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Core Design Engineer

Oklo· Reactor Engineering
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Hybrid (Santa Clara, CA)$130k - $190kfull-timePosted 1mo ago

About the role

Core Design Engineer to design performant and manufacturable reactor cores, perform multiphysics simulations, document designs, validate requirements, and collaborate with fabrication teams at Oklo.

Responsibilities

  • Traveling to headquarters (Santa Clara, CA) 2x per calendar quarter for team meetings, company offsite, or other business gatherings
  • Translating top-level stakeholder requirements into well-written system functional requirements
  • Modeling core performance over time through multiphysics simulations and first principles approaches
  • Documenting work using modern tools and techniques, and producing well-written technical reports
  • Collaborating cross-functionally to define performance requirements, and providing technical feedback to methods development teams

Qualifications

  • Bachelors, Masters, or PhD in nuclear engineering or a related field
  • Experience with core design from a multidisciplinary perspective
  • Experience with object-oriented programming language (e.g., Python, C++)
  • Experience with neutronic analyses
  • Experience with thermal hydraulic analysis
  • Experience with material analysis

Skills

Required:Nuclear engineering fundamentalsProgrammingNeutronics analysesThermal-hydraulicsMaterials analysis

Benefits

  • Flexible time off
  • equity
  • bonuses
  • competitive pay
  • 401(k)
  • health insurance (with employer contribution)
  • HSA
  • FSA
  • flexible work hours
  • wellness credits
  • and other benefits
Last updated Sep 18, 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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