Launch Mechanical Engineer II

Relativity Space•Long Beach, CA

About The Position

Relativity Space is building rockets to serve today’s needs and tomorrow’s breakthroughs. Their Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. 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 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 being written together. 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. The Launch team operates at the intersection of every major aspect of Terran R, from stages and payloads to ground systems, launch, landing, and refurbishment. The Cape is the only place where you see it all come together, offering a level of exposure and responsibility unmatched elsewhere in the program. This is where first flights happen, where history is built on top of history, and where the scale of what's underway is unlike anything in modern aerospace. The mission stays the same, but the work evolves with every milestone: from first launch to reuse, high-cadence operations, and beyond. If you're looking to define what's next in space launch and write a new playbook, not just repeat what’s already been done, this is where it happens.

Requirements

Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, or a closely related field.
A minimum of two (2) years of professional engineering experience in structural systems, mechanical design, fluid power systems, or related areas.
Solid understanding of mechanical engineering principles, including structural analysis and fluid systems design.
Proven ability to deliver high-quality results on schedule, including under challenging or ambiguous conditions.

Nice To Haves

Experience with launch vehicle interface mechanisms, support tooling, or similar systems.
Familiarity with applicable NASA, DoD, Space Force, or related industry standards.
Working knowledge of structural materials, manufacturing methods, and fabrication processes.
Experience designing complex fluid systems (e.g., high-pressure gas, cryogenic, flammable fluids, or hydraulics).

Responsibilities

Lead mechanical design projects from concept through implementation using sound engineering principles.
Coordinate technical requirements with vehicle and ground support engineering teams.
Develop detailed 3D CAD models, 2D mechanical drawings, fluid system schematics, and electrical system schematics.
Perform structural, dynamic, and system performance analyses using hand calculations and finite element methods (FEM).
Present design concepts and project updates to engineering and cross-functional teams, emphasizing functionality, feasibility, and safety.