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

Unternehmen : Polaris Raumflugzeuge Gmbh

Auftragstyp : Vollzeit

Bremen, Germany

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

Why us?

POLARIS Raumflugzeuge GmbH develops innovative transportation systems that redefine access to space for payloads and passengers. We are continuing to expand our team and are looking to fill the position of a Rocket Engine Flow Simulation Engineer (m/f/d).

Your mission

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 recommendation

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

What we offer

Long-term prospects with a permanent employment contract
Being part of an international, highly motivated team
Flat hierarchies and short decision-making processes
Flexible working hours
Use of our company fitness program with EGYM Wellpass
Take benefit of attractive employee discounts through Corporate Benefits
The opportunity to contribute your ideas and actively shape the company

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

Our mission is to pioneer a new era of space transportation by flying to space and back like an aircraft — taking off and landing at airports, and reusing our spaceplanes for hundreds of missions. We combine unprecedented cost efficiency with unique flexibility and safety, enabling breakthrough advances in both space transportation and hypersonic flight. This vision is currently pursued by almost 80 employees every day.

At POLARIS we value on-site collaboration, so we generally do not offer home office. Please apply only if you feel comfortable with this working model – it saves valuable time for everyone involved.

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