Relativity Space
Senior Propulsion Test 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 - Education
- Bachelor's degree in mechanical engineering, aerospace engineering, or a related field.
- Visa sponsorship
- Candidates must clear a background check administered by the US government to obtain clearance for on-site work at the government partner location in Stennis, Mississippi.
About the job
Design, build, operate, or integrate test stands and test articles to validate Terran R components, engines, and stages and improve testing processes.
What you'll do
- Design and maintain test-stand systems, or conduct and optimize test operations.
- Manage test-article preparation, processing, repairs, work instructions, and non-conformances.
- Support testing campaigns and collaborate across teams to improve hardware flow and test processes.
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 creative solutions are needed.
- Valid driver's license to operate vehicles on the test site.
Nice to have
- Proficiency in 3D modeling and drafting, including GD&T; strong fundamentals in Thermal Fluid Systems and Structures.
- Hands-on fabrication experience, fluid-system knowledge or experience, or technical writing/documentation experience.
Pay
$124,000 — $186,000 USD (base salary)
Tools
Piping & Instruction Diagrams (P&IDs), GUIs, GD&T
Model-written summary · the original posting is authoritative