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'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.

About the Team :

Relativity Space pioneered large-scale additive manufacturing with our Terran 1 rocket, the largest 3D-printed object to fly. Now a distinct business unit within Relativity, Horizon Manufacturing Technologies is advancing next-generation manufacturing for aerospace and beyond. The team operates at the frontier of manufacturing innovation, where creativity meets capability. This is an environment where cutting-edge R&D is put into production, industrializing advanced manufacturing capabilities to solve customer problems. You'll 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't be built any other way, it's high-impact work that sets the foundation for the future of advanced 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'll bring your software expertise to revolutionize the way robotics cooperate and additively manufacture here on earth and off planet.

About the Role :

As a Senior Software Engineer , you'll be responsible for shaping the core software that interfaces with our multi-robot manufacturing system. You won't be maintaining legacy code-you'll 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'll work across the stack, focusing on system orchestration, state machines, data handling, and integration with perception, motion, and thermal systems. Your work won't be abstract-you'll 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 checkboxes, 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's about building clean, modular systems in C++ and Python that serve as the foundation for all STARR software.

About You :

• You write production-quality C, C++ and Python or Rust with a strong focus on modularity, clarity, and testability
• You've 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 communicate clearly with hardware, ML, and controls teams
• You're comfortable defining structure in early-stage systems and working independently toward high standards

Nice to haves but not required :

At Relativity Space, we are committed to transparency and fairness in our compensation practices. Actual compensation will be determined based on experience, qualifications, and other job-related factors.

Compensation is only one part of our total rewards package. Relativity Space offers competitive salary and equity, a generous PTO and sick leave policy, parental leave, an annual learning and development stipend, and more! To see some of the benefits & perks we offer, please visit here.

Hiring Range :

$157,000-$200,000 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.