ZeroAvia is at the forefront of the transition to zero-emission flight, developing pioneering hydrogen-electric propulsion systems for both civil and defence aerospace applications. As the world's only Design Organization Approved company dedicated exclusively to hydrogen-electric aviation, we have achieved major flight test and regulatory milestones with the UK CAA and FAA, while securing more than 3,000 pre-orders from airlines, OEMs, and defence customers worldwide.

At ZeroAvia, you'll join a talented and mission-driven team tackling some of the aviation industry's most complex challenges. This is an opportunity to work on cutting-edge technology, contribute to groundbreaking aerospace innovation, and help shape the future of both commercial and defence aviation. Together, we're delivering hydrogen-electric flight to power sovereign and clean skies, strengthen aerospace resilience, and create lasting impact for our customers, the aviation industry, and future generations.

As a Hydrogen Fuel Systems Engineer, you will play a key role in the design, development, integration, and validation of gaseous and liquid hydrogen fuel systems for next-generation aircraft. Working across system architecture, requirements management, aircraft integration, safety analysis, testing, and certification activities, you will be responsible for delivering robust hydrogen storage, distribution, and conditioning solutions that meet demanding performance, reliability, and regulatory requirements. Collaborating closely with multidisciplinary engineering teams, suppliers, and certification stakeholders, you will drive technical development from concept through to flight-ready implementation, ensuring safe and efficient operation while helping to advance commercially viable hydrogen-electric aviation.

Requirements

Responsibilities:

• Lead the design and development of gaseous and liquid hydrogen fuel systems, including storage, distribution, conditioning, and aircraft integration.
• Define and manage system and component requirements, ensuring robust architecture, interfaces, and packaging solutions for onboard hydrogen systems.
• Drive supplier selection, development, and technical oversight, ensuring component performance, quality, compliance, and timely delivery.
• Plan and execute verification, validation, testing, and safety assessment activities, including FMEA, FHA, FTA, and performance evaluations.
• Ensure regulatory compliance and operational readiness by supporting certification activities, hazardous area requirements, and management of hydrogen refuelling and test facilities.

Key Requirements:

• Degree qualified in Aerospace, Mechanical Engineering, or a related discipline, with experience in hydrogen, gas, or cryogenic systems.
• Proven experience designing, integrating, and validating gaseous and liquid hydrogen fuel systems in high-pressure environments.
• Strong capability in system sizing, modelling, performance analysis, and validation using engineering and simulation tools.
• In-depth knowledge of thermodynamics, fluid and gas dynamics, system safety, and reliability methodologies such as FHA, FMEA/FMECA, and FTA.
• Hands-on experience with hydrogen and cryogenic system testing, coupled with a strong understanding of safety, regulatory, and certification requirements.

Benefits

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.