Engines - Turbomachinery Engineer

At Stoke, we believe that a thriving space economy leads to a vibrant, sustainable, and equitable future here on Earth. That is why we are building our fully and rapidly reusable vehicle, Nova. It is designed to fly daily and solve the core challenges of space transportation – it reduces cost, increases availability, and enhances reliability. By radically lowering the cost and increasing the cadence of launch, we’re able to create a truly scalable space industry.

Our team is mission-driven, collaborative, and empowered with ownership of their work. If you want to work with some of the most dedicated and talented people on Earth, come join us.

Fully reusable launch vehicles are the key to seamlessly connecting Earth and space. As a Turbo machinery Engineer at Stoke, you will have extreme ownership over all aspects of turbo machinery design, analysis, manufacturing, build, testing, and validation for advanced reusable rocket engines. You will seek out state-of-the-art design and manufacturing techniques and tools to solve challenging turbo machinery problems, and you will continuously iterate and improve your designs.

You’ll also work on rapidly reusable rocket engines meant to be flown daily. You must be ready to stay focused, move fast, self-direct, and learn on the fly.

• Design, build, and test turbopumps for liquid rocket engines
• Own turbo machinery design (CAD), drawings, and manufacturing plans
• Perform hydrodynamic and aerodynamic sizing and flowpath design and analysis work for inducers, impellers, diffusers, nozzles, turbines, and other turbo machinery
• Perform hydrostatic bearing sizing, performance trending, and coatings development for turbopump bearings
• Evaluate axial thrust balance during transients and steady-state operating points.
• Perform tolerance stackups, own build books, and ensure as-built pumps meet design intent.
• Own test verification activities to ensure accomplished tests meet requirements
• Support turbopump testing, data review, inspections, and go/no-go's
• Own performance trending of various components (inducers, impellers, turbines, axial/ radial bearing capacities, cavitation, etc)
• Own design improvement plans for turbopump components including manufacturing improvements to reduce cost and lead time
• Use/develop high-speed data tools to review for turbopump vibration and rotor-dynamics performance
• Resolve hardware build non-conformances thru resolution
• Conduct fault tree investigations and root cause analysis

• Demonstrated experience as an RE who takes extreme ownership of their product
• Demonstrated ability to manage numerous hardware workflows to meet required delivery dates
• Bachelor’s degree in mechanical or aerospace engineering, or similar
• 2+ years of experience in design, build, and testing of rocket engine turbopumps or related turbo machinery experience
• Understanding of hydrodynamic/aerodynamic design and fundamentals of turbo machinery
• Extensive experience using CAD tools and configuration management (Siemens NX and Teamcenter preferred).
• Experience with mechanical design including machined parts, additive parts, weldments, fasteners, seals, and rotating assemblies.
• Experience in rocket engine turbo machinery axial/radial tolerance stackups, and material selection
• Experience in the design, build, and testing of inducers, impellers, volutes, turbines, nozzles, shafts, bearings, and seals.
• Experience with secondary flow and axial thrust balance modeling
• Proficiency in heat transfer, compressible and in compressible flow, and cryogenics
• Excellent written and verbal communication
• Willing to relocate to Seattle, WA

• Equity – We know that our employees are the reason we succeed. To give everyone a stake in our future, we are pleased to offer equity in the form of stock options to all regular, full-time employees.
• Comprehensive benefits program including subsidized medical, dental, and vision insurance
• Company-paid life and disability insurance
• 401(k) plan with employer match
• 4 weeks’ Paid Time Off
• Holidays – 10 days (including an end-of-year closure)
• Paid Family/Parental Leave
• On-site gym or monthly wellness stipend (depending on location)
• Dog friendly offices!