Senior Mechanical Engineer, Stage Propulsion

Relativity SpaceLong Beach, CA
69d$142,000 - $181,500

About The Position

At Relativity Space, we’re building rockets to serve today’s needs and tomorrow’s breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. But that’s just the start. Achieving commercial success with Terran R will unlock new opportunities to advance science, exploration, and innovation, pioneering progress that reaches beyond the known. Joining Relativity means becoming part of something where autonomy, ownership, and impact exist at every level. Here, you're not just executing tasks; you're solving problems that haven’t been solved before, helping develop a rocket, a factory, and a business from the ground up. Whether you’re in propulsion, manufacturing, software, avionics, or a corporate function, you’ll collaborate across teams, shape decisions, and see your work come to life in record time. Relativity is a place where creativity and technical rigor go hand in hand, and your voice will help define the stories we’re writing together. Now is a unique moment in time where it’s early enough to leave your mark on the product, the process, and the culture, but far enough along that Terran R is tangible and picking up momentum. The most meaningful work of your career is waiting. Join us.

Requirements

  • Bachelor’s degree in mechanical or an equivalent engineering discipline
  • 5+ years mechanical design experience
  • Experience with a commercial CAD package (NX, CREO, Solidworks)
  • Experience with GD&T
  • Project ownership experience
  • Manufacturing experience or experience interacting with vendors
  • Experience with fluid system components (fittings, seals, valves, regulators, etc.) and system testing
  • Experience with FEA tools to analyze structural margins

Responsibilities

  • Mechanical and structural implementation of the stage fluid systems
  • Fluids routing and design trade studies
  • Fluids hardware mounting structure design
  • Fluid system hardware mechanical verification analysis including both hand calcs and FEA
  • Structural design of mounting hardware for various fluid system component and routing
  • Incorporate 3D printing methods in fluid system mechanical design
  • Design for Manufacturing (DFM) and Design for Assembly (DFA)

Benefits

  • Competitive salary and equity
  • Generous PTO and sick leave policy
  • Parental leave
  • Annual learning and development stipend

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What This Job Offers

Job Type

Full-time

Career Level

Mid Level

Education Level

Bachelor's degree

Number of Employees

1,001-5,000 employees

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