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Senior Reactor Engineer

RadiantEl Segundo, CA

$150,025 – $211,838 • Offers Equity

Posted Oct 15, 2026

What you’d do

Lead testing and verification of components, mechanisms, and subsystems for the Kaleidos microreactor, from test planning through execution and data analysis. Work with nuclear, mechanical, thermal, and controls teams to confirm hardware meets functional, performance, and safety requirements. Found on the employer's careers page on Oct 18, 2026. Apply through the link.

You’ll need

  • Bachelor's in nuclear or mechanical engineering or related
  • 5+ years in reactor engineering or hardware testing
  • Test planning and design verification
  • Data analysis and technical review

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