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Space Mechanical Design Engineering Intern - Summer 2027

Antares 🇺🇸 Los Angeles, California, United States of America

Full-time Entry Level

The intern will contribute to the mechanical design and development of reactor and power systems, focusing on space applications and hardware integration. Responsibilities include designing space radiator hardware, performing microgrid analyses, and developing concepts of operation for various deployment scenarios.

Responsibilities

  • The intern will contribute to the mechanical design and development of reactor and power systems, focusing on space applications and hardware integration. Responsibilities include designing space radiator hardware, performing microgrid analyses, and developing concepts of operation for various deployment scenarios.

Requirements

  • Candidates must be enrolled in at least a bachelor's degree program, entering their Junior or Senior year. Applicants must possess prior internship or significant project/research experience and meet ITAR export regulation requirements.

Benefits

  • Relocation stipend
  • Housing stipend

Key Skills

Mechanical design Thermal analysis CAD modeling Finite element analysis Space radiator design Microgrid analysis Concept of operations development Hardware integration ITAR compliance Project documentation Team collaboration Problem solving Technical research Engineering calculations Rapid prototyping

About Antares

Energy abundance unlocks progress. It powers missions, grows economies, strengthens national security, and expands what’s possible on Earth and beyond. But in the places where power is most critical, it’s often the hardest to deliver. That’s the problem we’re solving. At Antares, we’re building compact nuclear microreactors to deliver reliable, mobile energy where it’s needed most: remote military bases, austere industrial sites, and, one day, deep space and underwater missions. The U.S. nuclear industry hasn’t seen true momentum in decades. We’re moving it forward with urgency, humility, and a commitment to building what’s needed now. Our team includes engineers and operators from SpaceX, Relativity Space, Ursa Major, the White House, MIT, Rigetti Computing, and the U.S. Air Force. Backed by over $600M from top-tier investors, we’re focused on shipping hardware, not hypotheticals.

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