Senior Nuclear Criticality Safety Engineer

Senior Nuclear Criticality Safety Engineer

Required Skills & Experience Bachelor's degree in nuclear engineering or a closely related technical discipline. Substantial hands-on experience performing nuclear criticality safety evaluations for fissile-material operations. Experience developing and documenting criticality controls for materials in multiple forms and configurations. Experience using validated criticality analysis methods and computational tools. Ability to interpret, document, and defend analysis results. Demonstrated ability to convert analytical conclusions into clear facility, equipment, and operational requirements.

Strong knowledge of criticality safety principles and applicable nuclear criticality safety standards. Familiarity with NRC, DOE, or equivalent requirements applicable to fissile-material operations. Strong technical writing and interdisciplinary communication skills.

Nice to Have Skills & Experience Experience with HALEU or uranium enrichments approaching 20 weight percent U-235. Experience with TRISO fuel, uranium fuel fabrication, powder processing, solution processing, enrichment, or other nuclear material manufacturing operations. Experience developing criticality requirements for storage arrays, process equipment, glove boxes, piping, transfer systems, or waste systems. Experience supporting NRC-regulated fuel-cycle facilities or DOE and NNSA production facilities.

An advanced degree in nuclear engineering or a closely related discipline. Eight or more years of nuclear criticality safety engineering experience.

Job Description The Senior Nuclear Criticality Safety Engineer will develop the nuclear criticality safety design basis and practical design requirements for a greenfield TRISO fuel manufacturing facility handling uranium enriched up to 19.75 weight percent U-235. This person will evaluate fissile material across multiple forms, configurations, process states, storage arrangements, transfer activities, maintenance conditions, waste streams, and credible abnormal events.

The role requires direct experience performing criticality safety analysis for material-handling or fuel-cycle operations. Reactor physics experience alone may not provide the necessary background because this assignment focuses on preventing inadvertent criticality when fissile materials are handled in varying forms and configurations throughout a manufacturing facility. The selected engineer must be comfortable performing technical studies, developing controls, writing the supporting technical basis, and working directly with process and facility designers.

This is 100% remote and pay rate ranges from $90-130/hr.