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Experimental Physicist | Harwell, Oxfordshire | Competitive Salary + Equity This is a role for a rare kind of physicist: one who is energised, not unsettled, by exploring unanswered questions. IONECH is a seed-stage energy hardware start-up based at Harwell, Oxfordshire. We're developing the Air Voltaic (AV) Cell — an energy-harvesting device that uses controlled interactions between electrons and oxygen in air to capture subtle natural differences in the environment, converting available exergy into electrical power. At scale, it sits at the base of the energy stack: a platform power source that reduces grid dependence across virtually every electrical use case. The science is novel, the engineering is hard, and the technology pushes at the boundaries of current understanding. Not every question has an answer yet and that's the point. We're looking for an Experimental Physicist who can make confident progress in that environment: someone who knows when to move, when to ask, and how to extract signal from incomplete information as the full picture gradually emerges. The work You'll design, build, and iterate on physical prototypes in our Harwell lab, working directly alongside chemists and engineers on a problem that sits at the intersection of plasma physics, field emission, and energy conversion. This is a ground-floor experimental role. Your hands-on work will directly shape the direction of the technology. You'll need to be comfortable designing and running experiments without a complete theoretical picture in hand, drawing on your own judgement while actively tapping into the range of specialisms around you; physicists, chemists, and engineers who each hold a piece of the puzzle. The team is collaborative by design; knowing when to seek input is a strength here, not a gap. • Design and fabricate experimental energy cell components and prototypes, • Develop and refine field emitter design, geometries, morphologies, and materials, iterating to optimise reactive oxygen species (ROS) yield, • Characterise field emission behaviour using Fowler-Nordheim analysis, • Manage low-energy plasma conditions (pressure, gas composition, ionisation density) to reliably generate ROS, • Work closely with chemists and physicists to investigate the ROS generation-consumption cycle, identifying catalytic surfaces and environments that maximise exothermic yield, • Build and maintain a diagnostic suite including vacuum/pressure systems, high-voltage emission measurement, mass spectrometry or optical emission spectroscopy, calorimetry, and thermal imaging, • Maintain rigorous experimental records, analyse results quantitatively, and contribute to internal technical reports, IP documentation, grant applications, and investor materials, • Identify knowledge gaps and opportunities for innovation and optimisation, • Ensure compliance with safety, environmental, and regulatory standards, and contribute to a safe, well-organised lab environment What we're looking for You'll need: • A PhD in experimental physics, plasma physics, applied physics, or a closely related field (candidates with a Master's degree plus substantial relevant industry experience will be considered), • Demonstrated hands-on experience building and operating vacuum or low-pressure plasma systems, • Strong working knowledge of field emission theory and cold cathode device physics, • Experience with high-voltage electronics design and safe operating practice, • Proficiency in experimental data acquisition and analysis (Python, MATLAB, or equivalent), including quantitative uncertainty estimation, • The ability to design and fabricate experimental apparatus independently You'll stand out if you have: • Familiarity with reactive oxygen species chemistry, electrochemical cells, or plasma-assisted catalysis, • Experience with thermoelectric or other solid-state energy conversion devices, • A background in nano-structured emitter fabrication, • Knowledge of optical emission spectroscopy or mass spectrometry for plasma diagnostics, • Prior start-up or small-team research experience, • Contributions to patents or commercialisation of laboratory technology What we offer • Competitive salary benchmarked to your experience and background, • Equity — you share in what we're building, • Private medical healthcare, • Company pension, • Flexible, trust-based working culture, • A well-equipped lab at the Harwell Science and Innovation Campus — on the doorstep of one of Europe's leading concentrations of physics and energy research, and close to the communities of RAL, UKAEA, and the broader Harwell deep tech ecosystem, • A small team where your work is visible and consequential from day one How to apply Send your CV and a covering letter (one page maximum) explaining why this problem interests you and which parts of your experience are most relevant to the essential criteria. We read every application. We don't use screening software.

Head of Research and Engineering | Harwell, Oxfordshire | Highly Competitive + Equity This is technical authority in full: system architecture, experimental direction, and the judgement calls that determine where the programme goes next. IONECH is a seed-stage energy hardware start-up based at Harwell, Oxfordshire. We're developing the Air Voltaic (AV) Cell — an energy-harvesting device that uses controlled interactions between electrons and oxygen in air to capture subtle natural differences in the environment, converting available exergy into electrical power. At scale, it sits at the base of the energy stack: a platform power source that reduces grid dependence across virtually every electrical use case. Candidates who tend to do well here come from deep tech start-ups and industrial R&D environments; places where hardware has to work under real constraints, technical decisions carry real consequences, and there's no room for conclusions the data doesn't support. Experience using AI tools to accelerate hardware development cycles, surface failure modes early, and maintain momentum without sacrificing rigour is something we're actively looking for. The role This is not a desk-based leadership position. You will be embedded in the laboratory, shaping and running experiments, reviewing data, resolving cross-disciplinary conflicts, and driving rapid iteration from hypothesis to hardware. You will own the system-level architecture, including the interface definitions across emission, chemical, thermal, electrical, and vacuum subsystems; and you will maintain the formal system energy ledger that keeps science and engineering accountable to each other. You will report directly to the Managing Director and retain day-to-day authority over architecture and experimental decisions. System architecture and integration • Own and maintain system-level architecture, including clear interface definitions across emission, chemical, thermal, electrical, and vacuum subsystems, • Maintain and continuously reconcile a formal system energy ledger integrating modelling, experimental data, and hardware constraints, • Ensure all subsystem developments align with coherent system-level objectives Experimental direction and technical judgement • Define the shortest credible path from hypothesis to physical test, • Lead structured experimental planning with explicit success criteria and validation methods, • Ensure experiments isolate variables and test system-level hypotheses, not just component performance, • Make clear and timely calls on when to pivot, refine, or terminate technical avenues Rapid prototyping and iteration • Establish and lead a fast-cycle build-test-learn process, • Drive pragmatic prototype development focused on learning velocity and controlled validation, • Ensure prototypes are instrumented appropriately for defensible performance measurement, • Balance momentum with rigour, avoiding both over-modelling and premature optimisation, • Lead the transition of the technology through technical readiness levels, maintaining momentum throughout Technical leadership • Lead a small multidisciplinary team of scientists and engineers, • Create clarity in roles, ownership, and accountability across science and engineering functions, • Foster a culture of rigorous empiricism, intellectual honesty, and rapid iteration, • Identify capability gaps and recruit strategically to strengthen the technical bench, • Translate complex technical progress into clear, defensible narratives for founders, investors, and partners What we're looking for You'll need: • A Master's degree (or equivalent experience) in physics, engineering, materials science, electrochemistry, or a closely related discipline, • Proven ability to translate complex scientific concepts into functioning experimental hardware, • Strong thermodynamic literacy and comfort working with system-level energy balances, • A track record of successful rapid, iterative hardware development: short build-test-learn cycles, comfort with early-stage failure as a data source, and the judgement to know when something is good enough to move forward, • Experience delivering functioning hardware systems under real-world constraints, not solely research-grade laboratory demonstrations, • Experience exercising technical judgement under uncertainty and making high-stakes direction calls, • Experience leading and managing small technical teams You'll stand out if you have: • A PhD in physics, engineering, materials science, electrochemistry, or a closely related discipline, • Hands-on experience with electron field emission, cold cathode systems, high-field environments, or vacuum electronics, • Experience in electrochemistry, reactive oxygen species environments, or related surface and chemical systems, • Experience with high-voltage power electronics or pulsed power systems, • Demonstrated experience integrating multidisciplinary hardware systems spanning thermal, electrical, vacuum, and chemical domains What we offer • Highly competitive salary, • Equity — you share in what we're building, • Private medical healthcare, • Company pension, • Flexible, trust-based working culture, • A well-equipped lab at the Harwell Science and Innovation Campus — a serious technical environment with the infrastructure to match the ambition, • Direct line to the MD and genuine influence over the technical direction of the company How to apply Send your CV and a covering letter (one page maximum) explaining why this problem interests you and which parts of your experience are most relevant to the essential criteria. We read every application. We don't use screening software.

Manufacturing Technician Location: Near Didcot, Oxfordshire Salary: Up to £45,000 per annum (dependent on experience) Job Type: Permanent, Full-Time Syntech Recruitment are working with a highly advanced engineering organisation operating within a precision manufacturing and test environment. Due to continued growth, they are seeking a skilled Manufacturing Technician to support the assembly, integration and testing of complex, safety-critical hardware. Manufacturing Technician Responsibilities * Precision assembly of mechanical and electro-mechanical hardware * Supporting integration and test activities across development and production builds * Assisting with functional, electrical, vibration, shock, thermal vacuum (TVAC) and RF testing activities * Writing and maintaining Manufacturing Assembly Procedures (MAPs) and Test Procedures * Inspection of machined components using in-house metrology equipment * Working closely with Product Assurance to define and qualify manufacturing processes * Supporting internal and customer technical reviews as required * Identifying and implementing process improvements * Occasional visits to suppliers and subcontractors Manufacturing Technician Skills * Strong engineering background with hands-on precision assembly experience * Proven experience using metrology equipment for detailed inspection * Understanding of structured manufacturi...

Thermal Insulation Engineers | Didcot | ££Excellent + ££Digs/Travel + ££Bonus Avenue are recruiting for Thermal Insulation Engineers for an outage in Didcot. Requirements: You must have a Thermal Insulation Engineering Apprenticeship/Time-served. Extensive experience of Thermal Insulation. A valid TICA card.START DATE: April SHIFT: Days, 12 days on and 2 days off, 10 hour shifts, BONUS: Bonus payment on every hour worked along with a completion bonus to be paid at the end of the outage PAYE with radius allowance or accommodation allowance. N.B. You will be required to pass a medical and drug and alcohol test before commencement of the project. Apply with your most recent CV or call Alanna on: (phone number removed) INDTEMP...

Why join our team at Johnson Controls? We are at the forefront of cutting-edge security innovation, we specialise in the design, installation, and support of advanced surveillance and integrated site protection systems. Our mission is to deliver intelligent, reliable, and affordable security solutions that safeguard high-profile environments. We dont just install technologywe engineer peace of mind. By combining our proprietary systems with best-of-breed technologies and meticulous project management, we deliver fully integrated, turn-key solutions tailored to each unique site. Our team conducts comprehensive threat and vulnerability assessments to ensure every solution is both precise and future-proof. What sets us apart is our deep expertise in high-end surveillance and bespoke installation techniques. This makes us a trusted partner in some of the most sensitive and demanding environments. If you're passionate about innovation, precision, and making a real impact in the world of security, you'll thrive here. What you will do As a Systems Engineer at Johnson Controls, your primary responsibility will be to provide exceptional engineering services to our customers across various aspects of system maintenance, and service delivery across CCTV, Access Control and Intruder Alarm systems. You will ensure that all work meets or exceeds our customers expectations and that Johnson Controls is seen as a trusted partner in delivering world-class engineering solutions. In this role, you will take full ownership of all engineering service activities, planned and preventative maintenance, and responding to technical call-outs. A key part of your role will be ensuring smooth coordination between internal teams and customers, maintaining excellent communication throughout, and ensuring accurate paperwork and billing records are kept. As an integral member of the Services and Maintenance Team, your ability to work proactively, independently, and as part of a wider team is critical. You will support the team by offering your expertise when responding to technical faults, while working closely with both new and existing customers to maintain, optimize, and enhance their systems. Additionally, you will be required to participate in the on-call rota to provide 24/7 engineering support. How You Will Do It: • Collaborate with customers, project management teams, and internal stakeholders to develop and deliver system requirements and solutions., • Manage system maintenance tasks and monitor all installed systems and infrastructure., • Ensure that solutions and services meet or exceed customer expectations., • Complete all project and service-related documentation to meet business timelines and operational standards., • Strong experience in integrated enterprise-level systems, including:, • CCTV, • Intruder Alarm Systems, • Perimeter Detection, • Access Control, • Video Intercom Systems, • Hands-on experience with technologies such as:, • Genetec, Gallagher, Milestone, FLIR Latitude, ProWatch, and Commend., • Experience with high-end CCTV cameras (Bosch, Axis, Optical/Thermal imaging)., • Experience with Grade 3 Intruder Alarm installations (Galaxy, Texecom, and peripherals)., • Familiarity with Senstar, Omnitrax/Fibre Patrol and Fibre Optic systems (desirable but not essential)., • Excellent communication skills, both internally and externally with customers., • Self-driven, enthusiastic, and able to work independently., • Willing to travel and spend time away from home., • Self-motivated with a positive, customer-focused attitude., • Proven ability to deliver high-quality customer engineering services., • Reliable and capable of working both autonomously and as part of a team. Apply now to become part of our team! #RMDFL JBRP1_UKTJ

Introduction Saab UK is part of Scandinavia's largest defence company, bringing together the best of Swedish and British innovation. Saab offers world-leading solutions and services in defence, aviation, space, and civil security to keep people and society safe. Our UK presence has been growing at pace, meaning we can offer a wide range of opportunities for personal fulfilment and career growth. We currently employ over 600 people across eight sites in the UK, and our specialisations include software engineering, underwater robotics, radars, AI, and armed forces training. What you will be part of: Explore a wealth of possibilities. Take on challenges, create smart inventions, and grow beyond. This is a place for curious minds, brave pioneers, and everyone in between. Together, we achieve the extraordinary, each bringing our unique perspectives. Your part matters. Saab is a leading defence and security company with an enduring mission, to help nations keep their people and society safe. Empowered by its 26,000 talented people, Saab constantly pushes the boundaries of technology to create a safer and more sustainable world. Saab designs, manufactures and maintains advanced systems in aeronautics, weapons, command and control, sensors and underwater systems. Saab is headquartered in Sweden. It has major operations all over the world and is part of the domestic defence capability of several nations. Read more about us ___. The Role: This role will be a part of our Saab Seaeye business in Fareham. In this role you will take responsibility for the full-lifecycle design and development of bespoke power conversion and transmission solutions in line with the company's business needs through innovation, creativity and professionalism. As Lead Engineer you will act as Technical Authority for concurrent power projects: from in-house designs to outsourced specification and management. Key Responsibilities: The role seeks an engineer with excellent knowledge of power architectures, transmission, conversion and distribution, whilst having an appreciation for the real-world subtleties involved in creating robust and reliable power systems. You may be working on anything from large-scale power conversion products, efficient cabled transmission designs all the way through to motor drives and low voltage converters. Our voltages range from 24V to 5000V with powers from 500W to 250kW. You will be responsible for the successful design, implementation and delivery into our products. This may include technically leading small multi-disciplinary teams and therefore the candidate must show an aptitude for directing and coordinating project activities and have strong communication/interpersonal skills. A product-focussed mindset is essential: taking a view across the different engineering disciplines to deliver the most appropriate solution. Our products provide unique challenges in designing non-conventional solutions which can meet size, weight and efficiency demands. Qualifications and Skills: Essential: • Significant Experience in Power Electronics, • Full-lifecycle experience: from concept to tested solution, • Self-starter: taking the lead and having a proactive mindset, • Excellent theoretical knowledge backed up by proven hands-on experience, • Proven knowledge of power transmission: AC and DC, applied to multi-km cabled solutions, • Proven Knowledge of DC converter topologies: Buck/Boost/Flyback/LLC/Full-Bridge, • Proven Knowledge of AC converter techniques: single phase/multiphase, power factor correction, • Experience of power converter product design AC-DC, DC-DC and DC-AC inverters, • Experience working with power switching devices: MOSFET, IGBT, SiCFET, GaNFET and associated drive circuitry, • Experience working with voltages up to 5kV and multi-kW powers, • Experience in designing or specifying custom transformer and magnetic components, • Experience using modelling and simulation packages, • Experience in both digital and analogue design concepts, • Experience of filter design and implementation, • Experience designing/specifying control systems for power conversion, • Knowledge of thermal management techniques, • Knowledge of design-for-compliance, • Experience developing requirements specifications and test procedures, • High Voltage Experience up to 5kV, • Thermal modelling experience, • Motor design principles and control techniques

A leading construction firm is looking for Thermal Insulation Engineers for an outage in Didcot, United Kingdom. Successful candidates should have a Thermal Insulation Engineering Apprenticeship and extensive experience in the field.

A leading engineering firm in the United Kingdom is seeking a Mechanical Engineer to support the design of advanced thermal and fluid systems.

Title: Experienced Thermal Insulation EngineerLocation: HullHours: 38 Hrs p/w - Mon-Fri - 0800-1630 + over time (optional)Salary: £15-£19ph - Negotiable based on experience. We are seeking a highly competent and experienced Thermal Insulation Engineer to deliver high-quality insulation and claddin

Proactive Personnel are currently recruiting for a Thermal Manufacturing Engineer for a international manufacturing company at their site based in Telford.

Job Title: Principal Thermal Mechanical Engineer Location: Cowes, Portsmouth Broad Oak, Great Baddow, 3 days a week onsite We offer a range of flexible working arrangements please speak to your recruiter about the options for this particular role Salary: Up to £77,100 (dependent on skills and expe

Senior Thermal Engineer - StevenageReference Code: 441671-en_GBContract Type: PermanentProfessional Communities: Products & Systems EngineeringYour RoleLead thermal design and analysis activities for spacecraft subsystems and components. Develop and validate thermal models using ESATAN-TMS. Define

Candidates should have at least 4 years of experience working with thermal equipment and possess City and Guilds 207 level 2 or equivalent. A leading technology company in the UK is looking for a skilled Thermal Equipment Technician.

A dynamic engineering company in the United Kingdom is looking for a Junior Design Engineer specializing in Motorsport Thermal Engineering.

A leading video surveillance solutions provider is seeking a Business Development Manager for the Thermal Imaging Market in the UK & Ireland.

A leading engineering company in the United Kingdom is seeking a Mechanical Engineer to support the design of advanced thermal and fluid systems.

As a Senior Thermal Engineer, you will lead the thermal design, analysis, and testing of spacecraft systems and components. Experience with thermal testing and instrumentation. Minimum 10 years of experience in thermal engineering within the space industry.

Responsibilities include analyzing cooling systems, performing flow and thermal analyses, and designing integration systems.

As a Senior Thermal Engineer, you will lead the thermal design, analysis, and testing of spacecraft systems and components. Lead thermal design and analysis activities for spacecraft subsystems and components. Strong understanding of space thermal environments and heat transfer mechanisms.

Massive customer resource regarding Thermal Imaging Market in UK & Ireland. At least 5 years of experience in the Thermal Imaging market. Business Development Manager – Thermal Imaging Market.

Project Engineer – Motorsport Thermal Engineering.

Manager, Engineering Sciences – Thermal, Fluids, and Combustion. Join Secretariat to apply for the Manager, Engineering Sciences – Thermal, Fluids, and Combustion role.

A leading global IT services company in the UK is seeking a Platform and Thermal Management Software Architect.

Job Description**Position OverviewAs a SCADA Project Engineer, you will be on the Construction team, with responsibility for the engineering, procurement support, commissioning, and acceptance of Distributed Control Systems (DCS) and associated communications and control infrastructure for therm

We provide thermal datasets from Space at an accuracy, frequency, and resolution that the world has never seen before. We are a satellite earth observation company specialising in remote sensing, earth observation, and thermal imagery products & services. Founded in 2016, our company's mission is to

A reputable engineering consulting firm located in London is seeking a Manager for Engineering Sciences with expertise in mechanical and fluid dynamics.The role involves conducting failure analysis, planning laboratory tests, and managing client communications.Candidates should possess a Ph.This ful

A research and consultancy firm is looking for a Process Validation professional to support their thermal processing clients through consultancy, training, and research activities.

A leading building services consultancy in West Yorkshire is seeking a skilled Building Physics Engineer / Sustainability Consultant to support analysis and optimization of building performance.This role involves delivering modelling and assessments while collaborating with MEP engineers.Ideal candi

About the job Thermal Insulation Engineers.

A sustainable space operations company in the UK is seeking a Senior Thermal Engineer to lead thermal design and analysis for spacecraft systems. In this role, you will develop thermal models, ensure compliance with mission requirements, and mentor junior engineers. Candidates must have a Bachelor��

This role is ideal for a passionate and technically minded Thermal Manufacturing Engineer who enjoys problem-solving, developing new processes, and working hands-on within a dynamic production environment. As the Thermal Manufacturing Engineer, you will be getting involved in:. Inspecting, maintaini

A leading engineering firm is seeking a Senior Engineer to drive thermal product development and manage engineering projects.

If so, join our dynamic team at Applied Thermal Control, the UK’s leading manufacturer of compact recirculating chillers. At Applied Thermal Control we are continuing to grow and are seeking an Electrical Engineer to:.

A leading aerospace technology company in the United Kingdom seeks a Senior Thermal Systems Design Engineer to join their high-growth team. The role involves designing thermal systems for electric propulsion units, guiding junior engineers, and optimizing cooling systems. The ideal candidate will ha

A dedicated engineering recruitment firm is seeking Thermal Insulation Engineers for a construction project in York.

A forward-thinking aerospace company in Greater London is seeking a Senior Thermal Engineer to lead the thermal design and analysis of spacecraft systems. You will develop thermal models, define control strategies, and ensure compliance with mission requirements while collaborating with cross-functi

As a Platform and Thermal Management Software Architect, you are responsible for providing technical contribution to automotive Design, creation and implementation of software architectures for AutoSAR-based ECUs.

This home-based position focuses on promoting Thermal Plates and associated Chemistry within the UK B2 Print sector.

Responsible for maintenance and emergency repairs of Vertiv’s Thermal Management products as well as other contracted systems. Senior Thermal Customer Engineer.

Develop and execute thermal test plans, including environmental testing, thermal cycling, and thermal vacuum tests. Perform thermal modelling, simulations, and analyses using tools such as ANSYS, Thermal Desktop, COMSOL, or MATLAB. Develop and optimise thermal control systems, including heat exchang

A leading technology company in the UK is seeking a Senior Thermal Customer Engineer responsible for maintenance of thermal management products.

Ideal candidates will have a degree in Thermal or Manufacturing Engineering and hands-on experience with thermal measurement tools and system design. A leading employment agency is seeking a Manufacturing Engineer specialized in Thermal Technology. This permanent position offers a salary up to £56,

About the job Thermal Insulation Engineer. As part of a heavy industrial project on a new build EfW in Belvedere, we are looking for 4 x Thermal Insulation Engineers to support with boilers and pipework. Qualifications in Thermal Insulation Engineering, Cladding.

A reputable engineering recruitment firm is seeking a skilled Thermal Engineer to join a respected engineering organization in Greater London. The successful candidate will be responsible for designing, analysing, and optimising thermal systems, applying thermodynamics, fluid mechanics, and heat tra

Responsibilities include supporting the rebuild of a chimney stack, fabricating and fitting thermal insulation, and installing aluminium cladding. A leading recruitment service provider in the UK is looking for Cladders / Thermal Insulation Engineers for an industrial project in Isle of Grain.

A leading engineering firm is looking for Thermal Insulation Engineers for an outage in Kings Lynn. Candidates must have a Thermal Insulation Engineering Apprenticeship, extensive insulation experience, and a valid TICA card.

A dedicated engineering recruitment service is seeking a Thermal Insulation Engineer for a 3-4 month project in England.