Fluid Systems Engineer

You will own the design, analysis, and validation of multiple fluid subsystems, while providing day-to-day support to test teams on component selection, integration, and troubleshooting on static and dynamic test benches., * Design and size complex cryogenic and high-pressure fluid circuits (LOx, LN , helium, nitrogen, compressed air, water, propellants, etc.).

• Develop P&IDs, functional analyses and performance models (1D, transient, thermal).
• Define and execute qualification tests for valves, regulators, filters, sensors and instrumentation.
• Support test teams on the ground, from component selection and integration to troubleshooting during hot-fire and other test campaigns.
• Contribute to safety, compliance and documentation (procedures, specs, test reports).
• This is a hybrid role: part modelling and analysis, part hands-on on the test bench during critical operations

• Master's degree (or equivalent xp) in Fluids, Energy, Mechanical, Aerospace or Thermal Engineering plus 3-7 years of experience.
• Solid knowledge in fluid mechanics and thermodynamics, ideally with exposure to cryogenic and/or high-pressure systems.
• Experience in network sizing (compressible/incompressible flows) and understanding of valves, regulators, fittings and instrumentation.
• Modelling/simulation skills (e.g. Python, ESPSS/EcosimPro, Matlab/Simscape or similar).
• Comfortable working in a test environment: procedures, safety, rigor, and fast feedback cycles.
• Bonus points if you have experience with rocket test facilities, pressure equipment standards, or cryogenic propellants!