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Oklo

Sodium Test Engineer

Idaho Falls, ID$90k–$150kmidAdded today

About this role

Oklo seeks a Sodium Test Engineer to design, build, and operate experimental systems using molten sodium for advanced nuclear technology. You'll develop test programs, execute experiments, analyze data, and help establish laboratory capabilities while working in a fast-paced startup environment with up to 10% travel.

What you'll do

  • Design and develop test plans, procedures, and work instructions for molten-sodium experimental systems
  • Lead or support test setup, equipment checkout, specimen installation, startup, monitoring, and shutdown activities
  • Validate raw data for completeness and accuracy; identify anomalies and assess measurement uncertainty
  • Prepare technical reports including test results, materials evaluations, and failure analyses with clear documentation
  • Establish and improve materials-laboratory capabilities, maintenance programs, and safe operating procedures
  • Interpret piping diagrams, schematics, and equipment drawings to support system design and operation

What they're looking for

  • Molten sodium or alkali-metal system experience
  • Test plan and procedure development
  • Data analysis and validation
  • Technical reporting and documentation
  • P&ID and schematic interpretation
  • High-temperature piping and thermal systems
  • ASME standards (B31.3, BPVC, NQA-1)
  • Mechanical or nuclear engineering fundamentals
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Oklo

Oklo develops advanced fission reactor technologies aimed at commercializing clean energy solutions. The company is hiring regulatory engineers, thermal hydraulic test engineers, technical product engineers, systems engineers, and software lifecycle specialists to support reactor design, licensing, testing, and engineering operations.

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Likely interview questions

  • Describe your hands-on experience with molten sodium or alkali-metal systems—what specific aspects did you work with?
  • Walk us through how you would develop a test plan from initial engineering requirements to executed procedures.
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