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Sodium Test Engineer

Oklo· Engineering
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Idaho Falls, ID$90k - $150kfull-timePosted 2mo ago

About the role

Sodium Test Engineer position at Oklo in Idaho Falls, ID, focused on developing and operating test platforms for molten sodium systems as part of advanced nuclear technology development.

Responsibilities

  • Test Program Development: Translate engineering data requirements into executable tests. Prepare test plans, laboratory procedures, work instructions, equipment requirements, inspection points, and data-collection methods for materials-characterization activities.
  • Test Execution: Lead or support test setup, readiness reviews, equipment checkout, specimen installation, startup, monitoring, shutdown, and post-test activities.
  • Data Validation and Analysis: Review raw data for completeness and validity, identify anomalies, assess measurement uncertainty, calculate material properties, evaluate repeatability, and compare results with expected behavior or established requirements.
  • Technical Reporting: Prepare test reports, materials evaluations, failure-analysis reports, engineering memos, data summaries, and recommendations. Clearly document methods, assumptions, deviations, results, uncertainties, and conclusions.
  • Laboratory Development: Help establish and improve materials-laboratory capabilities, equipment-maintenance programs, calibration practices, specimen-storage methods, test templates, and safe operating procedures.

Qualifications

  • Bachelor’s degree in mechanical engineering, chemical engineering, nuclear engineering, materials engineering, or a related technical field.
  • Demonstrated knowledge of or experience with molten sodium or another molten alkali metal.
  • Experience developing test plans, test procedures, operating procedures, engineering calculations, or technical reports.
  • Ability to read and interpret piping and instrumentation diagrams, process-flow diagrams, equipment drawings, electrical schematics, instrument diagrams, and vendor documentation.
  • Ability to lift, move, and position objects weighing up to 30 pounds, with or without reasonable accommodation.

Skills

Required:Molten sodium / alkali-metal system knowledgeTest planning and documentation

Benefits

  • flexible time off
  • equity
  • bonuses
  • competitive pay
  • 401(k)
  • health insurance (with employer contribution)
  • HSA
  • FSA
  • flexible work hours
  • wellness credits
  • other benefits
Last updated Sep 11, 2026. Interested? Apply on the company site.
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About Oklo

Emission free, always on power from advanced fission power plants.

About Oklo Inc.: Oklo Inc. (Oklo) is developing advanced fission power plants to provide emission-free, reliable, and affordable energy. Oklo received a Site Use Permit from the U.S Department of Energy, has performed successful prototypic fuel fabrication, was awarded fuel material from Idaho National Laboratory, developed the first advanced fission combined license application accepted and docketed by the U.S. Nuclear Regulatory Commission, and is developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and national laboratories. Oklo has been featured in Time, Newsweek, Wall Street Journal, CNBC, Popular Mechanics, Wired, Architectural Digest, Hyperallergic, POWER Magazine, has been the subject of a Harvard Business School case, and is featured in the Oliver Stone documentary Nuclear, among other features.

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