ZeroAvia

Join ZeroAvia at the forefront of zero-emission aviation as a Hydrogen Fuel System Engineer, playing a critical role in developing the next generation of gaseous and cryogenic hydrogen systems for aircraft. In this role, you will lead the end-to-end technical development of onboard hydrogen storage, distribution, and conditioning architectures-working at the cutting edge of engineering to enable safe, efficient, and certifiable hydrogen propulsion. From system design and integration through to testing, validation, and regulatory compliance, you will collaborate closely with cross-functional teams, suppliers, and partners to bring innovative hydrogen technologies from concept to flight-ready reality. This position is integral to ZeroAvia's mission to accelerate the transition to clean aviation by eliminating carbon emissions from flight. By advancing robust, high-performance hydrogen fuel systems and ensuring their seamless integration into aircraft platforms, you will directly contribute to making zero-emission air travel commercially viable at scale. Your work will help overcome some of the most complex engineering and safety challenges in hydrogen aviation, supporting certification and enabling a sustainable future for aerospace. The Hydrogen Fuel System Engineer will: Lead the design and development of gaseous and cryogenic hydrogen fuel systems, including storage, distribution, and conditioning architectures. Support aircraft integration by defining system layouts, component packaging, and interfaces for onboard hydrogen systems. Manage supplier and partner relationships to ensure timely delivery and technical compliance of hydrogen system components. Define and execute verification, validation, and testing strategies across component, subsystem, and full system levels, including facility oversight. Perform system architecture, safety analysis (FHA, FMEA, FTA), and performance validation, driving design improvements and technical decisions. Ensure compliance with aerospace regulations, safety standards, and hazardous area practices (e.g. EASA/CAA, DO-160, ATEX, DSEAR). Qualifications: Degree in Mechanical Engineering (or related) with strong experience in gas systems, including hydrogen and high-pressure environments. Proven expertise in designing, integrating, and testing gaseous and cryogenic hydrogen fuel systems. Solid knowledge of thermodynamics, fluid/gas dynamics, and system performance analysis. Hands on experience with pressure testing, leak detection (e.g. helium), and validation of fluid and vacuum systems. Experience applying system safety and reliability methods (FHA, FMEA/FMECA, FTA) and using engineering tools (e.g. ANSYS, MATLAB, Python, CAD). Strong understanding of hydrogen safety, cryogenic systems, and relevant regulatory frameworks; aerospace or transport sector experience is advantageous. Why Join Us? We want to help you be your best self, at work and at home, that's why we provide our employees with Private health and dental care - get access to services and support when you need them. Add your family members too. Mental health support - enjoy a culture where positive mental health is front of mind with our trained Mental Health First Aiders, Employee Assistance Programmes and wellbeing support. Free lunch and healthy snacks - keeping you fuelled up so you can help us deliver the technology of the future. Sports, games and culture clubs - connect and keep fit with other ZeroAvians by joining one of our clubs - such as, running, cycling, padel, trivia, theatre and gardening. We also offer: Stock options - so you can share in our success. 25 days holiday, plus public holidays and additional days awarded for long service - to help you manage your work-life balance. Free EV Charging and membership in our EV Club. Salary Sacrifice Schemes for EV Club, Curry's Tech and Cycle to Work. Weekly Spot Bonuses to reward excellence. Income Protection and Legal Support for peace of mind. Relocation Support to make your move seamless. Diversity and Inclusion As an emergent company shaping the aviation industry, we know that diversity fuels success and unlocks potential. We embrace being an equal opportunity employer and actively seek individuals from diverse backgrounds. We value the multitude of skills, perspectives, and mindsets everyone can bring to the table. These experiences ignite creativity, originality, and growth. We proudly reject discrimination in all forms, including that based on race, religion, color, national origin, sex, gender expression, sexual orientation, age, marital status, veteran status, or disability status.

At ZeroAvia, we're pioneering the transition to zero-emission aviation. As a leader in clean aviation technology, we're seeking a System Requirements Engineer to play a pivotal role in ensuring the quality, integrity and traceability of requirements across our fuel cell systems supporting the delivery of safe, certifiable aerospace products that are transforming the future of flight. This role sits at the heart of our systems engineering organisation, acting as the focal point for requirements engineering excellence. You will work closely with engineering, safety, certification and supplier teams to define, validate and manage requirements throughout the development lifecycle, ensuring compliance with aerospace standards and supporting successful certification programmes. Key Responsibilities Elicit, derive and author high-quality requirements at aircraft-interface, system and equipment levels, ensuring they are clear, verifiable and traceable. Own end-to-end requirements traceability, including decomposition, derivation rationale and alignment with safety and certification objectives. Lead requirements validation activities, including reviews, validation matrices and evidence generation to support development assurance plans. Develop equipment and item-level specifications, including controller requirements, hardware/software allocation and design constraints. Manage interface requirements, supplier requirements flow-down and compliance reviews, maintaining robust configuration and change control processes. Champion requirements engineering best practice across the organisation through coaching, quality reviews and continuous improvement activities. Role Requirements Degree-qualified in Aerospace, Electronic, Mechanical, Electrical Engineering or a related discipline; Master's degree preferred. Minimum 5 years' experience in systems or requirements engineering within aerospace, including involvement in aircraft certification programmes. Strong expertise in ARP4754B requirements processes, including requirements capture, validation, decomposition and traceability. Working knowledge of ARP4761/A, DO-178C and DO-254, with experience allocating requirements across hardware and software domains. Proven experience using Polarion or equivalent requirements management tools, alongside established requirements authoring methodologies such as EARS, INCOSE or ISO/IEC/IEEE 29148. Excellent communication and stakeholder management skills, with the ability to influence technical teams, mentor colleagues and operate effectively in fast-paced, multidisciplinary engineering environments. Why Join Us? We want to help you be your best self, at work and at home, that's why we provide our employees with Private health and dental care - get access to services and support when you need them. Add your family members too. Mental health support - enjoy a culture where positive mental health is front of mind with our trained Mental Health First Aiders, Employee Assistance Programmes and wellbeing support. Free lunch and healthy snacks - keeping you fuelled up so you can help us deliver the technology of the future Sports, games and culture clubs - connect and keep fit with other ZeroAvians by joining one of our clubs - such as, running, cycling, padel, trivia, theatre and gardening. We also offer: Stock options - so you can share in our success. 25 days holiday, plus public holidays and additional days awarded for long service - to help you manage your work-life balance. Free EV Charging and membership in our EV Club. Salary Sacrifice Schemes for EV Club, Curry's Tech and Cycle to Work Weekly Spot Bonuses to reward excellence. Income Protection and Legal Support for peace of mind. Relocation Support to make your move seamless. Diversity and Inclusion As an emergent company shaping the aviation industry, we know that diversity fuels success and unlocks potential. We embrace being an equal-opportunity employer and actively seek individuals from diverse backgrounds. We value the multitude of skills, perspectives, and mindsets everyone can bring to the table. These experiences ignite creativity, originality, and growth. We proudly reject discrimination in all forms, including that based on race, religion, color, national origin, sex, gender expression, sexual orientation, age, marital status, veteran status, or disability status.

ZeroAvia is looking for an Air Systems Engineer to design and develop air delivery systems for hydrogen fuel cell powertrains. This role requires a seasoned aerospace engineer with deep knowledge of air system architecture, turbomachinery, and thermo-fluid analysis to oversee full technical ownership. The ideal candidate will lead aerothermal design aspects for hydrogen fuel cell systems and work collaboratively across diverse teams to ensure compliance and quality assurance in product design. Key benefits include private health care, stock options, and a collaborative work environment.

We are seeking an experienced Senior Systems Engineer (IVVQ) to join ZeroAvia based in Kemble. This role owns and drives the planning of validation, integration, verification, and environmental qualification test campaigns across the ZA200 propulsion system, flexing across these activities as programme needs evolve. This is a critical position supporting the delivery of certified, zero emission aircraft propulsion systems, directly contributing to ZeroAvia's mission. Responsibilities Own and deliver IVVQ activities across aircraft, system, and item levels for the ZA200 fuel cell system Develop and maintain V&V, integration, and qualification plans, ensuring alignment with lifecycle and programme schedules Plan and execute validation, integration, verification, and DO-160G environmental qualification campaigns Authorise test specifications, procedures, execution, and results; lead defect investigation and resolution Lead IVVQ reviews and represent IVVQ at design reviews, managing verification risk and stakeholder alignment (customer, regulator, suppliers) Collaborate cross-functionally (Airworthiness, Certification, Safety, Test, Design) to deliver compliant IVVQ in line with ARP4754B / ARP4761A Experience & Qualifications Degree in Aerospace, Electrical, Mechanical, or related engineering discipline (Master's preferred) 6+ years' systems engineering experience in aerospace, including certified or in-certification programmes Strong working knowledge of ARP4754B (essential), with familiarity of ARP4761/A, DO-178C, DO-254 Proven experience planning and executing system-level IVVQ programmes, including verification strategy, test development, and traceability Experience with DO-160G environmental qualification and supplier test oversight (including witnessing and data acceptance) Proficiency with requirements tools (e.g., Polarion); experience in propulsion, fuel cell, electric, or emerging aerospace systems advantageous Why Join Us? Private health and dental care- get access to services and support when you need them. Add your family members too. Mental health support- enjoy a culture where positive mental health is front of mind with our trained Mental Health First Aiders, Employee Assistance Programmes and wellbeing support. Free lunch and healthy snacks- keeping you fuelled up so you can help us deliver the technology of the future Sports, games and culture clubs- connect and keep fit with other ZeroAvians by joining one of our clubs - such as, running, cycling, padel, trivia, theatre and gardening. We also offer: Stock options- so you can share in our success. 25 days holiday, plus public holidays and additional days awarded for long service- to help you manage your work-life balance. Free EV Chargingand membership in our EV Club. Salary Sacrifice Schemesfor EV Club, Curry's Tech and Cycle to Work Weekly Spot Bonusesto reward excellence. Income Protection and Legal Supportfor peace of mind. Relocation Supportto make your move seamless. Diversity and Inclusion As an emergent company shaping the aviation industry, we know that diversity fuels success and unlocks potential. We embrace being an equal-opportunity employer and actively seek individuals from diverse backgrounds. We value the multitude of skills, perspectives, and mindsets everyone can bring to the table. These experiences ignite creativity, originality, and growth. We proudly reject discrimination in all forms, including that based on race, religion, color, national origin, sex, gender expression, sexual orientation, age, marital status, veteran status, or disability status.

ZeroAvia is seeking an Air Systems Engineer to lead the design and development of air delivery systems for its hydrogen fuel cell powertrains. This role is ideal for an experienced aerospace engineer with deep expertise in air system architecture, turbomachinery, and thermo fluid analysis, who can take full technical ownership from concept generation through certification ready design, testing, and supplier integration. Acting as a subject matter expert, the successful candidate will work across multidisciplinary teams and the supply chain to develop, analyse, and validate fuel cell cathode and air delivery systems using first principles analysis, simulation, and empirical testing, supporting the certification and deployment of ZeroAvia's current and future zero emission propulsion systems. The Air Systems Engineer will assume responsibility for all aspects of aerothermal design of air delivery systems for hydrogen fuel cell power generation systems. Working with internal stakeholders and the supply chain you will develop and demonstrate air delivery equipment and architectures to support certification of current and future hydrogen fuel cell power generation systems. Acting as the subject matter expert, you will lead on air delivery system topics technical discussions. You'll need a dynamic approach to complex problem solving including utilising empirical methods, basic calculations from first principles and 1D & 3D simulation tools. You'll use CAD to create designs and drawings of related system components and assemblies and maintain design data in PLM system in accordance with company aeronautical standards. To succeed in this role, you'll be a self starter, diligent, results focused and flexible. Aerospace experience, knowledge of CAA, EASA, FAA certification processes and objectives are a huge advantage. Main responsibilities Own all aspects of fuel cell cathode system development; including system architecture, requirements capture, equipment design development and testing. Lead aerothermal concept generation through to development of system architecture, requirements and design substantiation documents. Analyse air delivery systems and components to define lower level functional and performance requirements. Proactively lead internal stakeholders and supply chain on implementation of air delivery system equipment such as electric compressors, filters, valves, heat exchangers, fluid conveyance and instrumentation. Develop strategies and capabilities for component level engineering evaluation testing including design, installation and commissioning of equipment test rigs. Host, participate, present as appropriate in internal and external design and project reviews. Experience and qualifications Education: Bachelor's degree in an appropriate discipline and commensurate depth of technical experience, or an equivalent combination of education and experience. First hand knowledge of implementing compressed air systems and equipment with direct experience in hydrogen fuel cell system an advantage. Experience in implementation of high speed turbomachinery (compressors, turbines) and associated system architectures. Conversant with associated hardware such as compressors, filters, valves, humidifiers and sensors. Experience in developing air delivery equipment test rigs including instrumentation and data acquisition systems, knowledge of programming environments (e.g. LabVIEW) a plus. Experience of high voltage direct current (HVDC) systems and power electronics a plus. User of MATLAB Simulink/Simscape or similar 1D thermo fluid software. Experience of commercial CFD codes (e.g. Ansys Fluent/CFX). Working knowledge of CAD and PLM tools (e.g. Siemens NX, Teamcentre). Use of requirements management tools (e.g. Polarion). Commensurate depth of related aerospace industry experience. Excellent interpersonal skills and level of spoken and written English. Ability to work on own initiative as well as part of an Integrated Project Team. Why Join Us? We want to help you be your best self, at work and at home, that's why we provide our employees with Private health and dental care- get access to services and support when you need them. Add your family members too. Mental health support- enjoy a culture where positive mental health is front of mind with our trained Mental Health First Aiders, Employee Assistance Programmes and wellbeing support. Free lunch and healthy snacks- keeping you fuelled up so you can help us deliver the technology of the future. Sports, games and culture clubs- connect and keep fit with other ZeroAvians by joining one of our clubs - such as, running, cycling, padel, trivia, theatre and gardening. We also offer: Stock options- so you can share in our success. 25 days holiday, plus public holidays and additional days awarded for long service- to help you manage your work life balance. Free EV Charging and membership in our EV Club. Salary Sacrifice Schemes for EV Club, Curry's Tech and Cycle to Work. Weekly Spot Bonuses to reward excellence. Income Protection and Legal Support for peace of mind. Relocation Support to make your move seamless. Diversity and Inclusion As an emergent company shaping the aviation industry, we know that diversity fuels success and unlocks potential. We embrace being an equal opportunity employer and actively seek individuals from diverse backgrounds. We value the multitude of skills, perspectives, and mindsets everyone can bring to the table. These experiences ignite creativity, originality, and growth. We proudly reject discrimination in all forms, including that based on race, religion, color, national origin, sex, gender expression, sexual orientation, age, marital status, veteran status, or disability status.

We are seeking an experienced controls engineer to join ZeroAvia based in Kemble. This role owns the development of control algorithms, plant modelling, and the supporting control system architecture for ZA hydrogen electric power systems, working across fuel cell stack, hydrogen delivery, air supply, coolant, and electrical networks. This is a critical position supporting the delivery of certified, zero emission aircraft propulsion systems, directly contributing to ZeroAvia's mission. The successful candidate will operate as the senior technical authority on closed loop performance and the realisation of control intent in airworthy embedded software; they will shape the system level control and monitoring architecture that frames their algorithm work, and provide cover on system performance simulation where the modelling toolchain extends to it. Responsibilities Define, develop and maintain control algorithms, including tuning, structure, and implementation Build and maintain multi-domain plant models (fluidic, thermal, electrical) to support control design and verification (MIL/SIL/HIL) Specify and validate closed-loop performance, including stability, robustness, and dynamic response Design control architecture elements such as observers, estimators, state machines, and fault monitoring strategies Lead control logic verification activities and integration into wider test and certification programmes Act as technical authority for control systems, ensuring alignment with safety, certification, and system performance requirements Experience / Qualifications Required Degree in aerospace, electrical, electronic or control systems engineering (advanced degree preferred) 5+ years' experience in safety critical controls engineering within aerospace or similar regulated industries Proven experience developing control logic for certified or certifiable systems (e.g. CS 23/25, DO 178C environments) Strong applied control theory knowledge (classical and modern methods) with ability to justify stability and robustness Experience in plant modelling and system identification using tools such as MATLAB/Simulink/Simscape Familiarity with aviation safety and development standards (e.g. DO 178C, ARP4754B, ARP4761A) and verification methods (MIL/SIL/HIL) Desirable Experience with propulsion systems (e.g. FADEC, electric or hydrogen propulsion, eVTOL) Background in advanced control architecture (state machines, fault detection, BIT strategies) Proficiency in supporting tools such as Polarion, Python, or MATLAB scripting for analysis Why Join Us? We want to help you be your best self, at work and at home, that's why we provide our employees with Private health and dental care- get access to services and support when you need them. Add your family members too. Mental health support- enjoy a culture where positive mental health is front of mind with our trained Mental Health First Aiders, Employee Assistance Programmes and wellbeing support. Free lunch and healthy snacks- keeping you fuelled up so you can help us deliver the technology of the future Sports, games and culture clubs- connect and keep fit with other ZeroAvians by joining one of our clubs - such as, running, cycling, padel, trivia, theatre and gardening. We also offer: Stock options- so you can share in our success. 25 days holiday, plus public holidays and additional days awarded for long service- to help you manage your work life balance. Free EV Chargingand membership in our EV Club. Salary Sacrifice Schemesfor EV Club, Curry's Tech and Cycle to Work Weekly Spot Bonusesto reward excellence. Income Protection and Legal Supportfor peace of mind. Relocation Supportto make your move seamless. Diversity and Inclusion As an emergent company shaping the aviation industry, we know that diversity fuels success and unlocks potential. We embrace being an equal opportunity employer and actively seek individuals from diverse backgrounds. We value the multitude of skills, perspectives, and mindsets everyone can bring to the table. These experiences ignite creativity, originality, and growth. We proudly reject discrimination in all forms, including that based on race, religion, color, national origin, sex, gender expression, sexual orientation, age, marital status, veteran status, or disability status.

Join ZeroAvia and help shape the future of sustainable aviation. As an Embedded Software Engineer, you will play a key role in the development of the embedded control systems that power our next-generation hydrogen-electric propulsion technology. Working within a multidisciplinary engineering team, you will be responsible for the full software development lifecycle, from requirements capture and architecture through to implementation, verification, integration, and certification. This is an exciting opportunity for an experienced embedded software professional with a strong background in safety-critical systems to contribute to disruptive aerospace technology. You will work on high-integrity software for advanced controller platforms, ensuring compliance with industry standards while helping to drive innovation, reliability, and performance. The ideal candidate will bring deep expertise in embedded C development, a passion for engineering excellence, and a collaborative approach to solving complex technical challenges in a fast-paced, mission-driven environment. Responsibilities: Develop embedded software for ZeroAvia's controller platform. Produce requirements, design, implementation, and tests for software components. Ensure software life cycle data produced are in accordance with development processes and procedures. Perform hardware/software integration for debugging, verification, and release of software. Contribute improvements to internal procedure and standards. Required Experience & Qualifications: Bachelor's degree in related engineering discipline (or equivalent knowledge and experience). 8+ years of experience in software development life cycle, at least 5 years of which within aerospace (DO-178B/C) or other safety-critical domain. Proficiency in embedded C and familiarity with MISRA C standards. Experience inbare-metal programming with microcontrollers. Knowledge of software architecture and/or software testing methods. Perform requirement analysis and flow down to software and detail design. Desirable: Knowledge of communication protocols such as CAN, UART, SPI, and I2C. Proficiency with requirements management and configuration management tools. Experience of model-based development using MATLAB Simulink. Working knowledge with ARM microcontrollers. Understanding of control systems development. Basic understanding of electronics and ability to read schematics. Experience in certification programmes and in compliance demonstrations. Experience in scripting languages like Python would be an added advantage. Why Join Us? We want to help you be your best self, at work and at home, that's why we provide our employees with Private health and dental care- get access to services and support when you need them. Add your family members too. Mental health support- enjoy a culture where positive mental health is front of mind with our trained Mental Health First Aiders, Employee Assistance Programmes and wellbeing support. Free lunch and healthy snacks- keeping you fuelled up so you can help us deliver the technology of the future Sports, games and culture clubs- connect and keep fit with other ZeroAvians by joining one of our clubs - such as, running, cycling, padel, trivia, theatre and gardening. We also offer: Stock options- so you can share in our success. 25 days holiday, plus public holidays and additional days awarded for long service- to help you manage your work-life balance. Free EV Chargingand membership in our EV Club. Salary Sacrifice Schemesfor EV Club, Curry's Tech and Cycle to Work Weekly Spot Bonusesto reward excellence. Income Protection and Legal Supportfor peace of mind. Relocation Supportto make your move seamless. Diversity and Inclusion As an emergent company shaping the aviation industry, we know that diversity fuels success and unlocks potential. We embrace being an equal-opportunity employer and actively seek individuals from diverse backgrounds. We value the multitude of skills, perspectives, and mindsets everyone can bring to the table. These experiences ignite creativity, originality, and growth. We proudly reject discrimination in all forms, including that based on race, religion, color, national origin, sex, gender expression, sexual orientation, age, marital status, veteran status, or disability status.

ZeroAvia is seeking an experienced Embedded Software Engineer to drive the development of embedded control systems for our hydrogen-electric propulsion tech. You will own the full software lifecycle from requirements and architecture through implementation, verification, integration and certification in a high-integrity aerospace environment. The role emphasizes deep embedded C, MISRA C, bare-metal programming on microcontrollers, and collaboration across multidisciplinary teams to deliver

ZeroAvia is seeking a Senior Systems Engineer (IVVQ) to lead the planning of validation, integration, and environmental qualification test campaigns for the ZA200 propulsion system in Kemble, England. The role involves developing V&V plans, collaborating with cross-functional teams, and ensuring delivery of compliant, certified aircraft propulsion systems. Candidates should have a degree in a relevant engineering discipline and extensive experience in aerospace systems engineering.

At ZeroAvia, we're accelerating the transition to zero-emission aviation through the development of hydrogen-electric propulsion. We are thrilled to share an opportunity to join our team as Chief Engineer to lead us through a pivotal stage in the development of our fuel cell system. We are looking for exceptional technical leadership to drive product maturity, manage complex engineering challenges and ensure successful execution against critical programme milestones. Based at our UK headquarters at Cotswold Airport (Kemble), the Chief Engineer will lead the development, testing and certification of a stand alone, multi platform fuel cell system for aerospace applications. This role is accountable for maintaining technical integrity, providing strategic engineering leadership and ensuring delivery in accordance with ZeroAvia's Design Organisation requirements. Oversee all design work conducted by the Engineering Teams, participate in Design Review meetings, as appropriate. Manage design work and coordinate between teams for their projects, overseeing resources and personnel, both internal and external, to ensure appropriate training and authorizations are in place. Support investigations and implement corrective actions in response to reported defects or failures related to their projects, as directed by the HDO or the initiating party. Keep the senior managers informed about progress and issues related to their projects, ensuring project teams use best practices and providing guidance and mentoring when needed. Identify and highlight any risks that could impact successful project delivery, maintain records of project progress, and ensure forward visibility of deliverables and key milestones. Experience and qualifications 10+ years of experience in technical leadership role in similar responsibilities in the aerospace industry Bachelor's degree in aerospace, mechanical or comparable engineering discipline and commensurate depth of technical experience. Experience in Part 21J, Part 21G, Part 21E, Part 145, CS 23, CS 25, CS E, standards and processes Excellent interpersonal skills and level of spoken and written English Why Join Us? We want to help you be your best self, at work and at home, that's why we provide our employees with Private health and dental care - get access to services and support when you need them. Add your family members too. Mental health support - enjoy a culture where positive mental health is front of mind with our trained Mental Health First Aiders, Employee Assistance Programmes and wellbeing support. Free lunch and healthy snacks - keeping you fuelled up so you can help us deliver the technology of the future Sports, games and culture clubs - connect and keep fit with other ZeroAvia employees by joining one of our clubs - such as, running, cycling, padel, trivia, theatre and gardening. We also offer: Stock options - so you can share in our success. 25 days holiday, plus public holidays and additional days awarded for long service - to help you manage your work life balance. Free EV Charging and membership in our EV Club. Salary Sacrifice Schemes for EV Club, Curry's Tech and Cycle to Work. Weekly Spot Bonuses to reward excellence. Income Protection and Legal Support for peace of mind. Relocation Support to make your move seamless. Diversity and Inclusion As an emergent company shaping the aviation industry, we know that diversity fuels success and unlocks potential. We embrace being an equal opportunity employer and actively seek individuals from diverse backgrounds. We value the multitude of skills, perspectives, and mindsets everyone can bring to the table. These experiences ignite creativity, originality, and growth. We proudly reject discrimination in all forms, including that based on race, religion, color, national origin, sex, gender expression, sexual orientation, age, marital status, veteran status, or disability status.

Join ZeroAvia at the forefront of zero-emission aviation as a Hydrogen Fuel System Engineer, playing a critical role in developing the next generation of gaseous and cryogenic hydrogen systems for aircraft. In this role, you will lead the end-to-end technical development of onboard hydrogen storage, distribution, and conditioning architectures-working at the cutting edge of engineering to enable safe, efficient, and certifiable hydrogen propulsion. From system design and integration through to testing, validation, and regulatory compliance, you will collaborate closely with cross-functional teams, suppliers, and partners to bring innovative hydrogen technologies from concept to flight-ready reality. This position is integral to ZeroAvia's mission to accelerate the transition to clean aviation by eliminating carbon emissions from flight. By advancing robust, high-performance hydrogen fuel systems and ensuring their seamless integration into aircraft platforms, you will directly contribute to making zero-emission air travel commercially viable at scale. Your work will help overcome some of the most complex engineering and safety challenges in hydrogen aviation, supporting certification and enabling a sustainable future for aerospace. The Hydrogen Fuel System Engineer will: Lead the design and development of gaseous and cryogenic hydrogen fuel systems, including storage, distribution, and conditioning architectures. Support aircraft integration by defining system layouts, component packaging, and interfaces for onboard hydrogen systems. Manage supplier and partner relationships to ensure timely delivery and technical compliance of hydrogen system components. Define and execute verification, validation, and testing strategies across component, subsystem, and full system levels, including facility oversight. Perform system architecture, safety analysis (FHA, FMEA, FTA), and performance validation, driving design improvements and technical decisions. Ensure compliance with aerospace regulations, safety standards, and hazardous area practices (e.g. EASA/CAA, DO-160, ATEX, DSEAR). Qualifications: Degree in Mechanical Engineering (or related) with strong experience in gas systems, including hydrogen and high-pressure environments. Proven expertise in designing, integrating, and testing gaseous and cryogenic hydrogen fuel systems. Solid knowledge of thermodynamics, fluid/gas dynamics, and system performance analysis. Hands on experience with pressure testing, leak detection (e.g. helium), and validation of fluid and vacuum systems. Experience applying system safety and reliability methods (FHA, FMEA/FMECA, FTA) and using engineering tools (e.g. ANSYS, MATLAB, Python, CAD). Strong understanding of hydrogen safety, cryogenic systems, and relevant regulatory frameworks; aerospace or transport sector experience is advantageous. Why Join Us? We want to help you be your best self, at work and at home, that's why we provide our employees with Private health and dental care - get access to services and support when you need them. Add your family members too. Mental health support - enjoy a culture where positive mental health is front of mind with our trained Mental Health First Aiders, Employee Assistance Programmes and wellbeing support. Free lunch and healthy snacks - keeping you fuelled up so you can help us deliver the technology of the future. Sports, games and culture clubs - connect and keep fit with other ZeroAvians by joining one of our clubs - such as, running, cycling, padel, trivia, theatre and gardening. We also offer: Stock options - so you can share in our success. 25 days holiday, plus public holidays and additional days awarded for long service - to help you manage your work-life balance. Free EV Charging and membership in our EV Club. Salary Sacrifice Schemes for EV Club, Curry's Tech and Cycle to Work. Weekly Spot Bonuses to reward excellence. Income Protection and Legal Support for peace of mind. Relocation Support to make your move seamless. Diversity and Inclusion As an emergent company shaping the aviation industry, we know that diversity fuels success and unlocks potential. We embrace being an equal opportunity employer and actively seek individuals from diverse backgrounds. We value the multitude of skills, perspectives, and mindsets everyone can bring to the table. These experiences ignite creativity, originality, and growth. We proudly reject discrimination in all forms, including that based on race, religion, color, national origin, sex, gender expression, sexual orientation, age, marital status, veteran status, or disability status.