Propulsion Engineer Intern

Relativity Space Internships • Long Beach, CA

114d • $32 - $40

About The Position

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.

Requirements

• Current undergraduate or graduate student earning your degree in a science, engineering, technology, or mathematics field.
• Strong engineering fundamentals in either fluid mechanics & thermodynamics, or structural design & analysis.
• Clear evidence of ownership, problem-solving skills, and effective team collaboration from school or work experience.
• Excitement & ability to learn quickly.

Nice To Haves

• Experience applying engineering fundamentals in thermodynamics, thermal, structural, and/or fluids to solve real-world problems.
• Hands-on experience manufacturing, integrating, or testing hardware.
• Working knowledge of liquid-propellant rocket engines.
• Experience with design and analysis software.

Responsibilities

• Design, analyze, and optimize propulsion flight hardware.
• Model complex propulsion systems using computational fluid dynamics and thermal analysis.
• Create and execute engine and component hotfire test campaigns.
• Work hands-on, manufacturing and integrating propulsion hardware.

Benefits

• Competitive salary and equity
• Generous PTO and sick leave policy
• Parental leave
• Annual learning and development stipend

What This Job Offers

• Career Level: Intern
• Education Level: Bachelor's degree
• Number of Employees: 1,001-5,000 employees