New

Nuclear Criticality Safety Engineer

Y-12 National Security Complex
tuition reimbursement, 401(k)
United States, Tennessee, Oak Ridge
Aug 28, 2025
Location: Oak Ridge, TN Job Title: Nuclear Criticality Safety Engineer Career Level From: Associate Career Level To: Specialist Organization: Projects & Program Integration (50001260) Job Specialty: Nuclear Engineering Safety What You'll Do This position resides in the NCS Field Support group. The Field Support group focuses on Production requested work, reviews every fissile process annually to ensure it is still within the bounds of the safety analysis, and provides response to abnormal conditions.NCS field engineers may initiate modifications to criticality safety evaluations (CSEs), resolve noncompliance's/discrepancies, and perform verifications and validations to revised CSEs. NCS engineers in the group spend significant time in the nuclear facilities and frequently interact with operators, management, other engineering/safety disciplines, and federal oversight. Candidates with no prior NCS experience will enter a 1-2 year qualification program to obtain necessary technical skills. What 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 Minimum Job Requirements Bachelor's degree in engineering/physical science discipline and a 3.0/4.0 cumulative GPA OR a Master's degree in engineering/physical science discipline with no experience and a 3.3/4.0 cumulative GPA OR a PhD in engineering/physical science discipline with no experience and a 3.5 cumulative GPA. There is a minimum Grade Point Average (GPA) requirement 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. 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. (Ref. DOE O 426.2A) Preferred Job Requirements Nuclear Engineering degree or graduate from either the US Navy Nuclear Power School or the Bettis Reactor Engineering School Excellent written and oral communication skills 3+ years of work experience in nuclear industry Prior qualification as an NCS engineer at a DOE or NRC regulated facility Experience with MCNP and/or KENO Proficiency with a computing language such as Python Security clearance Why Y-12? You get #morethanajob. We encourage employees to achieve a healthy personal balance among home, work and the community. One of the ways we embrace work-life balance is by offering flexible work arrangements that provide alternatives to the traditional workweek, while still meeting business needs. Top talent and personal commitment mean more to our success than any other factors, so we reward our people with the kinds of benefits that make a positive difference in the quality of their lives. Benefits such as: medical plan, prescription drug plan, vision plan, dental plan, employer matched 401(k) savings plan, disability coverage, education reimbursement and many more. Want to stay healthy and fit but hate the cost of a gym membership? Take advantage of one of our onsite workout facilities and eat healthy in our onsite cafeterias. Much more than a workplace, at Y-12, you can build a career that lasts a lifetime. Notes 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 of Energy Q clearance is required. This position may require entry into the Material Access Areas (MAA) and participation in the Human Reliability Program (10 C.F.R. Part 712), which requires successful competition of a DOE counterintelligence evaluation and may include a counterintelligence-scope polygraph examination. This position may be categorized as a "designated position" identified by 10 C.F.R. Part 709, requiring successful completion of a DOE counterintelligence evaluation that may include a counterintelligence-scope polygraph examination. CNS is a drug-free workplace. Candidates accepting a job offer will be required to pass a pre-placement physical, drug screening and background investigation. As an employee, you may be required to receive and maintain a security clearance from the United States Department of Energy in order to meet eligibility requirements for access to sensitive information or matter. U.S. citizenship is a requirement for security clearance applicants. All employees are subject to being randomly selected for drug testing without advance notification. CNS is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, gender, sexual orientation, gender identity, age, religion, national origin, ancestry, genetic information, disability or veteran status.