relativity
Senior Mechanical Engineer
At a Glance
- Location
- United States
- Experience
- 5+ years
- Posted
- 2026-02-18T12:07:28-05:00
Key Requirements
Domain Knowledge
- Aerospace
- Engineering
- Government
- Manufacturing
Requirements
Bachelor's degree in mechanical engineering, aerospace engineering, or a related field and 5+ years of combined engineering experience is required
Prior experience in aerospace is not required
Nice to have:
Experience with FEA or CFD
Hands-on experience with metalworking, welding, hydraulics, manufacturing, etc.
Compensation & Benefits
$124,000
—
$170,500 USD
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
If you need a reasonable accommodation, please contact us at
accommodations@relativityspace.com
Responsibilities
As a Senior Mechanical Engineer at Relativity, you will be responsible for design, fabrication, and modification of test stands for our Terran 1 and Terran R engines and stages. Engineers at our Stennis facility are engaged directly with construction and maintenance activities in the field, across a variety of hours to years-long project scales. This position will be titled Senior Propulsion Test Engineer within the organization.
Design advanced propulsion test stands, including 3D modeling, fluids and structural analysis, fabrication drawings, fluids P&IDs, component lists, and detailed work instructions
Supervise the construction, commissioning, and initial operations of these facilities
Solve a variety of technical problems, across broad ranges of timeframe, complexity, cost, and long-term impact
Support operations on and perform related improvements to existing test stands
Ability to work occasional night shifts
Team
The Stennis Test team designs, builds, and operates Relativity’s propulsion and stage test stands. Team members are hands-on with large-scale, complex systems including fully integrated engines and stage assemblies, pushing hardware to the limits and directly contributing to flight readiness. The work is fast-paced and highly operational, ideal for those with backgrounds in aviation, automotive, manufacturing, offshore operations, industrial systems, construction, or adjacent industries. You’ll work in a close-knit, dynamic environment where collaboration between technicians, operators, and engineers is not only encouraged, but expected. As the company scales, the Stennis Test team becomes even more critical to unlocking our next phase of growth: proving out full-stage systems and paving the way for routine, reliable flights of Terran R.
Ownership of propulsion or structural test related projects including design, analysis, construction, and commissioning from beginning to end as well as p
roficiency in 3D modeling and drafting, including GD&T
Demonstrated engineering fundamentals in thermal, structural, and fluids analysis as well as a d
emonstrated drive to deliver on tight schedules, especially when unconventional & creative solutions are necessary