Senior Fuel Cell Systems Engineer

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 ZeroAvia advances its hydrogen-electric propulsion programmes, the Senior Fuel Cell Systems Engineer will lead the design, integration and validation of the hydrogen distribution subsystem, ensuring seamless operation across the fuel cell powertrain. You will be responsible for defining system architectures, optimising performance, supporting verification and safety activities, and driving supplier and stakeholder engagement throughout the development lifecycle. This is a unique opportunity to shape critical hydrogen technologies that will enable safe, reliable and certifiable zero-emission flight. Requirements Responsibilities: Lead the end-to-end design, development, integration, verification, and optimisation of the hydrogen distribution subsystem within the fuel cell powertrain. Define hydrogen flow architectures and operating strategies for all conditions, including start-up, shutdown, purge, fault response, maintenance, and emergency scenarios. Ensure seamless integration of the hydrogen subsystem with storage, fuel cell, thermal management, electrical, controls, and safety systems. Specify, select, qualify, and integrate hydrogen system components, supporting system sizing, modelling, performance analysis, and validation activities. Manage suppliers and support testing, safety assessments, troubleshooting, and continuous design improvement to ensure programme compliance and performance. Key requirements: Degree qualified (Bachelor's or Master's) in Aerospace Engineering, Mechanical Engineering, or a related discipline. Strong knowledge of hydrogen distribution systems, including pressure regulation, flow control, recirculation, purge, venting, and safety functions. Experience with hydrogen recirculation technologies such as venturi ejectors, blowers, and associated control strategies. Proven experience in gas system sizing, modelling, analysis, validation, and performance optimisation using engineering tools. Familiarity with systems engineering…