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Description Leidos addresses some of the nation's toughest defense challenges through cutting-edge signal processing and data analytics. Our San Diego-based team consists of highly skilled scientists and engineers focused on extracting maximum intelligence from complex radar data for both classified and unclassified systems. We are seeking a motivated and inquisitive candidate who thrives in research, algorithm development, and implementation. The ideal candidate demonstrates strong scientific curiosity and a commitment to continuous learning. Primary Responsibilities * Develop cutting edge radar signal processing and analysis algorithms for National Defense * Research cutting edge algorithms for radar noise reduction, detection, and characterization * Perform radar data analysis * Create efficient implementations in software * Document results * Work collegially within a talented team of peers Basic Qualifications * BS degree with 5+ years of prior relevant radar signal processing experience, Masters with 2 years of prior radar signal processing experience or Doctoral degree in a scientific field such as applied math, physics, or engineering. * Able to obtain a Top-Secret security clearance * Experience in scientific algorithm development and radar data analysis. * Excellent analytical and mathematical skills * Fluency in MATLAB, Python, or similar high-level language * Proven track record of innovation, problem solving, and achieving technical results * Strong documentation skills * Required on-site full-time work in San Diego, CA Preferred Qualifications * An understanding of complex radar phenomenology, detection, and characterization. * Experience programming in C/C++ * Comfortable with public speaking and/or customer presentations Come break things (in a good way). Then build them smarter. We're the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.” Original Posting:January 5, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range:Pay Range $87,100.00 - $157,450.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Qualifications: Required: * BS or MS in Electrical Engineering, Engineering Physics, Applied Physics or similar * 4-7 years experience with Pulsed Power/High Voltage Electronics design and testing * Experienced with high voltage pulsed power systems (20kV+, 100kA+, 10's ns - 100us's) and architect

Job Description Job Summary We are seeking a highly experienced RF/Electronic Warfare Engineer to support the engineering, integration, and testing of Hardware Defined Radio (HDR) and Software Defined Radio (SDR) systems. This role provides subject matter expertise in tactical RF systems and cryptographic subsystems, with direct support to Tactical Data Link (TDL) initiatives. This position is contingent upon contract award. What You Will Do * Lead engineering efforts for Hardware Defined Radio (HDR) and Software Defined Radio (SDR) systems * Provide subject matter expertise on RF systems and cryptographic subsystems * Support Tactical Data Link (TDL) projects and related integration activities * Perform systems integration and complex system analysis, including requirements gathering and validation * Develop work plans, cost estimates, and resource plans for integration activities * Manage integration, testing, installation, performance checks, inspections, and training for TDL systems (domestic and remote locations) * Apply dynamic modeling and simulation techniques in RF and Electronic Warfare (EW) environments * Conduct hands-on testing of tactical RF systems in Hardware-in-the-Loop laboratory environments * Support software development and testing in compliance with MIL-STD-6016, MIL-STD-3011, STANAG 5516, STANAG 5522, and Joint Range Extension (JREAP/JRE) capabilities * Draft technical documentation including engineering plans, test procedures, system designs, and evaluation reports Requirements * Bachelor of Science degree in applied science, computing, engineering, mathematics, physics, management information systems, or related engineering/computer science discipline * Minimum of 10 years of experience in Radio Frequency (RF) and Electronic Warfare (EW) * Experience with dynamic modeling and simulation of tactical RF systems * Hands-on experience designing, integrating, and testing tactical systems in laboratory environments * Experience in systems integration, requirements analysis, and complex system evaluation * Experience integrating Joint Range Extension capabilities onto U.S. and foreign military platforms * Experience developing technical documentation for integration, testing, and evaluation efforts Desired Skills * 5+ years of experience managing research, design, development, testing, evaluation, and integration of communication systems * Experience in System Integration Facilities (SIF), Combined Test Beds (CTB), Waveform Test Facilities (WTF), or similar lab environments * Experience with AEGIS systems, Satellite Tactical Data Links, Joint Range Extension Applications Protocol (JREAP), Link-22 Data Link Processor (DLP), or comparable systems * Experience testing and certifying JTRS tactical RF systems in laboratory environments Clearance Requirements * U.S. Citizenship required * Active U.S. Government Secret clearance required Travel Requirements * No travel required

Job DescriptionJOB DESCRIPTION:The Software Integration & Operations (SIO) group turns frontier autonomy into mission-ready aircraft. We own the commit-to-flight pipeline—deterministic aircraft and mission simulation, HIL/VIL integration, CI/CD, automated flight qualification testing, and release engineering. Our goal is simple: make AI fly—safely, repeatably, and fast. As a Modeling & Simulation Engineer, you will be responsible for improving and adding to our world and aeronautical models so that our operator training and internal engineering pipelines have a seamless translation from sim to real results. What You'll Do • Develop and enhance aeronautical physics models (aerodynamics, propulsion, environmental, structural, etc.) for use in simulation and evaluation., • Translate theoretical models into efficient, reliable C++ implementations with a focus on numerical accuracy and performance., • Validate models against real-world data and authoritative references, including field test data and calibration procedures., • Collaborate with simulation and training application teams to ensure models integrate cleanly into operator-facing tools., • Design automated validation and regression testing strategies for mathematical models to ensure fidelity across releases., • Prototype and evaluate new modeling techniques (reduced-order models, uncertainty quantification, machine learning–based surrogates) to push the state of the art., • Document assumptions, equations, and validation results so that both engineers and operators can trust model outputs. Required Qualifications, • BS or higher in Aerospace Engineering, Applied Math, Physics, or related field with 1+ years of aerospace modeling experience., • C++ foundation with experience implementing numerical methods., • 1+ years of experience working on pilot/operator training systems., • Experience with Eigen or SciPy for model prototyping and validation., • Familiarity with state estimation sensor models (GPS, IMU, Gyro, etc) for simulation environments., • Background in multi-body dynamics or flight mechanics, • Knowledge of uncertainty quantification and statistical analysis methods., • Strong problem-solving mindset with a collaborative and detail-oriented approach., • Familiarity with Python for test automation and data analysis pipelines.

Job DescriptionJOB DESCRIPTION:The Software Integration & Operations (SIO) group turns frontier autonomy into mission-ready aircraft. We own the commit-to-flight pipeline—deterministic aircraft and mission simulation, HIL/VIL integration, CI/CD, automated flight qualification testing, and release engineering. Our goal is simple: make AI fly—safely, repeatably, and fast. As a Modeling & Simulation Engineer, you will be responsible for improving and adding to our sensor and communications model suite so that our operator training and internal engineering pipelines have a seamless translation from sim to real results. What You'll Do • Develop and enhance radar sensor models for use in simulation and evaluation of aeronautical vehicles., • Translate theoretical models into efficient, reliable C++ implementations with a focus on numerical accuracy and performance., • Validate models against real-world data and authoritative references, including field test data and calibration procedures., • Collaborate with simulation and training application teams to ensure models integrate cleanly into operator-facing tools., • Design automated validation and regression testing strategies for mathematical models to ensure fidelity across releases., • Prototype and evaluate new modeling techniques (reduced-order models, uncertainty quantification, machine learning–based surrogates) to push the state of the art., • Document assumptions, equations, and validation results so that both engineers and operators can trust model outputs. Required Qualifications, • BS or higher in Aerospace Engineering, Applied Math, Physics, or related field with 3+ years of aerospace modeling experience., • C++ foundation with experience implementing numerical methods., • Demonstrated experience with aerospace models such as: Radar sensors, Radio communications systems, • Experience validating simulations against real-world or experimental data., • 1+ years of experience working on pilot/operator training systems., • Experience with Eigen or SciPy for model prototyping and validation., • Familiarity with state estimation sensor models (GPS, IMU, Gyro, etc) for simulation environments., • Demonstrated experience with payload sensor models including: Laser senros, IR and optical cameras, • Knowledge of uncertainty quantification and statistical analysis methods., • Experience with parallelization or GPU acceleration for compute-heavy models., • Strong problem-solving mindset with a collaborative and detail-oriented approach., • Familiarity with Python for test automation and data analysis pipelines.

Job Description Optical Engineer 2. As we scale, you will be instrumental in building our foundation from the ground up. This is a dynamic, hands-on role for a self-starter who thrives in a fluid startup environment. You'll have the opportunity to work on cutting edge technologies, work closely with leadership, and develop and implement engineering practices that support our mission and growth. Your key responsibilities are as follows: Work independently and in a team while overcommunicating with the manager, project engineer, and the teammates. Will mentor junior engineers. Execute complex engineering tasks involving planning, preparation, data/information collection, and analysis and decision-making in a process involving peer reviews and documentation of the results. Use tenacity, patience, self-discipline, and passion for excellence to assure accuracy of execution schedule, data quality/integrity, conformance to company best practices, clarity in communication, and documentation. Use every opportunity to grow competency through mentorship, curiosity, communication, exposure, and initiative. Requirements This position requires access to export-controlled information. Employment is contingent upon the applicant being a U.S. person as defined by 8 U.S.C. § 1324b(a)(3). Experience: A bachelors degree in Optical Engineering, Physics, or a related field. Minimum of 2 years of relevant experience, ideally within a startup or technology company. Skills: In-depth knowledge of various optical engineering topics along with a strong grasp of a standard optical engineering degree curriculum. Comprehensive understanding of optical modeling techniques including ray tracing, wave propagation, and electromagnetic solvers. Insight into laser beam propagation, including how the movement and rotation of optics influence a beam's near-field, far-field, beam quality, and fiber coupling efficiency. Ability to design according to specifications by planning design processes that address a range of innovative requirements, identifying the most efficient analysis methods for each, and developing and validating new design and analysis approaches. Capability to assess optical layouts for optimal performance, manufacturability, and risk evaluation. Familiarity with arranging laser modules within optical design software. Extensive knowledge of how to quantitatively characterize an optic, including its material properties, surface specifications, surface irregularities, roughness, mechanical constraints, coatings, power handling, environmental considerations, testing, and inspection methods. Thorough understanding of tolerance analysis techniques for component fabrication. Knowledge of fiber optics as applied to high-power continuous wave (CW) laser systems, including multi-mode, single-mode, polarization-maintaining, step index, photonic crystal, and endcap variants. Proven ability to successfully complete engineering tasks involving design software (preferably Ansys Zemax OpticStudio, Photon Engineering FRED, and/or Lambda Research OSLO), quantitative analysis/programming tools (such as Python), instrumentation and measurement, part fabrication or procurement, integration and testing, data collection, and documentation. Startup Mindset: You're creative, flexible, and eager to wear multiple hats. You're passionate about building systems from the ground up and comfortable with ambiguity and change. Benefits The expected annual salary range for this position is $100,000-$150,000. As a full-time employee, you will be eligible for Monarchs comprehensive benefits package, which includes: Medical, Dental, and Vision insurance Fidelity 401(k) plan with 4% employer matching 20 paid time off (PTO) days per year 13 paid company holidays 9/80 work schedule (every other Friday off)

Job DescriptionJOB DESCRIPTION:The Software Integration & Operations (SIO) group turns frontier autonomy into mission-ready aircraft. We own the commit-to-flight pipeline—deterministic aircraft and mission simulation, HIL/VIL integration, CI/CD, automated flight qualification testing, and release engineering. Our goal is simple: make AI fly—safely, repeatably, and fast. As a Modeling & Simulation Engineer, you will be responsible for improving and adding to our sensor and communications model suite so that our operator training and internal engineering pipelines have a seamless translation from sim to real results. What You'll Do • Develop and enhance radar sensor models for use in simulation and evaluation of aeronautical vehicles., • Translate theoretical models into efficient, reliable C++ implementations with a focus on numerical accuracy and performance., • Validate models against real-world data and authoritative references, including field test data and calibration procedures., • Collaborate with simulation and training application teams to ensure models integrate cleanly into operator-facing tools., • Design automated validation and regression testing strategies for mathematical models to ensure fidelity across releases., • Prototype and evaluate new modeling techniques (reduced-order models, uncertainty quantification, machine learning–based surrogates) to push the state of the art., • Document assumptions, equations, and validation results so that both engineers and operators can trust model outputs. Required Qualifications, • BS or higher in Aerospace Engineering, Applied Math, Physics, or related field with 5+ years of aerospace modeling experience., • C++ foundation with experience implementing numerical methods., • Demonstrated experience with aerospace models such as: Radar sensors, Radio communications systems, • Experience validating simulations against real-world or experimental data., • 1+ years of experience working on pilot/operator training systems., • Experience with Eigen or SciPy for model prototyping and validation., • Familiarity with state estimation sensor models (GPS, IMU, Gyro, etc) for simulation environments., • Demonstrated experience with payload sensor models including: Laser senros, IR and optical cameras, • Knowledge of uncertainty quantification and statistical analysis methods., • Experience with parallelization or GPU acceleration for compute-heavy models., • Strong problem-solving mindset with a collaborative and detail-oriented approach., • Familiarity with Python for test automation and data analysis pipelines.

Job Description Join our fast-paced and passionate team as a Robotics Process Engineer 2. As we scale, you will be instrumental in building our foundation from the ground up. This is a dynamic, hands-on role for a self-starter who thrives in a fluid startup environment. You'll have the opportunity to work on cutting edge technologies, work closely with leadership, and develop and implement engineering practices that support our mission and growth. Your key responsibilities are as follows: • Work independently and in a team while overcommunicating with the manager and the teammates. May mentor junior engineers., • Execute complex engineering tasks involving planning, preparation, data/information collection and analysis and decision-making in a process involving peer reviews and documentation of the results., • Use tenacity, patience, self-discipline and passion for excellence to assure accuracy of execution schedule, data quality/integrity, conformance to company best practices, clarity in communication and documentation., • A bachelor’s degree in mechanical engineering, Physics, or a related field and a minimum, • Basic knowledge of mechanical engineering, applied physics, optical engineering, computer science, or robotics degree curriculum, • Demonstrated successful execution of engineering tasks including use of mechanical CAD and quantitative analysis/programming tools, instrumentation and measurement, part fabrication or procurement, integration and test, data collection, analysis and documentation, • Demonstrated successful execution of automated test or component alignment using robotics, machine vision, or electrical test equipment Startup Mindset: • You're creative, flexible, and eager to wear multiple hats. The expected annual salary range for this position is $85,000-$125,000. As a full-time employee, you will be eligible for Monarch’s comprehensive benefits package, which includes: • Medical, Dental, and Vision insurance, • Fidelity 401(k) plan with 4% employer matching, • 20 paid time off (PTO) days per year, • 13 paid company holidays, • 9/80 work schedule (every other Friday off) Monarch Quantum is proud to be an equal opportunity employer and does not discriminate on the basis of race, color, citizenship status, national origin, ancestry, sex, sexual orientation, age, religion, creed, physical or mental disability, medical condition, marital status, veteran status or any other characteristics protected under applicable federal, state and local laws.