Senior Nuclear Safety & Criticality Analysis Engineer

HSE Information; Idaho Falls (ID); Remote; USD 120,000 - 190,000; Full time

Benefits offered by this job

Health insurance

401(k)

Equity

Flexible work hours

Wellness credits

Job summary

Oklo Inc. in Idaho Falls is seeking a Criticality Analysis & Nuclear Safety Engineer to develop and maintain the safety basis for fuel fabrication facilities. You will perform nuclear safety analyses using MCNP, SCALE, SERPENT and support licensing activities.

You will collaborate with process, operations, licensing, and QA teams to ensure designs meet ANSI/ANS-8 standards and NRC/DOE requirements. Travel to HQ is expected.

Qualifications

• Bachelor's or higher in Nuclear Engineering or related discipline.
• Experience performing nuclear criticality or safety analyses.
• Knowledge of neutron transport methods and modeling.
• Understanding NRC/DOE nuclear safety requirements.
• Strong technical writing and cross-disciplinary collaboration.

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 and accident evaluations.
• Establish fissile material limits and administrative controls.
• Support design reviews for criticality-safe equipment layouts.
• Collaborate with process engineers on HALEU, plutonium, and uranium processes.
• Assist NRC licensing documentation and regulatory responses.
• Participate in HAZOPs, What-If analyses, and FMEAs.

Skills

Nuclear engineering

Criticality safety

Neutron transport

Technical writing

Team collaboration

Education

Bachelor's degree in Nuclear Engineering

Tools

MCNP

SCALE

SERPENT

Job description

Oklo Inc. in Idaho Falls is seeking a Criticality Analysis & Nuclear Safety Engineer to develop and maintain the safety basis for fuel fabrication facilities. You will perform nuclear safety analyses using MCNP, SCALE, SERPENT and support licensing activities.

You will collaborate with process, operations, licensing, and QA teams to ensure designs meet ANSI/ANS-8 standards and NRC/DOE requirements. Travel to HQ is expected.