Senior Avionics Mechanical Design Engineer

Relativity Space • Long Beach, CA

67d • $138,000 - $178,000

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

• Minimum of 5+ years of experience in a full cycle mechanical design engineering role.
• Bachelor’s degree in mechanical engineering, aerospace engineering, or related field.
• Experience with 3D computer-aided design (CAD) software.
• Experience with structural and thermal analysis.
• Demonstrated project ownership and accountability with complex, multi-disciplinary technical projects.

Nice To Haves

• Experience with the design of electronic assemblies, batteries, and/or vibration isolation systems.
• Experience with finite element analysis methods.
• Applied knowledge of geometric dimensioning and tolerancing (GD&T).
• Proficient with NX/Teamcenter CAD package.

Responsibilities

• Own the design, analysis, and test/validation of mechanical products within the Terran R avionics system.
• Collaborate with electrical engineers to design robust, high-performance printed circuit board assemblies.
• Perform preliminary sizing for static and dynamic loads and thermal environments.
• Utilize 3D modeling and 2D drafting packages to deliver detailed designs with considerations for production and test.
• Validate designs for flight through rapid prototyping, analysis, and test campaigns.

Benefits

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

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