Nuclear Criticality Safety Engineer - UPF
Listed on 2026-05-25
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Engineering
Quality Engineering, Environmental Engineer
Location: Oak Ridge, TN
Job Title: Nuclear Criticality Safety Engineer - UPF
Career Level From: Associate
Career Level To: Senior Associate
Organization: Criticality Safety Engineering )
Job Specialty: Nuclear Engineering Safety
What You’ll DoProvides technical capabilities in Nuclear Criticality Safety (NCS) to ensure fissile materials are processed, stored, transferred, and handled safely so that personnel and property are protected against a criticality accident. The selected individual will also serve as the Lead NCS Engineer for operations in the east side of the UPF Main Processing Building (e.g., casting, pickling, bulk metal oxidation, etc.). Performs Criticality Safety Analysis of equipment, processes, and procedures prescribing correct methods, control requirements, and limitations.
Performs or participates in surveillance, inspections, walkthroughs, appraisals, or audits of fissile material operations to ensure compliance with Nuclear Criticality Safety Approvals, Nuclear Safety rules, including Safety Analysis Reports, Safety Assessments, Safety Reviews, and risk assessments/analyses. Provides operating areas with specific NCS professional interpretations and advice. Provides training to employees in basic criticality safety. Validates, maintains, and operates nuclear computer codes and nuclear cross‑sections.
You Can Expect
- Meaningful work and unique opportunities to support missions vital to national and global security
- Top‑notch, dedicated colleagues
- Generous pay and benefits with a stable organization
- Career advancement and professional development programs
- Work‑life balance fostered through flexible work options and wellness initiatives
Job Requirements
- Bachelor of Science in Engineering/Physical Science (Chemistry, Physics, or related) from an Engineering Accreditation Commission (EAC) Accreditation Board of Engineering and Technology (ABET) accredited program in the United States or designated equivalents from Canada or Mexico, the Washington Accord, or the list of substantially equivalent as documented by ABET. OR MS in Engineering/Physical science. OR PhD in Engineering/Physical science.
- Minimum Grade Point Average (GPA) requirement applies up to 4 years post‑graduation at time of offer and confirmed by transcript. Beyond four years from graduation, engineering experience will supersede GPA as a requirement for hire.
- 3.0/4.0 minimum cumulative GPA for Bachelor degree
- 3.3 minimum cumulative GPA for Master degree
- 3.5 minimum cumulative GPA for PhD
- In addition, the applicant must meet the requirements of DOE O 426.2A (i.e., Baccalaureate in engineering or related scientific major, 2 years job‑related, and 1‑year nuclear experience; or a DOE O 426.2A alternative). DOE 426.2A experience requirements can be satisfied following employment. In the interim, newly hired personnel will not be assigned duties that could impact the safety basis of nuclear facilities.
Job Requirements
- Bachelor’s or advanced degree in Nuclear Engineering
- Prior qualification as an NCS engineer at Y‑12
- Prior qualification as an NCS peer reviewer at Y‑12
- A minimum of seven years relevant professional experience.
- Demonstrated leadership experience.
- Experience in MCNP and/or KENO.
- Medical plan
- Prescription drug plan
- Vision plan
- Dental plan
- Employer matched 401(k) savings plan
- Disability coverage
- Education reimbursement
The minimum education and experience for the lowest career level in the job posting range are listed under Minimum Job Requirements. Successful candidates hired into a higher career level than the minimum in the range must meet the requirements listed in the job leveling charts for the career level into which they are being hired.
If a range of Career Levels is posted, i.e., Senior Associate to Senior Specialist, internal applicants already in one of the Career Levels would come across at their current Career Level. Internal applicants currently in a lower level Career Level would move to the lowest posted Career Level.
Requires a Q clearance; however all qualified candidates will be considered regardless of their current clearance status. The ability to obtain and maintain a Department…
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