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Fluid Systems Engineer — Nuclear Microreactor Tech

Job in El Segundo, Los Angeles County, California, 90245, USA
Listing for: Radiant
Full Time position
Listed on 2026-10-18
Job specializations:
  • Engineering
    Systems Engineer, Mechanical Engineer, Process Engineer
Salary/Wage Range or Industry Benchmark: 110000 - 165000 USD Yearly USD 110000.00 165000.00 YEAR
Job Description & How to Apply Below

Radiant is seeking a highly motivated Mechanical Engineer, Fluids Systems to own critical Kaleidos fluid systems from preliminary design through build and production. You will perform thermal hydraulics analysis, select components, and manage manufacturing and testing to enable the first new commercial reactor design in over 50 years by 2026.

You will work onsite at El Segundo HQ, collaborating with cross-disciplinary teams, and contribute to trade studies, BOM creation, supplier development,

We would love to welcome a new Fluid Systems Engineer — Nuclear Microreactor Tech to our team in El Segundo, CA, United States.

The following opening is for a Fluid Systems Engineer — Nuclear Microreactor Tech with Radiant.

Our team is growing, and we are hiring a Fluid Systems Engineer — Nuclear Microreactor Tech in El Segundo, CA, United States.

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