The Liquid Hydrogen Propulsion department is responsible for defining, designing and testing the liquid hydrogen storage, distribution and conditioning systems. This means that the LH2 department makes sure that liquid hydrogen can safely be used as a fuel for the PowerCell fuel cell system. LH2 will therefore design, order, integrate and test the LH2 tank, the heat exchanger and required cooling pipes, pressure regulators, cryogenic insulation, safety valves and lines.

As a Gaseous Hydrogen Propulsion Engineer, you will be responsible for the design, integration, and qualification of the full-scale gaseous hydrogen powertrain. At the heart of this system lies a 120 kW fuel cell stack, where hydrogen is converted into electrical energy with only water as a byproduct. Hydrogen is stored at 700 bar to minimize tank volume and enable integration into the aircraft, after which it is regulated, conditioned, and supplied to the fuel cell stack at lower pressures. You will be directly involved in the design, testing, and qualification of the fuel cell system, including hydrogen storage, distribution, and air supply subsystems. Because the fuel cell operates at roughly 50% efficiency, an equally powerful thermal management system is essential. You will therefore also work on the cooling architecture, which includes the coolant loop, radiators, and aerodynamic nose section. This system dissipates 120 kW of heat through radiators optimized for airflow and minimal drag. Your work will involve CFD simulations, thermal modeling, and testing to ensure efficient heat rejection and aerodynamic performance.

The Flight Testing engineers at AeroDelft are primarily responsible for ensuring that the full-scale aircraft obtains a permit to fly from the Dutch civil aviation authority (IL&T). They manage the comprehensive documentation, verification, and validation of the design, coordinate risk and safety assessments, and liaise with the Dutch aviation authorities and AeroDelft’s technical partners to prove and present the safety of the aircraft. Additionally, FT engineers develop and manage the Flight Test program of the aircraft, which includes coordinating with test pilots and formulating taxi test plans, flight test plans, and other essential documentation to ensure thorough evaluation of the aircraft's performance and safety.

The Fire Protection Department is responsible for all the safety systems in place meant to protect our aircraft and test pilots from any fires during all flight phases. This department is a very interdisciplinary one, as it is composed of fluid and thermodynamics, electronics and structural engineers. By bringing all these skill sets together, this department ensures that the risk of fires, including hydrogen jet flames, is contained. The work done by this team includes working on our composite firewall, analysing the performance of our ventilation and jettisoning systems with CFD simulations or developing the logic circuits of our hydrogen control system.

As a Software Engineer at AeroDelft, you will be integral to the Electronics & Software department, focusing on designing, implementing, and maintaining software systems that monitor and control the aircraft's operations. Your responsibilities will include developing software to manage power distribution, enhancing the functionality of the aircraft's dashboard, ensuring reliable ground communication, and providing software support to other departments. You will also be responsible for testing and validating software to meet industry standards and ensure safety and efficiency.

A Systems Engineer at AeroDelft is responsible for defining, analysing, and maintaining the technical coherence of the aircraft across all systems. The role focuses on requirements management, system interface definition, and analyses to ensure that each subsystem integrates seamlessly within the overall aircraft design. Systems Engineers collaborate closely with the Systems and Safety Manager and work across all technical departments to develop and refine system, subsystem, and item-level requirements, manage documentation, and support verification and qualification activities together with the Flight Testing department. The position demands attention to detail, a structured and rigorous working approach, and a strong sense of responsibility for data accuracy and documentation quality. Systems Engineers ensure that every design decision is traceable, compliant, and aligned with the high-level objectives of Project Phoenix FS.