Relativity Space
Senior Mechanical Engineer
$124K–$186K
Stennis Space Center, Mississippi +1 · Senior · Full-time · Posted Feb 18, 2026
- Location
- Stennis Space Center, Mississippi
Stennis Space Center, Mississippi, United States - Experience
- No aerospace experience required.
- Education
- Bachelor's degree in mechanical engineering, aerospace engineering, or a related field.
About the job
Designs, builds, operates, or integrates test stands and test articles for Terran R propulsion systems, engines, and stages to validate designs and improve testing processes.
What you'll do
- Design and maintain fluid, structural, and mechanical test systems, or operate test stands and conduct test campaigns.
- Prepare, inspect, repair, and manage test articles; write work instructions and coordinate with technicians and quality inspectors.
- Improve test procedures, automation, data review, and hardware flow; support test-stand fabrication, activation, and maintenance.
What they ask for
- Bachelor's degree in mechanical engineering, aerospace engineering, or a related field.
- Demonstrated ability to safely operate common power tools.
- Ability to deliver on tight schedules, including when unconventional and creative solutions are necessary.
- Valid driver's license to operate vehicles on the test site.
Nice to have
- Proficiency in 3D modeling and drafting, including GD&T.
- Strong engineering fundamentals in Thermal Fluid Systems and Structures; hands-on fabrication, fluid systems, or technical documentation experience.
Pay
$124,000 — $186,000 USD (base salary)
Tools
Piping & Instruction Diagrams (P&IDs), 3D modeling, GUIs, automation, GD&T
Model-written summary · the original posting is authoritative