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Space Mechanical Design Engineering Intern - Summer 2027

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

Contract Intern

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 radiator hardware, developing manufacturing approaches, and performing system-level analyses for reactor deployment.

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 radiator hardware, developing manufacturing approaches, and performing system-level analyses for reactor deployment.

Requirements

  • Candidates must be enrolled in at least a bachelor's degree program, entering their Junior or Senior year. Applicants are required to have prior internship experience or significant project team, laboratory, or research experience.

Benefits

  • Relocation stipend
  • Housing stipend

Key Skills

Mechanical design Radiator hardware design Manufacturing approach development System‑level analysis Space reactor systems CAD modeling Thermal analysis Materials selection Project documentation Team collaboration Problem solving Research experience Internship experience

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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