Lead Engineer, Avionics Battery Test

relativity

Long Beach, California · Long Beach · United States

Posted Aug 4, 2026

Other
Avionics Engineering

Job description

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 Avionics team is responsible for the full lifecycle of Terran R's nervous system, designing, building, testing, installing, and operating the hardware that connects and controls every major electrical system on the vehicle and ground. The team leverages close partnership between avionics design, manufacturing, and test to enable rapid iteration and feedback loops. Engineers are deeply embedded into other functions within Relativity, working closely with propulsion, GNC, fluids, and stage engineering teams to ensure seamless integration and operation. Now is a unique time to join: you'll get to help shape Terran R's fundamental avionics architecture and be given a high degree of ownership on components that will fly.

About the Role:

As the Lead of Avionics Battery Test Engineering, you will build and lead the team responsible for all high-voltage battery testing at Relativity, spanning performance, electrical, abuse, and destructive test programs at both the pack and cell level. You will stand up this capability from the ground up: defining the test strategy, building out lab and test infrastructure, establishing safety and procedural standards, and hiring and developing a team that includes electrical/performance test engineers and abuse/destructive test engineers, as well as cell-science expertise. You will oversee HV battery bring-up, pack- and cell-level testing, structured failure analysis, and the data systems that turn test results into rapid, high-quality feedback for design teams. This role requires a strong technical foundation in battery testing and energetics, hands-on lab expertise, and experience managing test teams in fast-paced development environments.

About You:

Bachelor's degree in engineering (mechanical, electrical, chemical, aerospace, or related field)
Extensive experience in battery testing, validation, or energetics system evaluation, including hands-on execution of test programs
Strong understanding of battery physics, safety behavior, failure modes, and HV system fundamentals
Experience defining and executing performance, durability, abuse, and destructive test programs
Hands-on experience with battery test equipment, cyclers, chambers, DAQ systems, and instrumentation hardware
Experience with HV battery bring-up, sensor instrumentation, test fixture design, and test setup design
3+ years leading test engineering teams, including development of engineers' technical and leadership skills
Strong safety mindset and comfort overseeing high-energy, high-consequence test operations
Strong analytical, communication, and cross-functional collaboration skills

Nice to haves but not required:

Bachelor's degree in engineering (mechanical, electrical, chemical, aerospace, or related field)
Extensive experience in battery testing, validation, or energetics system evaluation, including hands-on execution of test programs
Strong understanding of battery physics, safety behavior, failure modes, and HV system fundamentals
Experience defining and executing performance, durability, abuse, and destructive test programs
Hands-on experience with battery test equipment, cyclers, chambers, DAQ systems, and instrumentation hardware
Experience with HV battery bring-up, sensor instrumentation, test fixture design, and test setup design
3+ years leading test engineering teams, including development of engineers' technical and leadership skills
Strong safety mindset and comfort overseeing high-energy, high-consequence test operations
Strong analytical, communication, and cross-functional collaboration skills

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:

$151,000—$227,000 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.

Please note: Relativity Space does not accept unsolicited resumes, candidate profiles, or referrals from recruitment agencies or search firms. Any unsolicited submission - via email, our website, social media, or directly to an employee - will be deemed the property of Relativity Space, and no fee will be owed absent a current, fully executed agreement with Talent Acquisition that specifically authorizes submissions for the applicable role.