Soma Capital Portfolio Jobs

Propulsion Design Engineer

STOKE Space Technologies

STOKE Space Technologies

Kent, WA, USA
Posted on Friday, December 16, 2022

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.

*Please note: we will not be actively interviewing for this role until June 2023*


Reusable systems are the key to seamlessly connecting Earth and space. As a responsible engineer at an early-stage start-up, you will have extreme ownership over all aspects of a components design, analysis, manufacturing, testing, and validation for an advanced reusable rocket engine (components like thrust chambers, reentry heat shields, injectors, valves, turbomachinery, actuators, ignitors, etc). You will be a key member of engines development team working through all phases of the product lifecycle. You will seek out state-of-the-art design and manufacturing techniques and tools to solve challenging problems, and you will continuously iterate and improve your designs. You must be ready to stay focused, move fast, self-direct, and learn on the fly.


  • Exceptional command of fundamentals
  • Experience with detailed mechanical design including machined parts, additive parts, weldments, fasteners, seals, and translating/rotating assemblies.
  • Experience in designing, analyzing, and testing rocket engine components; thrust chambers, regenerative cooling channels and heatshields, injectors, valves, turbomachinery, actuators, ignitors, etc.
  • Experience in GD&T, axial/radial tolerance stackups, and material selections
  • Experience post-processing test data to evaluate component performance and health
  • Proficiency in heat transfer, compressible and incompressible flow, and cryogenics
  • Proficiency with CAD tools (Siemens NX preferred)
  • 5+ years of experience in design, build, and testing of rocket engine components
  • Ability to lead
  • Ability to follow
  • Excellent written and verbal communication
  • Bachelor’s degree in mechanical or aerospace engineering, or similar
  • Willing to relocate to Seattle, WA


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


  • Level 1 Range: $77,400.00 - $116,000
  • Level 2 Range: $96,700.00 - $145,100
  • Level 3 Range: $120,900 - $181,300
  • Level 4 Range: $147,700 - $221,600

Our job posts are intentionally written to attract a wide variety of experience levels, and we make decisions about the right fit on a per-candidate basis.

Your actual level and base salary will be decided based on your specific experience and skill level.

ITAR Requirements

To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.