AI Software Engineer II

Relativity Space•Long Beach, CA

About The Position

Relativity Space is building rockets to serve today’s needs and tomorrow’s breakthroughs. The 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 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. The Terrestrial Software team is building the foundation for an automated rocket factory and integrated launch platform. Their mission is to automate and streamline workflows across the entire lifecycle of Terran R, from raw material intake to launch operations and eventually manufacturing on Mars. Today, that means partnering directly with teams across design, materials, manufacturing, and test and launch to design, implement, and deploy end-user enterprise-wide applications, industrial automation, data analytics infrastructure, and next-generation AI to solve real problems and accelerate progress. Long term, the team is laying the groundwork for a modular, scalable software platform that can power highly autonomous operations on Earth and beyond. This is a team for builders and thinkers who thrive on cross-functional impact and want to shape the digital backbone of our future in space. The AI, Data and Platform Engineering team leads Relativity's initiative to make AI a core part of how we design, build, and test rocket hardware. We build the applications, agents, data foundations, and platform that put AI in the hands of engineers and operators across the company. We are a small, high-ownership team that ships quickly, works directly with users, and treats reliability and evaluation as first-class parts of every AI product. You will help build AI systems used by engineers and operators across the company, working across the full software development life cycle: concept, design, implementation, and ongoing iteration. Build AI-powered applications and agents on top of foundation models, and make them reliable in production. Follow agile development practices and ship quality software that is continuously integrated and deployed. Solve complex problems with simple solutions. Work directly with users and stakeholder teams to define requirements, implement solutions, and iterate.

Requirements

Bachelor's degree or higher in Computer Science or a related engineering field (Computer, Software, Electrical, Aerospace)
3 to 5 years of experience building, shipping, and iterating on applications and services
Practical experience building AI features with large language models, such as agents, retrieval-augmented generation, tool use, or evaluation, and shipping them to real users
Hands-on experience building with large language models, whether through coursework, projects, or self-directed work
Experience designing in collaboration with non-software stakeholders
Proficient in the languages and tools you love most, and willing to learn new ones

Nice To Haves

Experience designing and scaling AI or service architectures that support high-performance, user-facing applications
Experience building evaluation and observability systems that keep AI reliable in production
Background in data engineering, applied machine learning, or building and maintaining knowledge bases and ontologies
Experience turning research into working prototypes and reading current AI literature to inform design choices
Experience developing, debugging, and shipping software products on large code bases that span platforms and tools
Exposure to manufacturing, hardware, robotics, or other physical-world domains

Responsibilities

Build AI-powered applications and agents on top of foundation models, and make them reliable in production.
Follow agile development practices and ship quality software that is continuously integrated and deployed.
Solve complex problems with simple solutions.
Work directly with users and stakeholder teams to define requirements, implement solutions, and iterate.