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Nuclear Criticality Safety Engineer

MS Technology, Inc.
Oak Ridge, TN Full Time
POSTED ON 7/6/2026
AVAILABLE BEFORE 7/30/2026
MS Technology, Inc. is seeking a Nuclear Criticality Safety Engineer to support our clients in Oak Ridge, TN.

The Nuclear Criticality Safety Engineer supports nuclear safety activities for the Uranium Processing Facility (UPF), including design, construction, and operational readiness. This role is responsible for developing, reviewing, and implementing criticality safety evaluations and technical basis documents, ensuring compliance with nuclear criticality safety (NCS) requirements. The position involves performing facility walkdowns, supporting safety reviews and boards, resolving safety discrepancies, and contributing to the overall NCS program. The engineer collaborates with multidisciplinary teams to support safe operations, maintain regulatory compliance, and uphold a strong safety culture within DOE and/or commercial nuclear environments.

Responsibilities
  • Support nuclear engineering facets related to the Uranium Processing Facility (UPF) design and construction of the facility.
  • Develop, revise, and peer-review Criticality Safety Evaluations (CSEs), Technical Deviations (TDs), and other NCS technical basis documents.
  • Perform facility walkdowns, review implementing documents, and participate in Operational Safety Boards.
  • Resolve non-compliance or discrepancies in safety requirements.
  • Develop calculations related to nuclear facilities.
  • Ensure critical design needs are met.
  • Develop, review, and implement Nuclear Criticality Safety Evaluations (NCSEs) and Determinations (NCSDs).
  • Assist in implementing and maintaining the NCS program, including operability evaluations and problem report dispositions.
  • Maintain a strong safety culture, implement zero-accident philosophies, and ensure safe work practices in operational areas.
  • Review operational areas to assess NCS compliance.
  • Perform NCS evaluations.

Requirements
  • Bachelor’s Degree in Engineering; may look at other candidates with technical degree and additional relevant experience
  • 15 years of relevant experience
  • United States (U.S.) Citizen
  • Must understand nuclear criticality safety procedures
  • Must be able to be qualified to ANS-8.26
  • Must have excellent coordination and communication skills to work with various teams and stakeholders
  • Must have experience with DOE and/or commercial nuclear projects

 

Benefits:

All eligible employees enjoy an excellent benefits package, including medical/dental/vision insurance, short/long-term disability, life insurance, 401(k), paid time off including holidays, and tuition reimbursement.

EEO Statement:

MSTI is an equal-opportunity employer. All qualified candidates, including individuals with disabilities and protected veterans, are encouraged to apply. MSTI is an E-Verify employer. If you have difficulty using the online application system or need an accommodation to apply due to a disability, please email: HR@mstechnology.com.

EEO Employer/Vet/Disabled

Salary.com Estimation for Nuclear Criticality Safety Engineer in Oak Ridge, TN
$56,341 to $70,108
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