Senior Software Engineer

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  not just executing tasks; you  solving problems that haven  been solved before, helping develop a rocket, a factory, and a business from the ground up. Whether you  in propulsion, manufacturing, software, avionics, or a corporate function, you  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  writing together. Now is a unique moment in time where it  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.

The Additive Technology team operates at the frontier of research and development, where creativity meets capability. This is an R&D-driven environment where problems are open-ended and solutions are yours to define. You  work alongside welders, robotics engineers, data scientists, and systems engineers at the intersection of hardware and software, creating an end-to-end additive manufacturing platform that serves a wide variety of applications.

From exploring new materials to unlocking faster print speeds, to designing complex, organic geometries that can  be built any other way, it  high-impact work that sets the foundation for the future of additive manufacturing.

The Robotics Team at Relativity Space is responsible for building and refining the hardware that powers our autonomous systems. From advanced perception and robotics for manufacturing and additive processes to specialized robots that support development and deployment, our R&D Software engineers work in close collaboration with hardware and automation to develop cutting-edge technologies that push the boundaries of space exploration and industrial manufacturing.

As a key member of the team, you  bring your software expertise to revolutionize the way robotics cooperate and additively manufacture here on earth and off planet.

As a Senior Software Engineer
, you  be responsible for shaping the core software that interfaces with our multi-robot manufacturing system. You won  be maintaining legacy code—you  be defining patterns, building reusable libraries, and building out and transforming prototypes into production-grade systems that control and coordinate real-world robotics hardware. You  work across the stack, focusing on system orchestration, state machines, data handling, and integration with perception, motion, and thermal systems.

Your work won  be abstract—you  write the software that controls a system of robots merging perception, automation and additive manufacturing. Test writing and debugging are core to this role—not just check boxes, but crafts. You know how to build fast feedback into your workflow and how to isolate, validate, and debug complex real-world behavior. This is not a front-end or dev tools role.

It  about building clean, modular systems in C++ and Python that serve as the foundation for all STARR software.

• You write production-quality C, C++ and Python or Rust with a strong focus on modularity, clarity, and testability
• You  worked on robotics, embedded systems, perception pipelines, or similar real-world platforms
• You know how to design and implement robust state machines and system-level orchestration
• You see around corners—your experience helps you anticipate integration risks and failure modes early
• You treat debugging and test building as first-class engineering problems
• You collaborate well across disciplines and…