Fuel Fabrication Criticality Analysis & Nuclear Safety Engineer

Oklo•Idaho Falls, ID

1d•$120,000 - $190,000

About The Position

As a Criticality Analysis & Nuclear Safety Engineer on Oklo's Fuel Fabrication team, you will develop and maintain the nuclear criticality safety basis and nuclear safety analyses for the design, licensing, construction, commissioning, and operation of advanced nuclear fuel fabrication facilities. The role includes performing computational analyses, establishing engineered and administrative controls for fissile material operations, and collaborating with process, mechanical, operations, licensing, and quality teams to ensure facility designs meet nuclear safety requirements. This is a cross-functional role that values technical excellence and collaboration. The position calls for 3–10+ years of nuclear criticality safety or nuclear safety analysis experience in fuel cycle, reactor, DOE, national laboratory, or other highly regulated nuclear environments. Oklo describes its desired colleague as self-motivated, collaborative, communicative, creative, detail-oriented, and comfortable in a fast-paced startup environment. Remote employees are required to travel to Oklo headquarters in Santa Clara, California, twice a quarter annually based on business or team needs. Employees must also work in person at headquarters during their first two weeks of onboarding. Salary is $120,000–$190,000. Employment may be contingent on a successful drug screening, and employees may be subject to drug testing in accordance with company policy and applicable laws. The role may involve access to information subject to U.S. export control laws; only applicants who meet the applicable definition of a U.S. person may be eligible.

Requirements

Bachelor's or higher degree in Nuclear Engineering or a 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.
Strong understanding of neutron physics and criticality safety principles.
Experience applying ANSI/ANS-8 standards.
Proficiency with MCNP, SCALE, SERPENT, or equivalent modeling software.
Ability to evaluate complex nuclear process systems and identify credible accident scenarios.
Comfort working across engineering, operations, licensing, and quality organizations.
U.S. person status as defined under applicable laws may be required for eligibility because the position may involve information subject to U.S. export control laws.

Nice To Haves

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.

Responsibilities

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.
Investigate abnormal conditions and recommend corrective actions.
Maintain compliance with ANSI/ANS-8 standards and applicable NRC/DOE requirements.