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Associate Criticality Safety Engineer

Livermore, CA, us💼 Full-time💰 $121,830–$121,830🗓 2026-06-23 → 2026-07-31

Core

Design, development, and testing of nuclear equipment and systems for fissionable materials operations at Lawrence Livermore National Laboratory (LLNL) supporting the DOE Nuclear Criticality Safety Program.

Role type

Associate Criticality Safety Engineer (SES.1/SES.2)

Builds

Nuclear equipment and systems for DOE operations

Domain

Nuclear engineering / Criticality safety

Deliverable

production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work

Required skills

Criticality safety evaluations, DOE-STD-3007 compliance, radiation transport software (COG, MCNP, GEANT, SCALE), technical/scientific assignments, data analysis, safety procedure review, walk-through inspections, training delivery

Preferred skills

Fissile material handling, computer-based design and analysis of experiments, peer-reviewed publications, external stakeholder interaction, advanced verbal and written skills

Technologies

COG, MCNP, GEANT, SCALE

Responsibilities

Assist with criticality safety evaluations and review of equipment/operating procedures, perform walk-through inspections and annual reviews, conduct training courses, prepare technical documents and calculations, serve as principal investigator for benchmark experiments (SES.2), present research results at conferences

Seniority

Associate (SES.1) to Senior (SES.2), hands-on IC with potential for technical lead responsibilities

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