Fuel Fabrication Criticality Analysis & Nuclear Safety Engineer

The role

You will develop and maintain the nuclear criticality safety basis and nuclear safety analyses for advanced nuclear fuel fabrication facilities. This includes performing computational analyses and establishing controls for fissile material operations.

What you will do

• Develop Criticality Safety Evaluations (CSEs) and supporting calculations.
• Perform criticality analyses using MCNP, SCALE, SERPENT, or equivalent software.
• Develop nuclear safety analyses including hazard evaluations and accident analyses.
• Establish fissile material limits, mass limits, geometry controls, moderation controls, and administrative controls.
• Support facility design reviews to ensure criticality-safe equipment layouts and process designs.
• Work with process engineers developing HALEU, plutonium, and uranium metal processes.
• Support NRC licensing documentation and responses to regulatory requests.
• Participate in HAZOPs, What-If analyses, FMEAs, and design reviews.
• Develop criticality alarm system requirements and safety basis documentation.
• Support startup testing, operational readiness reviews, and commissioning.

Required qualifications

• Bachelor's or higher degree in Nuclear Engineering or closely related discipline.
• Experience performing nuclear criticality or safety analyses.
• Knowledge of neutron transport methods and computational modeling.
• Understanding of NRC or DOE nuclear safety requirements.
• Strong technical writing and communication skills.
• Ability to work effectively within multidisciplinary engineering teams.
• 3–10+ years of experience performing nuclear criticality safety or nuclear safety analyses in fuel cycle, reactor, DOE, national laboratory, or other highly regulated nuclear environments.

Nice to have

• Graduate degree in Nuclear Engineering.
• Experience supporting HALEU, plutonium, or uranium fuel fabrication facilities.
• Experience preparing NRC licensing analyses.
• Knowledge of DOE-STD-3007 and nuclear safety basis methodologies.
• Experience with HAZOPs, accident analysis, or probabilistic risk assessment.
• Familiarity with NQA-1 quality programs.

Benefits

• Flexible time off
• Equity
• Bonuses
• Competitive pay
• 401(k)
• Health insurance with employer contribution
• HSA
• FSA
• Flexible work hours
• Wellness credits

Before you apply

• Only applicants who meet the definition of a U.S. person under applicable laws may be eligible.
• Employment may be contingent upon successful completion of a drug screening.
• Employees may be subject to drug testing at any time.

About the company

Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale. The company is also establishing a domestic supply chain for critical radioisotopes and advancing nuclear fuel recycling.