Senior Fluid System Engineer; m​/f​/d

Mission Brief

The task of a Senior Fluid System Engineer is to oversee the development of complex subsystems of the fluid system, for their initial conception, to series production and operation. This includes the management of requirements, design calculations & simulations, CAD modelling, drawing creating, manufacturing organization, acceptance & qualification test planning, test operations, test evaluation & documentation. You will be actively involved in testing and travelling.

• Fully own complex fluidic subsystems from engineering to timeline
• Define and manage the requirements of the fluid system and subcomponents
• Perform calculations and simulations of components and systems
• Work on iterative development of flight proven hardware
• Interface with many other engineering departments to work on shared systems
• Provide general engineering support and mentoring for more junior team members
• Participate in integrated, stage and flight testing operations

• M.Sc. or M.Eng. in Aerospace Engineering, Mechanical Engineering, or a related field
• Proven engineering excellence, strong problem-solving abilities, and a passion for rocket propulsion and space
• Robust fundamentals and practical experience in fluid dynamics, including modeling and analysis of complex fluidic systems (ideally in the context of rockets)
• Proficiency in Python or similar programming languages for engineering applications
• Hands‑on experience in test preparation, operation, and post-test data analysis and review
• Skilled in data analysis and preparation of technical reports
• Experience with machining processes, drawing creation, and CAD software (preferably Solid Works or Siemens NX)
• Fluent in English

• Experience in valve development for rocket engines
• Hands‑on testing experience with cryogenic fluids and oxygen compatibility
• Experience with valve qualification & certification according to regulatory standards
• Knowledge about technical drawing rules and material science
• Experience with Computation Fluid Dynamics
• Experience using ECOSIM

• Employee Participation Program:
  Share in our success through our virtual company share program
• 30 days of vacation:
  Enjoy the days off to relax and recharge
• Company pension plan:
  Secure your future with our company pension plan, featuring a 20% employer contribution after the probation period
• Subsidised lunch:
  Stay energised with delicious, subsidised lunches every day
• Public transport ticket:
  Commute with ease using a fully financed Deutschlandticket
• Sport Clubs membership:
  Stay fit with our sponsored sports club memberships (EGYM Wellpass)
• Individual learning allowance:
  Grow your skills with an individual learning budget granted after the probation period
• Childcare allowance:
  Receive a childcare allowance for your non-school-age children
• And Much More! Discover additional perks and benefits when you join our team

We are Isar Aerospace and we are at the forefront of New Space building a modern space business to enable faster, better and cheaper access to space.

Our mission is to help democratise space and use it for good in order to improve life on Earth now and for the future generations.

We are a fast‑growing company aiming to provide sustainable and environmentally friendly launch solutions for small and medium‑sized satellites and constellations into Low Earth Orbit. The company is privately funded by world‑leading technology investors with strong commitment and support and our team is made of driven and talented people with a real passion for space innovation.

We're making rockets in a way that hasn't been done before disrupting a traditional industry. If you are up for the challenge, want to work on cutting‑edge projects and be part of a team changing the world for better, come, join us and launch your career!

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