Reusable Upper Stage Fluids Designer

Kent, Washington, United States


Full Time

6 months ago

Job description

A thriving economy in space is needed to make life on Earth more vibrant, sustainable, and equitable. Space technology will enable global access to information, solutions to climate change, answers to global food security, products that transform healthcare, clean energy production, and more. Today, rocket launch options are slow, expensive, and unreliable. Stoke is building the world’s most efficient fully and rapidly reusable rocket designed to fly daily that will radically increase access to space and open up the space economy to safeguard our precious home, Earth.  


Fully reusable launch vehicles are the key to seamlessly connecting Earth and space. As a reusable upper stage Fluids Designer, you will have extreme ownership over all aspects of the vehicle fluid systems design, layout, assembly, test, launch, and refurbishment for a 100% reusable rocket designed to fly daily. You will support the upper stage Fluids Lead for the entire vehicle and engines fluids system. You will work closely with the rest of the design, manufacturing, and operations teams through all phases of the product lifecycle. You must be ready to stay focused, move fast, self-direct, and learn on the fly.


  • Support the reusable upper stage fluids architecture, conceptual design, requirements, and concept of operations.
  • Develop system sizing and analysis models to drive hardware design and verify against requirements.
  • Develop and maintain system interfaces with respective vehicle subsystems.
  • Own the design and CAD modeling of vehicle fluid system hardware including propellant fill/drain lines, engine feedlines, pneumatics, instrumentation, tubing, pressurization systems, diffusers, valves, heat exchangers, reaction control systems, cavity purges, vents, propellant estimation systems, quick disconnects, pogo and anti-geyser systems, and secondary support structure.
  • Perform engineering stress analysis of vehicle fluid system hardware.
  • Support procurement, manufacturing, integrated vehicle assembly, and testing of vehicle fluid system hardware.


  • 2+ years of experience in design, build, and testing of vehicle fluids systems, valves, or engines.
  • Extensive experience with mechanical design, CAD software, engineering drawings, and configuration management (Siemens NX and Teamcenter preferred).
  • Extensive experience with stress analysis hand calculations and finite element analysis (Ansys preferred).
  • Exceptional command of fundamentals, including compressible flow, thermodynamics, control systems, cryogenics, and instrumentation
  • Strong knowledge of systems engineering fundamentals, and ability to apply that knowledge in practical ways to a fast-paced development program.
  • Proficiency with operation and testing of pneumatic, hydraulic, and cryogenic systems.
  • Proficiency with aerospace standard fasteners, seals, tubing, fittings, and commercial off the shelf hardware.
  • Proficiency with fluid analysis tools (Siemens AMESim, Thermal Desktop, Python, EES, REFPROP, or equivalent)
  • Hands on experience performing fabrication and assembly of pressurized hardware.
  • Ability to lead
  • Ability to follow
  • Excellent written and verbal communication
  • Bachelor’s degree in mechanical or aerospace engineering, or similar
  • Work in person in Kent, Washington


  • Medical, dental, vision and basic life insurance
  • 401(k)
  • Paid time off
  • Flexible scheduling
  • Equity


Target levels:

  • Level 1 Range: $120,900 - $181,300
  • Level 2 Range: $147,700 - $221,600

Equal Opportunity 

The Company is an Equal Opportunity Employer, including with respect to disability and veteran status.  It is committed to compliance with all equal opportunity laws, including the Immigration and Nationality Act (INA) and Title VII.   It does not discriminate on the basis of nationality, race, citizenship, immigration status, or any other protected class when it comes to employment practices, including hiring. 

Employment at the Company is contingent upon satisfactory completion of reference and background checks, and on your ability to prove your identity and authorization to work in the U.S. for the Company.  Employees must comply with the United States Citizenship and Immigration Services employment verification requirements, and, therefore, they must complete an Employment Eligibility Verification Form I-9 at the start of employment and re-verify authorization to work periodically.

Separate from this I-9 process, this position entails access to certain technology and technical data that is restricted under U.S. export control laws and regulations.  Employment or continued employment may be conditioned on your legal authorization to work with or have access to export control materials as necessary to perform your job.


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