Senior Software Engineer, Embedded

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:

The Vehicle Software team is responsible for the software on all Avionics boxes on the vehicle. This spans the operating system image, the applications running on those boxes, and software configuration and deployment. We are also responsible for the test infrastructure required to validate the software, such as the HITL and HOOTL test environments. Finally, our team supports rocket manufacturing and system test efforts starting with Avionics box testing, engine testing, stage integration and checkouts, stage qualification/hot fires, and concluding with stacked vehicle testing and launch.

About the Role:

• Design, implement, and maintain embedded software in C++ for microcontrollers in rocket systems
• Develop software on Real-Time Operating Systems (RTOS)
• Integrate with low-level hardware interfaces: SPI, I2C, UART, GPIO, interrupts, etc.
• Implement communication protocols such as UDP, multicast, Ethernet
• Write clean, efficient, and testable code for real-time and safety-critical applications
• Collaborate with hardware, systems, and test engineers to support full product development lifecycle
• Participate in code reviews, system design discussions, and debugging sessions
• Contribute to continuous improvement of our embedded software architecture and tools

About You:

• Bachelor's or Master's degree in Computer Engineering, Electrical Engineering, or related field
• 4+ years of experience developing embedded software with C or C++
• Experience with RTOS environments (FreeRTOS, ThreadX, VxWorks, or equivalent)
• Solid understanding of microcontroller architectures and peripheral interfaces
• Strong debugging and optimization skills for embedded systems
• Comfortable working with hardware schematics, and test equipment (logic analyzers, power supplies, oscilloscopes
• Experience with Git, CI/CD pipelines, and modern software development practices

Nice to haves but not required:

• Experience with space-rated systems or launch vehicles
• Familiarity with Python or scripting tools for automation and testing
• Proficiency with networking protocols such as UDP, Ethernet, and multicast
• Experience developing motor control software for brushless motors including FOC (Field-Oriented Control)
• Understanding of control theory, especially PID tuning in embedded environments

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:

$165,000-$211,000 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.