and high-reliability operations * Hands-on experience in developing technical procedures, human factors engineering, or operational interface design. * Prior operations background such as mission control room operator. * Background in highly regulated industries (e.g., nuclear, aerospace, aviation, maritime). * Proficiency in Python, UNIX, for procedure testing within the simulator environments. * Experience with human factors and user-centered instructions for operational workflows. Additional Requirements: * Must be willing to work extended hours and weekends as necessary to achieve company goals. * Must work 100% onsite at El Segundo HQ. Benefits and Perks * Stock: Substantial incentive stock plan for all full-time employees. * Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans. * One Medical: Sponsored memberships for employees and their dependents. * Vision: 100% top tier plan coverage + 50% for dependents. * Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents. * Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits. * 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees. * Daily catered lunch. Free snacks and drinks. * Flexible PTO policy. Remote workday allocation. * Company and team-bonding events, happy hours and in-person camaraderie. * Beautiful El Segundo headquarters close to the Pacific Ocean. Total Compensation and Benefits Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant. The best of today’s advanced reactor builders don’t wait for job postings. They join the winning team. If that’s you, contact us directly for immediate opportunities: . We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law. Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. Compensation Range: $119,000 - $146,475

Job DescriptionAbout the role Radiant is seeking a Principal FPGA Engineer to serve as the technical authority for FPGA development across our Embedded Systems team. You will define the architecture, methodology, and standards governing FPGA design for a safety-critical instrumentation and control system responsible for real-time reactor control, sensor and actuator handling, and communications. This role operates at the intersection of deep technical ownership and organizational influence, shaping how Radiant approaches FPGA development as we bring the first commercial microreactor to market. Responsibilities and Duties: * Define and own the overall FPGA architecture strategy across Radiant's instrumentation and control systems, ensuring designs scale with evolving product and regulatory requirements. * Establish org-wide FPGA development standards, toolchain selections, and verification methodologies. * Drive the most complex technical challenges — timing closure at scale, fault-tolerant design, multi-domain clock architectures — and set the precedent for how they are solved. * Serve as the primary technical interface across Embedded Systems, hardware, software, and systems engineering, ensuring cohesive system-level design decisions. * Lead architecture and design reviews, setting the quality bar for RTL, simulation, synthesis, and validation deliverables. * Partner with engineering leadership to define hiring criteria and inform technical roadmap decisions. * Mentor senior and mid-level FPGA engineers, building long-term technical depth across the organization. Required Skills and Qualifications: * Bachelor's degree in computer engineering, electrical engineering, or related field; advanced degree preferred. * 10+ years of progressive FPGA development experience with demonstrated impact at a principal or staff engineer level. * Expert-level proficiency in VHDL, SystemVerilog, or equivalent HDL, with a track record of setting team-wide design standards. * Mastery of full-cycle FPGA development — RTL architecture, simulation, synthesis, timing closure, and hardware bring-up — across multiple platform generations. * Deep experience with multi-clock domain design, fault-tolerant architectures, and safety-critical systems. Desired Skills and Qualifications: * Experience in regulated development environments, including aerospace, defense, and manufacturing. * Experience with the Microchip PolarFire SoC platform or comparable ecosystems. * Proficiency with embedded C/C++ in FPGA/SoC contexts. * Experience with formal or coverage-driven verification methodologies at scale. * Familiarity with CI/CD pipelines applied to HDL workflows. Benefits and Perks * Stock: Substantial incentive stock plan for all full-time employees. * Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans. * One Medical: Sponsored memberships for employees and their dependents. * Vision: 100% top tier plan coverage + 50% for dependents. * Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents. * Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits. * 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees. * Daily catered lunch. Free snacks and drinks. * Flexible PTO policy. Remote workday allocation. * Company and team-bonding events, happy hours and in-person camaraderie. * Beautiful El Segundo headquarters close to the Pacific Ocean. Total Compensation and Benefits Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant. The best of today’s advanced reactor builders don’t wait for job postings. They join the winning team. If that’s you, contact us directly for immediate opportunities: . We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law. Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. Compensation Range: $200.5K - $265.5K

Job Description Broadata Communications, Inc. (BCI) is a privately held California-based corporation. BCI is a leading and innovative company specializing in the development of market-driven products for the transmission of digital multimedia (video, audio, and data) over fiber. Our clients are world leaders in their industries, spanning entertainment, broadcast, medical, professional audio/video, house of worship, education, government, military, and transportation sectors. We are ISO 13485 and ISO 9001 certified, with a strong commitment to quality, innovation, and continuous improvement. We are seeking a detail-oriented, Video Test Engineer. This role focuses on performing integration testing, validation and verification of new and existing products, while developing and maintaining the company’s processes, specifications, and procedures for product development, troubleshooting, and testing. This is a hands-on role in Product Development and Engineering, based in Torrance, CA, and is not a remote or hybrid position. We offer a fast-paced, high impact and stimulating environment with opportunities for professional growth within BCI. Veterans welcome! BASIC JOB RESPONSIBILITIES: • Develop verification, validation, troubleshooting, and testing for the release and maintenance of BCI and third-party hardware, firmware and software used in high-performance digital multimedia products., • Design, develop and execute product and system test plans to create formal validation and verification, documentation, methods, and processes, design and build fixtures, automated test jigs, scripts, and demo and test systems., • Develop and perform formal validation and verification testing, including interoperability, safety, environmental, accelerated life cycle testing, pursuant to compliance certification to 60601., • Document and analyze test results, including product hardware, firmware, & software verification and validation, using both manual and automated testing as needed., • Conduct product failure resolution by analyzing failure reports, devising, and executing experiments to reproduce one or more failure modes, and systematically localizing root cause(s)., • Generate and review accurate and thorough technical content, including software/firmware requirements, design specifications, and test protocols., • Generate internal and external documentation such as datasheets, user manuals, test methods and processes, etc., • Contribute input to schedules and task breakdowns., • Contribute to organization of common and dedicated lab work benches, storage, mechanical tools, 3D printers, and electronics tools and supplies.Job responsibilities within our organization are dynamic. This may not be a complete list of duties. Other responsibilities and duties may be assigned by your supervisor or upper management. EDUCATION, EXPERIENCE, & KNOWLEDGE: • B.S. in Electrical Engineering or a related field., • 3+ years of experience designing and/or testing of multimedia hardware and systems., • Basic electrical circuit and mechanical design knowledge sufficient for design of test fixtures including basic wiring and computer interfacing., • Experience executing test plans to create formal validation and verification documentation for multimedia hardware, firmware & software products., • Hands-on, demonstrable experience and working knowledge of most or all of the following:, • Experience with printed circuit board assembly and testing, cable harness production, and ESD control., • Multimedia test equipment such as Quantum Data, Audio Precision, PHABRIX, • Standard lab equipment such as oscilloscopes, logic analyzers, signal analyzers, signal generators, spectrum analyzers, etc., • Basic Python to understand and modify complex scripts and write simple scripts, • Experience with bug scrubbing, bug tracking, and bug tracking software, • Building test units, harnesses, and jigs using mechanical and electronic assembly, • Multidisciplinary bring-up and debugging techniques and approaches, • PC (Windows/Linux) and Ethernet network/ IP network setup and configuration, • High speed video interfaces and protocols (composite to 4K60, HDMI/DP/DVI, SDI, SDVOE, streaming, color spaces, standards and temperatures, and timing & synchronization)SKILLS, ABILITIES, & ATTRIBUTES:, • Solid Electrical Engineering background with the ability to read, understand, create, and edit multimedia PCB schematics, familiarity with basic FPGA/SoC/processors, memory systems, power subsystems including linear and switching topologies, and serial interfaces., • Strong team player who can work collaboratively with a diverse team to identify root cause of complex system problems, for both internally reported failures as well as customer RMAs, using Ishikawa/fishbone analysis to find effective, practical solutions quickly., • Detail-oriented effective communicator with excellent customer-ready documentation and communication skills and ability to develop, use, and socialize document templates to streamline processes., • Ability to provide completion time estimates for a given set of test requirements., • Ability to be hands-on with soldering, assembly, and testing., • Ability to work with very little supervision, prioritize between multiple tasks, meet aggressive deadlines, and work extended hours (as needed)., • Highly responsible and committed to thrive in an energetic, fast-paced, evolving, high growth environment while adhering to aggressive deadlines, and coordinating cross-functional teams., • Strong self-motivation and attitude for personal career growth, willingness to self-learn, and work in new technology domains.BENEFITS:, • Medical, vision and dental insurance, • 401(k) with company match (100% of the first 4% in eligible compensation), • Flexible Spending Account, • 2 weeks paid vacation, • 1 week sick pay, • 10 company holidays, • Group Life InsurancePAY RANGE:, • $80,000 - $120,000 annual base salaryPay may vary depending on experience, qualifications, and other job-related factors. 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Job Description Role Overview Radiant is seeking a Loads & Dynamics Engineer to own and execute structural loads, vibration, and dynamic analyses for complex mechanical systems associated for Kaleidos, the worlds first portable microreactor and supporting hardware. You will play a critical role in ensuring structural integrity and survivability across all phases of the product lifecycle, including manufacturing, transportation, handling, deployment, and operational environments. This role requires a hands-on engineer who is comfortable working in ambiguous, fast-paced environments and collaborating closely with structures, mechanical design, thermal, nuclear, and test teams. Responsibilities * Develop and own static, dynamic, and transient loads for reactor systems, support structures, and transport configurations * Perform structural dynamics analyses, including modal, random vibration, shock, sine vibration, and fatigue assessments * Implement explicit dynamics simulations to model nonlinear reactor response under transient seismic and transportation event cases * Define and analyze transportation and handling environments, including shock and vibration from road, rail, air, or sea transport * Generate load cases and environments to support structural sizing, design margins, and verification plans * Conduct finite element analyses (FEA) using tools such as ANSYS, Abaqus, or similar tools * Collaborate with design engineers to influence hardware architecture, material selection, and joint design * Support test planning and correlation, including shaker tests, modal surveys, and structural verification testing * Develop and maintain analysis documentation, reports, and requirements for internal reviews and regulatory interfaces * Contribute to failure investigations, root cause analyses, and design improvements * Help establish best practices for loads, dynamics, and structural verification within a growing engineering organization Required Qualifications * Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, Structural Engineering, or a related field * 3+ years of experience in loads, dynamics, or structural analysis for complex mechanical systems * Strong fundamentals in structural mechanics, dynamics, and vibration * Experience with finite element modeling and analysis of metallic and composite structures * Proficiency with industry-standard FEA tools (e.g., ANSYS, Abaqus, Nastran) * Familiarity with design allowables, safety factors, and margin-of-safety methodologies * Ability to work cross-functionally and communicate analysis results clearly to both technical and non-technical stakeholders Preferred Qualifications * Experience in aerospace, launch, defense, nuclear, or heavy industrial hardware environments * Dynamics modeling software experience (LD-Dyna, Abaqus explicit, or other) * Background in shock and vibration testing and test-article correlation * Knowledge of fatigue, fracture mechanics, and bolted joint analysis * Experience defining or interpreting environmental specifications and requirements * Master’s degree or PhD in a relevant engineering discipline * Familiarity with nuclear, spaceflight, or safety-critical system requirements Benefits and Perks * Stock: Substantial incentive stock plan for all full-time employees. * Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans. * One Medical: Sponsored memberships for employees and their dependents. * Vision: 100% top tier plan coverage + 50% for dependents. * Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents. * Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits. * 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees. * Daily catered lunch. Free snacks and drinks. * Flexible PTO policy. Remote workday allocation. * Company and team-bonding events, happy hours and in-person camaraderie. * Beautiful El Segundo headquarters close to the Pacific Ocean. Total Compensation and Benefits Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant. The best of today’s advanced reactor builders don’t wait for job postings. They join the winning team. If that’s you, contact us directly for immediate opportunities: . We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law. Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. Compensation Range: $106,500 - $146,475

Job DescriptionSalary: $125,000 to $180,000 depending on experience Job Description Quantum Space is redefining mobility and autonomy beyond Earth orbit. Our Ranger spacecraft deliver high delta-V and sustained on-orbit maneuverability, enabling missions across cislunar and geostationary space that were previously out of reach. We are building the vehicles, infrastructure, and operational expertise that connect and protect assets across the EarthMoon system. Who Were Looking For Quantum Space is seeking a Senior Test Engineer focused on Ground Support Equipment (GSE) and vacuum test systems to enable in-house development and validation of electric propulsion (EP) technologies. This role is built for an engineer who can design and build test infrastructure and operate it, someone equally comfortable developing GSE, working hands-on in a vacuum chamber, and running propulsion test campaigns.You will play a critical role in establishing and scaling our internal EP test capability. Where Youll Make an Impact • Design and develop GSE and test infrastructure for electric propulsion systems (thrusters, feed systems, support equipment), • Own vacuum chamber test setups: integration, configuration, and operation for EP testing, • Define test system requirements including vacuum performance, thermal constraints, instrumentation, and safety systems, • Lead build, integration, and commissioning of propulsion test setups, • Develop and execute EP test campaigns: setup, operation, data collection, and troubleshooting, • Operate and maintain vacuum systems: pumps (turbo, cryo, roughing), valves, gauges, and support equipment, • Troubleshoot vacuum performance issues including leaks, contamination, and system instability, • Design and implement instrumentation and data acquisition systems for propulsion testing, • Develop test procedures, safety documentation, and operational workflows, • Collaborate with propulsion, mechanical, electrical, and AI&T teams to ensure test readiness and data quality What It Takes • BS or MS in Mechanical Engineering, Aerospace Engineering, or related technical field, • 510+ years of experience with test systems, GSE, or propulsion testing, • Strong experience designing and building test equipment (not just operating it), • Hands-on experience with vacuum systems and vacuum chamber operations, • Experience supporting or running test campaigns (setup execution troubleshooting), • Strong understanding of mechanical systems, fluid systems, and controls, • Proven ability to troubleshoot complex system-level issues in a test environment, • Comfortable working hands-on in lab/test settings, • Work location within the LA area Nice-to-Have Experience • Direct experience with electric propulsion, • Experience with thermal vacuum or propulsion vacuum testing, • Familiarity with LabVIEW, PLCs, or custom data acquisition systems, • Experience with high-voltage systems associated with EP testing, • Experience with gas delivery systems, • Familiarity with contamination control and vacuum materials compatibility What Youll Get • Ownership Build and operate in-house propulsion test capability, • Impact Direct contribution to core spacecraft propulsion technology, • Growth Path to test architecture or propulsion test leadership, • Compensation Competitive salary, equity, and comprehensive benefits Additional Requirements To comply with U.S. Government space technology export regulations, including ITAR, applicants must be a U.S. citizen, lawful permanent resident, protected individual per 8 U.S.C. 1324b(a)(3), or eligible to obtain required authorizations.

Job Description About Castelion Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. We're designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts. Senior System Safety Engineer As a Senior System Safety Engineer, you will lead a tailored, risk-informed System Safety Program across Castelion weapon systems. You will ensure hazards are identified early, risks are clearly understood, and safety is intelligently integrated into system design, development, test, and operations—without unnecessary process or paperwork. This role emphasizes responsible engineering judgment, rapid iteration, and practical risk reduction, while remaining aligned with the intent, rigor, and accountability principles of MIL-STD-882E and applicable DoD safety expectations. You will work closely with propulsion, avionics, GNC, software, flight test, manufacturing, and mission integration teams to embed safety directly into engineering decisions. You will also serve as the primary safety authority interfacing with government customers and safety review boards throughout the program lifecycle. Castelion's approach to system safety is grounded in responsible engineering: hazards are systematically identified, risks are clearly documented, mitigations are technically justified, and risk acceptance decisions are explicit, traceable, and made at the appropriate level of authority. Responsibilities • Define, implement, and continuously improve a tailored System Safety Program aligned with the intent of MIL-STD-882E, scaled appropriately for rapid development, prototyping, and test., • Apply system safety engineering principles pragmatically to identify, analyze, and mitigate hazards across weapon systems and supporting infrastructure., • Lead system and software safety analyses as appropriate to program phase and risk, including:, • Functional Hazard Analysis (FHA), • Preliminary Hazard Analysis (PHA), • System and Subsystem Hazard Analysis (SHA / SSHA), • Safety Requirements Hazard Analysis (SRHA), • Fault Tree Analysis (FTA), • Software Safety Analysis, • Prioritize safety effort using risk-based decision making, focusing analysis depth where it provides the most value rather than applying uniform process., • Define safety requirements and ensure clear traceability from hazard identification through mitigation implementation, verification, and closure., • Maintain concise, decision-oriented hazard tracking and risk documentation that supports engineering trade studies and timely risk acceptance., • Provide embedded safety engineering support to system design trades, test planning, operational procedures, and hardware/software utilization., • Represent system safety at:, • System Safety Working Groups (SSWG), • Integrated Product Teams (IPTs), • Design Reviews (SRR, PDR, CDR), • Test Readiness Reviews (TRR), • Safety Review Boards and customer technical reviews, • Support ground test, live-fire, and flight test operations through targeted pre-test hazard analysis, real-time safety support, and post-test risk assessment., • Develop and present lean, technically rigorous safety cases and Safety Assessment Reports (SARs) to internal leadership and government stakeholders., • Continuously refine safety processes, tools, and templates to improve clarity, speed, and engineering impact., • Bachelors degree in science, engineering, or software discipline with 8+ years of relevant or safety-related experience OR Masters degree in science, engineering, or software discipline with 5+ years of relevant or safety-related experience, • Demonstrated experience applying MIL-STD-882E in a tailored, risk-informed manner, • Experience performing system and software safety analyses for weapon systems or aerospace platforms, • Ability to independently assess, quantify, and clearly communicate technical safety risk, • Experience supporting design, development, integration, test, and verification of military systems, • Strong written and verbal communication skills, including briefing senior technical leaders and government stakeholders, • Experience with:, • Missile systems, hypersonic weapons, or advanced strike systems, • Flight test or live-fire test safety, • Complex embedded software or autonomy-enabled systems, • Proven experience presenting safety cases to high-level safety review boards, • Active Top-Secret clearance, • Strong understanding of DoD acquisition, certification, and operational safety environments Leadership Qualities Bias to Action and Creative Problem Solving. Desire and experience questioning assumptions in ways that lead to break through ideas that are ultimately implemented. Successfully bring in applicable processes/concepts/materials from other industries to achieve efficiency gains. Ability to personally resolve minor issues in development without requiring significant support. High Commitment, High Initiative. A successful candidate will have a genuine passion for Castelion's mission and consistently look for ways to contribute to the company's technical goals and prevent hardware blockers. Ability to work in a fast paced, autonomously driven, and demanding atmosphere. Strong sense of accountability and integrity. Clear Communicator. Proactively communicates blockers. Trusted in previous roles to be voice of company with regulators, suppliers, gate keepers and customers. Capable of tactfully managing relationships with stakeholders to achieve company-desired outcomes without compromising relationships. Emails, IMs and verbal interactions are logical, drive clarity, and detailed enough to eliminate ambiguity. ITAR Requirements:

Job Description Senior Structures Engineer Radiant is seeking a highly motivated Senior Structures Engineer to design and develop critical structures within Kaleidos. You will solve unique challenges creating efficient and reliable structures that facilitate fission while surviving extreme temperature environments and meeting volumetric constraints. You will be responsible for the following: trade studies, material selection, detailed structural analysis, assembly, integration, and testing. You will have an instrumental impact of fueling the first new commercial reactor design in over 50 years by 2026. Responsibilities & Duties: * Ownership of critical structures such as mass-efficient transportable shielding systems, container system, and high temperature graphite and metallic systems. * Conduct trade studies and develop designs to meet program requirements. * Perform detailed thermomechanical analysis (static strength, durability/fatigue) and dynamic analysis (vibration, shock) to determine structural integrity (margins of safety) using both hand calculations and finite element tools. * Develop and execute manufacturing/assembly instructions and test plans. * Create and manage a Bill-Of-Materials (BOM). * Find and develop suppliers for components. * Own subassembly design, manufacturing, and test schedules. * Own risk analysis (FMEA) for subsystems. * Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication. Required Qualifications & Skills: * Bachelor’s degree from an accredited institution in Mechanical, Aeronautical, Civil or Structural Engineering. * 6+ years of experience designing structures. * 4+ years of experience performing stress analysis using both hand calculations and finite element tools (Abaqus, Ansys, FEMAP, or similar). Desired Qualifications & Skills: * Experience with design of multi-component assemblies in CAD (NX or similar). * Experience designing hardware that was manufactured, deployed, and iteratively improved. * Experience resolving thermal expansion issues in designs. * Experience working with interdisciplinary teams. * Solid understanding and application of GD&T. * Proficiency with both “hand calc” analytical methods and higher fidelity finite element-based analysis methods. * Ability to derive free-body diagrams for systems with which one was not previously familiar. * Self-motivated with strong organizational, written, and oral communication skills. * Experience with using text-based software development tools. Additional Requirements * Must be willing to work extended hours and weekends as necessary to accomplish our mission. * Must work 100% onsite at El Segundo HQ. Benefits and Perks * Stock: Substantial incentive stock plan for all full-time employees. * Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans. * One Medical: Sponsored memberships for employees and their dependents. * Vision: 100% top tier plan coverage + 50% for dependents. * Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents. * Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits. * 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees. * Daily catered lunch. Free snacks and drinks. * Flexible PTO policy. Remote workday allocation. * Company and team-bonding events, happy hours and in-person camaraderie. * Beautiful El Segundo headquarters close to the Pacific Ocean. Total Compensation and Benefits Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant. The best of today’s advanced reactor builders don’t wait for job postings. They join the winning team. If that’s you, contact us directly for immediate opportunities: . We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law. Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. Compensation Range: $133.5K - $207.9K

Job DescriptionDescriptionThe Development Test Engineer at Impulse, will lead the planning, execution, and analysis of tests critical to validating next-generation in-space mobility systems. This role is highly cross-functional, interfacing with design, analysis, manufacturing, and operations teams to ensure products meet performance, safety, and reliability requirements. The ideal candidate combines strong engineering fundamentals with hands-on test experience in a fast-paced development environment. This position plays a key role in maturing early-stage designs into flight-ready hardware. Responsibilities • Design, build, and commission test fixtures for fluid, cryogenic, high-pressure, cyclic, environmental, mechanical, and structural testing, • Execute tests safely and efficiently, including setup, operations, and troubleshooting during live test events, • Strong problem-solving and troubleshooting capabilities, • Work closely with design and manufacturing teams to ensure testability and rapid feedback cycles, • Excellent technical writing and documentation skills Minimum Qualifications • Bachelor’s degree in Mechanical, Aerospace, Electrical, or related engineering discipline, • A demonstrated understanding of mechanical, propulsion, fluid, or structural systems, • Strong data analysis skills using tools such as Python, MATLAB, or similar, • Hands-on experience with hardware in a laboratory or test-stand environment, • Ability to manage multiple test campaigns in a fast-paced environment Preferred Skills and Experience • Experience testing aerospace or spaceflight hardware (propulsion systems, structures, mechanisms, avionics), • Familiarity with high-pressure fluid systems, cryogenic systems, or hazardous test operations, • Proficiency with instrumentation, DAQ systems, and sensor selection/integration, • Demonstrated ability to develop test plans, execute complex tests, and document results, • Background in designing and automating test setups with NI, LabVIEW, PLCs, or similar platforms, • Ability to interpret engineering drawings, FEA/CFD results, and system requirements, • Prior involvement in fast-paced R&D or startup environments with rapid iteration cyclesAdditional Requirements: Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options, and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan. To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here. Impulse Space is an Equal Opportunity Employer; employment with Impulse Space is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

Job Description A New Paradigm For Space Operations. Who We Are:Space Kinetic is a cleared, venture-backed startup focused on addressing urgent national security priorities. Our goal is to deliver a suite of asymmetric capabilities for space superiority and missile defense leveraging our proprietary electromechanical deployment system, which enables the rapid deployment of low-cost payloads through space without firing a thruster. Space Kinetic is currently assembling its TRL-5 prototype. Our goal is to leverage this platform to provide the United States with a new tool for securing the space domain & catalyzing the emerging space economy. What You'll Do: The Chief Systems Engineer at Space Kinetic will be a highly experienced and visionary engineering professional with extensive experience in successfully leading complex space programs from concept to mission operations and have demonstrated technical excellence in space system mission design and supporting development of space hardware from System Concept, System Requirements to Technology Readiness Level 9. This is a critical leadership role responsible for providing critical mission planning, requirements definition, technical oversight and supporting all engineering and programmatic functions within the company in a fast-paced start-up agile environment. The Chief Systems Engineer will develop and execute the overall payload mission, engineering, and production requirements in line with the company's goals and objectives. Core Responsibilities: 1. Overall Technical Authority • Leads the space system's architecture and major design decisions, • Balances performance, SWaP-C (Size, Weight, Power and Cost), and risk, • Signs off on design maturity and readiness at every review (PDR, CDR, TRR, etc.) 2. Systems Engineering Leadership • Ensures all subsystems (GNC, power, comms, propulsion, structures, thermal, avionics, software, payload, etc.) integrate correctly, • Owns system requirements: flow-down, allocation, verification, validation 3. Mission Performance & Safety • Ensures the Space Kinetic system meets mission performance (pointing, power budget, data throughput, lifetime, survivability), • Oversee environmental qualification (vibration, shock, TVAC, EMI, radiation considerations) What It Takes: • B.S. in Aerospace Engineering, Mechanical or Electrical Engineering, Computer Science, or related field, • 7+ years of experience in leadership positions of satellite systems development, integration, and operation., • Ability and willingness to obtain a security clearance, • Master's degree or PhD in Aerospace Engineering, Mechanical or Electrical Engineering, Computer Science, Systems Engineering, or a related field., • Ability to work in a fast paced, autonomously driven, and demanding startup atmosphere, • Equity-Based Compensation, • Highly Competitive PTO and Holiday Calendar, • Comprehensive Medical, Dental, and Vision Coverage, • Unique Performance-Based Bonus Structure, • Health and Wellness Stipend Equal Employment Opportunity: Space Kinetic provides equal employment opportunities to all employees and applicants without regard to race, color, religion, age, sex, gender identity, sexual orientation, national origin, veteran status, disability or any other legally protected status. The annual base salary for this role is below. Pay Grades are determined by role, level, location, and alignment with market data. Individual pay will be determined on a case-by-case basis and may vary based on the following considerations: interviews and an assessment of several factors that are unique to each candidate, job-related skills, relevant education/experience, certifications, abilities of the candidate and internal equity. Pay Range$150,000—$230,000 USD

Job Description About Castelion Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. We're designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts. Position Overview We are seeking a Lead Integration & Test Engineer with deep expertise in the integration and verification of warhead systems into complete hypersonic missile vehicles. This role focuses on leading the safe and reliable integration of warheads (including energetics, fuzing, safe-and-arm devices, and structural interfaces) with missile airframes, radars, propulsion, avionics, and thermal protection systems. You will own end-to-end integration & test strategies from subassembly through full vehicle level, supporting ground qualification, environmental testing, and flight test campaigns for next-generation hypersonic strike weapons. You will serve as the technical authority on warhead-vehicle integration and test, collaborating closely with design, manufacturing, propulsion, radar, quality, and mission assurance teams to meet stringent DoD standards and mission requirements. Key Outcomes for 2026 • Deliver a production ready integration & test process in Rio Rancho New Mexico, • Develop a plan to scale from low-rate initial production to full volume production supporting thousands of units per year, • Support a rapid test flight cadence to validate vehicle capability, • Develop safe integration and testing processes for the vehicle that ensure operator safety, • Lead warhead-to-vehicle integration activities including mechanical mating, electrical interface verification, fuze/S&A installation, and safe separation testing., • Develop and execute comprehensive vehicle-level Integration & Test plans covering functional checkout, ordnance arming sequences, environmental qualification, and system verification., • Design and commission integration tooling, test fixtures, and automated test equipment for warhead handling and full missile assembly., • Oversee environmental stress screening (thermal, vibration, shock, EMI/EMC) and functional performance testing of integrated warhead-vehicle systems., • Support flight test preparation, range coordination, pre-flight checkout, and post-flight data analysis and anomaly resolution., • Perform root-cause investigations and corrective actions for integration and test anomalies using FRACAS and fault tree analysis., • Ensure full compliance with explosive safety standards, DoD 6055.09, MIL-STD-810, and mission assurance requirements., • Mentor integration & test engineers and lead cross-functional I&T teams during build and test campaigns. Education: • 8+ years in integration and test for complex aerospace or defense systems., • 4+ years specifically working with warheads, munitions, or energetic systems integration., • Strong experience with ordnance handling, safe-and-arm devices, and energetic materials integration., • Proficiency in test automation (LabVIEW, Python, MATLAB), data acquisition systems, and telemetry., • Hands-on with environmental testing and ordnance functional verification., • Requirements management and configuration control., • Direct experience on DoD missile or hypersonic warhead programs., • Background in fast-paced development environments, • Knowledge of insensitive munitions and advanced warhead designs., • Prior flight test support at ranges, • Proven ability to lead technical teams in high-stakes, safety-critical environments., • Excellent communication and presentation skills for executive and customer briefings. Bias to Action and Creative Problem Solving. Desire and experience questioning assumptions in ways that lead to break through ideas that are ultimately implemented. Successfully bring in applicable processes/concepts/materials from other industries to achieve efficiency gains. Ability to personally resolve minor issues in development without requiring significant support. High Commitment, High Initiative. A successful candidate will have a genuine passion for Castelion's mission and consistently look for ways to contribute to the company's technical goals and prevent hardware blockers. Ability to work in a fast paced, autonomously driven, and demanding atmosphere. Strong sense of accountability and integrity. Clear Communicator. Proactively communicates blockers. Trusted in previous roles to be voice of company with regulators, suppliers, gate keepers and customers. Capable of tactfully managing relationships with stakeholders to achieve company-desired outcomes without compromising relationships. Emails, IMs and verbal interactions are logical, drive clarity, and detailed enough to eliminate ambiguity. ITAR Requirements All employees are granted long-term stock incentives as part of their employment at Castelion. All employees receive access to comprehensive medical, vision, and dental insurance, and the company offers four weeks of paid time off per year.

Job DescriptionAbout Radiant Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant’s unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor at the Idaho National Laboratory this summer, with initial customer deliveries beginning in 2028. Senior FPGA Verification Engineer – 6 Month Contract Radiant is seeking a Senior FPGA Verification Engineer to contract with our Embedded Systems team. You will be responsible for leading the verification of FPGAs used in the reactor instrumentation and control system — covering safety-critical applications, sensor and actuator handling, and communication systems. This role requires close collaboration with hardware engineers, embedded software engineers, and test engineers in a cross-functional setting to ensure designs meet the rigorous demands of controlling and monitoring fission reactors. You will be a key contributor in validating the first commercial reactor design in over 50 years. Responsibilities and Duties: * Lead verification efforts for FPGA designs using SystemVerilog and UVM frameworks, from testplan development through coverage closure. * Develop and maintain automated verification testbenches targeting functional, regression, and edge-case coverage. * Define and execute verification strategies for sensor processing, serial communication, and actuator handling logic. * Collaborate directly with RTL designers and embedded software engineers to identify design intent, resolve bugs, and ensure complete functional coverage. * On-site, 40 hours per week. Required Skills and Qualifications: * Bachelor's degree in computer engineering, electrical engineering, or a related field. * 7+ years of FPGA verification experience with significant depth in functional verification. * Expert proficiency in SystemVerilog and UVM-based verification methodologies. * Strong understanding of FPGA verification flows — simulation, coverage analysis, and regression management. * Experience verifying multi-clock domain designs. * Familiarity with serial communication protocols such as UART, SPI, and I2C. Desired Skills and Qualifications: * Experience with the Microchip PolarFire SoC platform. * Proficiency with Linux and bash shell scripting. * Experience with Docker. * Excellent documentation skills and demonstrated ability to work in multidisciplinary engineering environments. Benefits and Perks * Stock: Substantial incentive stock plan for all full-time employees. * Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans. * One Medical: Sponsored memberships for employees and their dependents. * Vision: 100% top tier plan coverage + 50% for dependents. * Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents. * Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits. * 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees. * Daily catered lunch. Free snacks and drinks. * Flexible PTO policy. Remote workday allocation. * Company and team-bonding events, happy hours and in-person camaraderie. * Beautiful El Segundo headquarters close to the Pacific Ocean. Total Compensation and Benefits Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant. The best of today’s advanced reactor builders don’t wait for job postings. They join the winning team. If that’s you, contact us directly for immediate opportunities: . We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law. Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.

Job DescriptionDescriptionVenturi Astrolab, Inc. (Astrolab) is pioneering new ways to explore and operate on distant planetary bodies. We are singularly focused on designing, building, and operating a fleet of multi-purpose commercial planetary rovers to extend and enhance humanity’s presence in the solar system. We are seeking motivated, creative, and exceptional people to join our world-class team. The Director of Safety and Mission Assurance is responsible for ensuring that the proper safety process, analysis and protocols are set in place for the LTVS program in the factory, at the launch site and in in lunar operations consistent with the risk tolerance set by NASA and Astrolab and the appropriate regulatory agencies. The Director of Safety and Mission Assurance will provide technical expertise and recommendations on the appropriate tools and techniques to be used at all locations within the Astrolab LTVS Program consistent with the program’s risk tolerance and applicable regulations. Our Astrolab team works collaboratively to design and implement exceptional engineering solutions to enable off planet exploration. We are seeking a systems engineer with experience in one or more of the following areas: • Systems safety, • Hazard analysis, • Risk management, • Fault tree analysis, • Reliability modeling, • Probabilistic risk analysis, • Lead the safety and mission assurance team at Astrolab and with our subcontractors’ teams to analyze and develop procedures and processes to assure safety and mission success consistent with the risk tolerance of NASA, Astrolab and the appropriate regulations, • Coordinate among all Astrolab and subcontractor elements to ensure a consistent safety and mission assurance approach across the various members of the team, • Collaborate with NASA and our Program Manager to ensure there is safe implementation of program interfaces and that hazards cannot progress across system interfaces, • Lead the integrated analysis of hazards, probabilistic risk analysis and other S&MA deliverables on the LTVS contract, • Guide the team in developing analyses, procedures and protocols for the LTVS program, • Bachelor’s degree in engineering or physical sciences, • 5+ years’ experience in spaceflight programs, • Preference to 5+ years’ experience in NASA projects and programs, • Preference to candidates with systems engineering experience in one or more of the following areas:, • Systems safety, • Hazard analysis, • Risk management, • Fault tree analysis, • Reliability modeling, • Probabilistic risk analysis, • Mission assurance, • Preference to candidates with detailed knowledge of NASA’s Systems Safety Handbook and Safety Culture Handbook, • Preference to candidates with experience with commercial spaceflight programs, • Join a team of best-in-class engineers building the foundation of planetary surface exploration, • Equity ownership in the company, • Comprehensive health benefits, including medical, dental, vision, and mental health support, • 401(k) plan with company match, • Flexible PTO and parental leave, • Home office set up reimbursement, • Fully flexible and remote friendly work environment, • Weekly lunch stipend, plus complimentary snacks and beverages on-site, • Once a month social hour on-site with food and drinks

Job Description Divergent is a technology company that has architected, invented, built, and commercialized an end-to-end factory system called the Divergent Adaptive Production System (DAPS) that comprehensively uses machine learning to optimally engineer, additively manufacture, and flexibly assemble complex integrated vehicle structures and subsystems. Products created using DAPS are superior in performance, lower in cost, rapidly customizable to meet mission and customer-specific requirements, faster to market, and scalable on demand to high volume production. Divergent is a qualified Tier 1 supplier to global automotive OEMs, and Divergent is now expanding to support mission critical needs in the Aerospace and Defense sector. Join us to be a part of this transformative journey, where your impact will shape the future of technology and production. Schedule This is a 3 - 4 x 11 rotating shift working alternating Wednesdays. Shifts Available • Sun - Wed 2nd shift (4pm - 3:30am) The Role • Conduct receiving, in-process, and final inspections to ensure conformance to the requirements., • Perform inspections utilizing engineering drawings, standard procedures, calibrated manual gages/tools, and various inspection methods., • Record and maintain accurate data including inspection results, non-conformance reports (NCRs), and other quality documentation., • Collaborate with cross-functional teams to resolve quality issues and implement corrective/preventive actions., • Create and maintain inspection files, interpret results, and produce complete, accurate inspection reports., • Assist Leadership with other various inspections and inspection-related tasks., • Keep the Metrology Lab clean, organized, and safe following 5S principles., • Use metrology Scanners, such FARO, Romer, Creaform C‑Track, MetraSCAN, GOM ScanBox, to acquire geometrical scan data., • Process raw scan data, remove noise, and export files using comprehensive 3D metrology software such as PolyWorks & Zeiss. Basic Qualifications • Ability to lawfully access information and technology that is subject to US export controls, • At minimum 1 to 2 year of experience in a Quality inspector role in an aerospace, automotive, or other relevant production environment, • High‑school diploma (required)., • Proficient computer literacy (Windows, Teams, Excel, etc.)., • Ability to read and understand engineering drawings, including knowledge of GD&T, • Ability to lift parts up to 50 lb and operate scanning arms for extended periods., • Strong verbal and written communication skills., • Team‑oriented mindset with high attention to detail., • Ability to analyze and solve complex problemsPreferred Qualifications, • Associate or higher degree in a technical field or equivalent work experience, • Background interfacing with Quality, Engineering, and Production teams, • Experience in regulated or high-performance manufacturing environmentsWork Environment, • Occasionally exposure to noise, machinery, welding, machining, hot surfaces, and airborne particles., • Requires frequent standing, walking, bending, reaching, and handling of precision tools and materials., • Must lift up to 40 lbs. independently and 50 lbs. with assistance., • May involve crouching, climbing, confined spaces, or work at heights., • PPE (including but not limited to safety glasses, hearing protection, gloves, respirators as needed) and company uniform are required., • May occasionally require extended or weekend hours to meet production deadlines.Compensation At Divergent, our pay range is based on the level of the job. For this role, we will consider candidates at levels TCH 01 - TCH 03 as evaluated through our interview process. • TCH 01: $27.00 -37.00/hour, • TCH 02: $31.00 - $43.00/hour, • TCH 03: $36.00 - $50.00/hour Pay Range$27—$50 USD What We Offer: • Holistic Compensation Package: Enjoy a world-class compensation package that includes a competitive salary, equity plan, and discretionary results-based incentive bonus opportunities, ensuring you're truly valued for your contributions., • Wellness and Time Off: Embrace a healthy lifestyle with paid vacation, sick time, and company holidays, including a year-end shutdown to recharge. We support growing families with paid parental leave, recognizing the importance of bonding time., • Comprehensive Health and Wellness: Prioritize your well-being with our comprehensive health and wellness benefits, offering both HMO and Premium PPO options. Additionally, benefit from company-sponsored life insurance and short and long-term disability coverage for peace of mind., • Investment in Growth: We're committed to your professional development. Take advantage of reimbursement opportunities for learning and development initiatives, empowering you to continuously expand your skill set and reach peak performance., • Collaborative and High-Performing Environment: Join our collaborative, dynamic, and high-performing team within a fast-paced, mission-driven company. Together, we're disrupting the traditional manufacturing industry, fostering innovation, and integrating people and technology to reduce our footprint. Equal Employment Opportunity Divergent is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected characteristic. Divergent provides affirmative action in employment for qualified Individuals with Disabilities and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans' Readjustment Assistance Act. EEO Poster In order to adjust to changes in our business, it may become necessary to add, remove or modify certain duties and responsibilities, or to reassign you to another job position. From time to time you may be asked to work on special projects or to assist with other work. Your cooperation and assistance in performing such additional work is expected. E-Verify: Right to Work Our company participates in E-Verify. E-Verify is a program that electronically confirms a candidate's eligibility to work in the United States after completing the Employment Eligibility Verification (Form I-9). The information provided on the Form I-9 is compared to the records contained in the Social Security Administration and Department of Homeland Security (DHS) databases. This helps employers verify the identity and employment eligibility of newly hired employees. Eligibility to Work Poster (English) | Eligibility to Work Poster (Spanish) Los Angeles Fair Chance Initiative for Hiring Ordinance (FCIHO) Pursuant to the Los Angeles Fair Chance Initiative for Hiring Ordinance (FCIHO), we will consider for employment qualified applicants with arrest and conviction records. No agencies, no solicitations, and no calls please.

Job Description A New Paradigm For Space Operations. Who We Are:Space Kinetic is a cleared, venture-backed startup focused on addressing urgent national security priorities. Our goal is to deliver a suite of asymmetric capabilities for space superiority and missile defense leveraging our proprietary electromechanical deployment system, which enables the rapid deployment of low-cost payloads through space without firing a thruster. Space Kinetic is currently assembling its TRL-5 prototype. Our goal is to leverage this platform to provide the United States with a new tool for securing the space domain & catalyzing the emerging space economy. What You'll Do: The Principal Flight Software Engineer will be required to work in a fast-paced prototyping environment with an aggressive schedule toward flight and should have experience and a general understanding of spaceflight payloads. In this position, you will be responsible for low-level and high-level software in Space Kinetic's products through all phases of the development process. As a Principal, you will be responsible for software designs from concept through production, including product roadmaps, block diagrams, detailed design and coding, analysis, test and qualification. The Principal Software Engineer will serve as the technical leader for the development, integration, and validation of Space Kinetic's electromechanical system. This role is responsible for the architecture, design, and implementation of mission-critical software that enables spacecraft control, autonomy, communication, and safety. The ideal candidate possesses deep experience in embedded real-time systems, software reliability, and spacecraft operations. • Lead the design and development of space Kinetic flight software architecture, including guidance, navigation, control (GNC), telemetry, command, and fault management systems., • Define software requirements, interfaces, and verification strategies in coordination with systems, electrical, and mission engineering teams., • Develop robust, real-time, and fault-tolerant software using C/C++ and/or Rust in embedded or RTOS environments., • Perform software design reviews, code reviews, and verification activities to ensure safety, reliability, and performance compliance with space flight standards (e.g., NASA NPR, ECSS, DO-178C)., • Mentor and guide software engineers through technical leadership, code quality enforcement, and system-level integration., • Support spacecraft-in-the-loop, hardware-in-the-loop (HIL), and flight simulation testing environments., • Contribute to continuous improvement of software development processes, tools, and best practices across the engineering organization., • Participate in mission readiness reviews, anomaly resolution, and on-orbit software updates and maintenance., • Experience with simulation environments and ground software integration., • Excellent leadership, collaboration, and communication skills across multidisciplinary teams., • Strong problem-solving ability and technical judgment under mission-critical constraints., • Bachelor of Science (BS) or Master of Science (MS) degree in Computer Science, Electrical Engineering, or Computer Engineering., • 10+ years of experience developing embedded or real-time software for space, aerospace, robotics, or mission-critical systems., • Proven experience leading software development through all phases of the system lifecycle—from requirements through flight operations., • Strong proficiency in C/C++, with working knowledge of Python or scripting languages for automation and testing., • Familiarity with RTOS, bare-metal programming, or Linux-based embedded systems., • Deep understanding of software reliability, deterministic timing, concurrency, and resource management in constrained environments., • To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder)., • Experience with flight software frameworks (e.g., NASA cFS, F' FPrime, or custom architectures)., • Familiarity with model-based systems engineering (MBSE) and interface control documentation., • Knowledge of space communication protocols (CCSDS, SpaceWire, MIL-STD-1553, etc.). *Our vision is unique, and so is the team we're building. If you're driven to succeed in this role, even if your background doesn't fully align with every qualification, we want your application.Where You'll Be: * The position is onsite at our headquarters in El Segundo, CA. Domestic travel may be required (up to ~20% of the year). What We Offer: • Equity-Based Compensation, • Highly Competitive PTO and Holiday Calendar, • Comprehensive Medical, Dental, and Vision Coverage, • Unique Performance-Based Bonus Structure, • Health and Wellness Stipend Equal Employment Opportunity: Space Kinetic provides equal employment opportunities to all employees and applicants without regard to race, color, religion, age, sex, gender identity, sexual orientation, national origin, veteran status, disability or any other legally protected status. The annual base salary for this role is below. Pay Grades are determined by role, level, location, and alignment with market data. Individual pay will be determined on a case-by-case basis and may vary based on the following considerations: interviews and an assessment of several factors that are unique to each candidate, job-related skills, relevant education/experience, certifications, abilities of the candidate and internal equity. Pay Range$150,000—$190,000 USD

Job DescriptionDescriptionAs a Flight Software Engineer at Impulse, you will be responsible for the design, development, and integration of the software that powers our Space Vehicles. You will work closely with avionics engineers, GNC engineers, propulsion engineers, and other cross-disciplinary teams to deliver high-reliability, high-performance software for in-space transportation. Responsibilities • Contribute to the design, implementation, integration, and verification of software for:, • Guidance, Navigation, and Control (GNC) algorithms, • Command and telemetry handling, • Mission sequencing, autonomy, and fault management, • Closed-loop control of propulsion, attitude control, and other time-critical systems, • Implement features for Impulse’s real-time flight software framework to meet deterministic performance requirements in space environments., • Develop detection and mitigation algorithms for anomalies such as sensor failures, actuator malfunctions, or radiation-induced faults., • Direct and participate in code reviews, ensuring compliance with software safety, reliability, and maintainability standards., • Support mission operations and troubleshoot real-time issues during ground integration, environmental testing, and on-orbit operations. Minimum Qualifications • Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, or related degrees, • 4+ years writing C/C++ code for an embedded system or vehicle of some kind (robot, car, drone, spacecraft, etc), • Demonstrated understanding of computer architecture, operating systems, data structures, and computer networking, • Experience with Real Time Operating Systems (RTOS) or with Embedded Linux, • Experience using version control, test cases, and other software best practices Preferred Skills and Experience • Proven track record delivering flight software for spacecraft— including launch vehicles, OTVs, upper stages, or other in-space propulsion systems., • Familiarity with NASA cFS, ROS2, or custom middleware for space applications., • Expertise in designing software for deterministic timing and hard real-time constraints. Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options, and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan. Impulse Space’s spacecraft manufacturing business is subject to U.S. export regulations including the International Traffic in Arms Regulations (ITAR) and Export Administration Regulations (EAR). This position requires applicants to be either U.S. Persons (i.e., U.S. citizen, U.S. national, lawful permanent U.S. resident (green card holder), an individual granted asylum in the U.S., or an individual admitted in U.S. refugee status) or persons eligible to obtain an export license from the U.S. Departments of State, Commerce, or other applicable U.S. government agencies. Learn more about the ITAR here. Impulse Space is an Equal Opportunity Employer; employment with Impulse Space is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

Job Description Senior Flight Software Engineer – Help Build the Next Generation of Spacecraft Systems! El Segundo, CA | On-site Opportunity Summary A fast-growing space technology startup is developing advanced spacecraft systems for high-energy orbital missions across LEO, MEO, GEO, and cislunar space. Founded by experienced engineers with backgrounds at leading aerospace organizations, the team is building next-generation propulsion and vehicle platforms that push the boundaries of orbital access and mission capability. This role offers the chance to take ownership of critical flight software systems supporting upcoming vehicle demonstrations and future missions. You will work closely with a highly technical founding team, move quickly, and play a hands-on role across the full software lifecycle. As the company scales, this position has strong potential to grow in scope and leadership responsibility. About Us We are an engineering-driven space startup focused on developing innovative spacecraft and propulsion technologies for demanding missions beyond traditional low Earth orbit. Our team blends deep aerospace experience with a startup mindset, emphasizing rapid development, high accountability, and mission-focused execution. We are building proprietary systems that enable new mission profiles and expand what is possible in space operations. Job Duties • Lead the architecture and development of core flight software systems that meet performance, reliability, and mission requirements, • Implement and integrate software supporting guidance, navigation, and control, command and telemetry, mission sequencing, health monitoring, and fault management, • Develop real-time and safety-critical software using clean, efficient, and testable coding practices, • Support embedded software development for microcontrollers and flight hardware, • Implement and maintain communication interfaces such as UDP, Ethernet, and multicast protocols, • Collaborate closely with avionics and hardware engineers across the full product lifecycle, • Design and execute hardware-in-the-loop and system-level test activities, • Produce clear technical documentation for software design, operational concepts, and system behavior Qualifications • Bachelor’s degree in computer science, computer engineering, aerospace engineering, electrical engineering, or a related field, • 2+ years of professional software development experience, ideally in aerospace or embedded systems, • Strong foundation in C or C++ with working knowledge of Python and Git-based workflows, • Experience working with real-time operating systems and satellite or embedded communication protocols, • Solid understanding of microcontroller architectures, interfaces, and system constraints, • Demonstrated ability to debug, optimize, and analyze system performance, • Comfortable working in fast-moving, resource-constrained environments, • Strong problem-solving skills using first-principles engineering approaches Preferred Experience • Background in flight software, spacecraft systems, or mission-critical embedded applications, • Experience with telemetry systems, command and control software, or mission management tools, • Familiarity with safety-critical software development and formal certification processes, • Knowledge of memory management, scheduling, and fault analysis for real-time systems, • Experience using tools such as Grafana or similar monitoring platforms, • Prior work in early-stage or high-growth startup environments Why Join Us • Opportunity to work on cutting-edge space technology, • High-impact role with real ownership and responsibility, • Direct collaboration with experienced technical founders, • Fast-paced environment with meaningful engineering challenges, • 401k with company matching, • Fully covered medical, dental, and vision benefits for employees, • Partial coverage for dependents, • Meaningful equity participation in a growing company, • Ability to grow with the company as it scales Compensation Details $150,000 - $210,000

Job DescriptionSpacecraft Flight Computing EngineerThe Opportunity We are supporting a well-funded space company developing a human-rated spacecraft with real flight hardware, real missions, and real technical ownership. This role sits on a small, elite Flight Computing team responsible for the design and implementation of the spacecraft’s computing architecture — from custom flight computers through operating systems, low-level software, and fault-tolerant behavior. This is not a traditional flight software role layered on top of vendor avionics. The team designs the computers, defines the operating environment, and owns how the system behaves under real-world faults. You would work directly with the engineer who architected the fault-tolerant computing and networking systems for Falcon 9 and Dragon, including the hardware that interfaces with the International Space Station. What You’ll Work On * Designing and implementing spacecraft flight computing systems with full hardware/software ownership * Developing and tuning low-level software across bootloaders, operating systems, and device drivers * Building fault-tolerant behavior that allows systems to continue operating through anomalies * Working closely with custom flight computer hardware designed in-house * Defining how compute, timing, and networking behave across spacecraft subsystems * Participating in system bring-up, integration, debugging, and mission support * Collaborating with a small group of highly capable engineers who value first-principles design What We’re Looking For We are open to exceptional engineers at multiple experience levels, provided they have strong fundamentals and real technical depth. Strong indicators include: * Deep experience with C/C++ in low-level or systems contexts * Background in embedded systems, firmware, kernel-level Linux, or RTOS-based development * Comfort working close to hardware (bring-up, debugging, timing, fault analysis) * Experience designing or supporting real-time or safety-critical systems * Engineers who build things because they’re curious — not just because it’s assigned Prior spacecraft experience is not required. Engineers from adjacent domains (embedded systems, automotive safety, robotics, compute infrastructure, etc.) are welcome if they bring the right depth and mindset. What Makes This Different * Small, senior technical team — no large hierarchies, no busywork * Minimal legacy code — engineers are empowered to fix or redesign what doesn’t make sense * Modern, high-performance compute platforms, not legacy aerospace hardware * Real authority over architecture and implementation decisions * Direct mentorship and collaboration with one of the most experienced flight computing architects in the industry * A rare blend of startup-level autonomy with the resources of a major space program Location & Eligibility * Based in the South Bay / Greater Los Angeles area * Candidates must be U.S. persons due to regulatory requirements * Relocation support may be available Interested? If you’re excited by the idea of building spacecraft computers the right way — with real ownership, real impact, and real technical peers — we’d welcome a conversation.

Job DescriptionAbout Radiant Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant’s unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor at the Idaho National Laboratory next year, with initial customer deliveries beginning in 2028. About the role Radiant is seeking a Senior FPGA Engineer to join our Embedded Systems team. You will lead the design, development, and validation of FPGAs for the reactor instrumentation and control system, safety-critical applications, sensor and actuator handling, and communication systems. This role requires close collaboration with hardware engineers, embedded software engineers, and test engineers in a cross-functional setting to architect cohesive designs that meet the rigorous demands of controlling and monitoring fission reactors. You will play a central role in delivering the first commercial reactor design in over 50 years. Responsibilities and Duties: * Lead the architecture and design of sensor processing systems from concept through integration and field deployment. * Develop complex logic designs in VHDL and SystemVerilog, establishing coding standards and design patterns for the broader team. * Integrate and optimize designs onto FPGA/SoC platforms, owning timing closure and resource utilization tradeoffs. * Define and implement verification strategies, including automated test frameworks and coverage-driven methodologies. * Mentor junior and mid-level FPGA engineers, conducting design and code reviews to uphold quality and consistency. Required Skills and Qualifications: * Bachelor's degree in computer engineering, electrical engineering, or a related engineering field. * 5+ years of experience designing and delivering FPGA-based systems. * Expert-level proficiency in VHDL, SystemVerilog, or equivalent HDL. * Proven track record owning full-cycle FPGA development — from RTL design through simulation, synthesis, and hardware validation. * Experience in troubleshooting timing closure issues. * Strong understanding of formal and simulation-based verification methodologies. Desired Skills and Qualifications: * 7+ years of experience designing and delivering FPGA-based systems. * Experience with embedded C/C++. * Experience with the Microchip PolarFire SoC platform. * Experience with Linux and bash shell scripting. * Experience with Docker. * Excellent documentation skills and demonstrated ability to lead in multidisciplinary environments. Benefits and Perks * Stock: Substantial incentive stock plan for all full-time employees. * Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans. * One Medical: Sponsored memberships for employees and their dependents. * Vision: 100% top tier plan coverage + 50% for dependents. * Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents. * Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits. * 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees. * Daily catered lunch. Free snacks and drinks. * Flexible PTO policy. Remote workday allocation. * Company and team-bonding events, happy hours and in-person camaraderie. * Beautiful El Segundo headquarters close to the Pacific Ocean. Total Compensation and Benefits Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant. The best of today’s advanced reactor builders don’t wait for job postings. They join the winning team. If that’s you, contact us directly for immediate opportunities: . We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law. Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls. Compensation Range: $158,000 - $219,450

Job Description Flight Software Engineer – Build Next-Generation Spacecraft Systems for High-Energy Missions! El Segundo, CA | On-site Opportunity Summary Join a venture-backed aerospace startup developing advanced spacecraft designed to operate in demanding orbital environments. This role sits at the heart of vehicle development, where software enables guidance, autonomy, communication, and overall mission execution. You will work closely with founders and a highly technical team to architect and deploy flight software that supports real-time, safety-critical spacecraft operations. This is a high-ownership opportunity for an engineer who thrives in fast-moving environments and wants to see their work move quickly from development to flight. You will contribute across the full lifecycle of vehicle software, from architecture and implementation through integration, testing, and mission support, helping shape both the product and the engineering culture as the company scales. About Us We are an early-stage space technology company building advanced in-space transportation and spacecraft systems aimed at expanding access to complex orbital missions. Founded by engineers with deep experience delivering flight-proven systems, the team combines startup speed with disciplined engineering practices to bring high-performance hardware and software together. Our environment emphasizes first-principles thinking, technical ownership, and rapid iteration toward real mission outcomes. Job Duties • Architect, develop, and deliver core flight software to meet system performance and reliability requirements, • Design, implement, integrate, and verify software supporting Guidance, Navigation, and Control (GNC) functions, • Develop real-time systems for command and telemetry handling, mission sequencing, autonomy, and fault management, • Implement deterministic software features within a real-time flight framework for spacecraft operations, • Develop closed-loop control software supporting propulsion, attitude control, and other time-critical vehicle functions, • Write clean, efficient, and testable code for embedded and safety-critical applications, • Build communication interfaces and networking protocols including Ethernet, UDP, multicast, and similar technologies, • Collaborate closely with avionics, propulsion, GNC, and hardware teams across the full development lifecycle, • Design and maintain embedded software targeting microcontrollers and vehicle compute systems, • Develop detection and mitigation algorithms for anomalies such as sensor failures, actuator issues, or radiation-induced faults, • Participate in design reviews and code reviews, ensuring strong safety, reliability, and maintainability practices, • Support hardware-in-the-loop testing, system integration, environmental testing, and mission readiness activities, • Troubleshoot and resolve real-time issues during testing and operational phases, • Maintain clear documentation including architecture, ConOps, and software interface definitions Qualifications • Bachelor’s degree in Computer Science, Computer Engineering, Aerospace Engineering, Electrical Engineering, or similar technical discipline, • 2+ years of software development experience, preferably involving embedded systems or complex vehicles, • Strong experience writing C/C++ for embedded or real-time applications, • Solid understanding of operating systems, computer architecture, data structures, and networking fundamentals, • Experience with version control systems and modern software development practices, • Familiarity with Real-Time Operating Systems (RTOS) or Embedded Linux environments, • Understanding of microcontroller architectures and hardware interfaces, • Strong debugging, performance optimization, and root-cause analysis skills, • Ability to move quickly and contribute across multiple engineering disciplines in a startup setting, • U.S. Person status or eligibility to obtain required export licensing Preferred Experience • Hands-on experience delivering flight or vehicle software for spacecraft, launch vehicles, drones, robotics, or autonomous systems, • Background in mission operations, on-orbit support, or integrated system testing, • Familiarity with NASA cFS, ROS2, or similar aerospace middleware frameworks, • Experience designing deterministic systems for hard real-time constraints, • Exposure to safety-critical software development processes or formal certification environments, • Experience with additional tools or languages such as Python, Rust, Git-based workflows, Grafana, or comparable platforms, • Participation in integration, testing, launch, or operational phases of a space vehicle program Why Join Us • Opportunity to build flight-critical systems with real mission impact, • High level of technical ownership and influence, • Fast-paced startup environment with strong engineering autonomy, • Direct collaboration with experienced aerospace founders and technical leaders, • Opportunity for long-term growth as the company scales, • Work on cutting-edge space technology pushing the boundaries of orbital operations, • Equity participation and the ability to help shape a growing team Compensation Details $135,000 - $225,000 #LI-AV

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