Turbopump Design Engineer (m/f/d)

POLARIS Spaceplanes; Bremen; Vor Ort; EUR 60.000 - 100.000; Vollzeit

Benefits dieser Stelle

Permanent contract

International team

Flat hierarchies

Flexible working hours

EGYM Wellpass

Corporate Benefits discounts

Opportunity to shape the company

Zusammenfassung

POLARIS Raumflugzeuge GmbH in Bremen seeks a Turbopump Design Engineer (m/f/d) to design and validate turbopumps for LOX/RP1 rocket engines. You will perform rotor dynamics, fluid and thermal analyses and use CFD/FEA tools for performance optimization.

The role requires a MSc in Space/Aerospace engineering, 2+ years of experience, and fluency in German and English. On-site work with an international team offering long-term prospects and competitive compensation.

Qualifikationen

• M.Sc. in Space/Aerospace Engineering or equivalent.
• Minimum 2 years of full-time experience in turbomachinery.
• Deep knowledge of turbomachinery and propulsion integration.
• Strong physics, fluid dynamics, and materials understanding.
• Cryogenic fluids experience (LOX) and high‑T/high‑P environments.

Aufgaben

• Design and develop turbopumps for LOX/RP1 rocket engines.
• Perform rotor dynamics, fluid dynamics, thermal and structural analyses.
• Use CFD, FEA and 0D/1D modelling for performance optimization.
• Work on shafts, seals, bearings and lubrication systems.
• Collaborate with propulsion, mechanical and materials teams to integrate systems.
• Define and verify performance parameters via simulation and testing.
• Oversee testing and validation to ensure aerospace standards.

Kenntnisse

Turbomachinery

Cryogenic fluids understanding

Fluid dynamics

Physics

Team collaboration

German language

English language

Ausbildung

M.Sc. in Space Engineering or Aerospace Engineering

Tools

Creo

ANSYS Fluent

Jobbeschreibung

Why us?

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 Turbopump Design Engineer (m/f/d).

Join our dynamic and fast-growing startup and be part of our exciting journey to revolutionize space transportation and hypersonics. We are a passionate team dedicated to pushing boundaries, fostering innovation, and creating impactful solutions that make a difference.

Depending on the area of responsibility, professional experience and specialist background, the gross annual salary ranges from EUR 60.000,00 to EUR 100.000,00.

The exact remuneration will be determined during the application process.

Your mission

• Design and develop turbopumps for LOX/RP1 rocket engines
• Perform rotor dynamic, fluid dynamic, thermal, and structural analyses of turbopump components
• Use CFD, FEA, and 0D/1D system modelling tools for performance prediction and optimization
• Work on shaft seals, bearings, and lubrication systems
• Collaborate with cross-functional teams, including propulsion, mechanical, and materials engineers, to integrate turbopump systems into the overall rocket engine design
• Define and verify key performance parameters, such as flow rates, pressures, and efficiency, through simulation and testing
• Close collaboration with analysis, manufacturing, procurement, quality, and suppliers
• Oversee the testing and validation of turbopump components and systems to ensure compliance with aerospace standards

Your profile

• Degree in Space Engineering, Aerospace Engineering (M.Sc.) or similar
• Minimum of 2 years of full-time experience
• Extensive knowledge in turbomachinery, including pumps, turbines and their integration
• Profound understanding of physics, fluid dynamics, manufacturing processes, rocket engine/propulsion systems
• Deep understanding of cryogenic fluids (e.g., LOX) and materials suitable for high-pressure, high-temperature environments.
• Proficiency with Creo and ANSYS Fluent for design and verification
• 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

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 115 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.