Rocket Engine Flow Simulation Engineer (m/f/d)

Why us?

Rocket Engine Flow Simulation Engineer (m/f/d).

• Perform CFD simulations for liquid rocket engines with a focus on hot gas flow and cooling channel analyses
• Analyze combustion flows, conjugated heat transfer (CHT), pressure losses, and flow instabilities
• Simulate regenerative cooling systems and assess thermal loads
• Support the design of combustion chambers, nozzles, and cooling structures through numerical analysis
• Couple CFD results with thermal and structural analyses
• Validate and calibrate CFD models using experimental and test data
• Conduct trade studies to optimize performance, efficiency, and thermal margins
• Work closely with design, systems, test, and manufacturing teams
• Document models, assumptions, results, and design recommendations

Your profile

• Degree in Space Engineering, Aerospace Engineering (M.Sc.) or similar
• Minimum of 2 years of full-time experience
• Strong background in CFD, particularly for compressible flow, supersonic flow, hot gas flow conjugated heat transfer, cryogenic flow, reactive flows in rocket engines
• Profound understanding of fluid dynamics, thermodynamics, and heat transfer
• Profound understanding of cooling channel design
• Proactive thinking, high level of motivation, flexibility, and team‑working skills
• Proficiency in both German and English

Join us in shaping the future of space transportation and making a positive impact. If your profile fits our requirements, apply now by sending your complete application portfolio, including CV, certificates and a cover letter outlining your relevant experience and why you are the ideal candidate for this role.

About Us

The German aerospace start-up POLARIS Raumflugzeuge GmbH is developing a revolutionary reusable space launch and hypersonic transport system that operates like an aircraft. Based on more than 30 years of German and European spaceplane research, the development of the spaceplane AURORA began at the German Aerospace Center DLR. Aurora combines aircraft and rocket launcher technologies with a unique vehicle design, and offers a game‑changing economic viability as well as opening the door for routine low‑cost and safe access to space. In order to validate the technology and accelerate the spaceplane development, POLARIS has been developing a series of scaled flight demonstrators.