Nuclear Engineering Jobs in Tennessee (NOW HIRING)

Requisition ID20079-Posted08/19/2026-Engineering- Level of Experience (1) -Travel - 30% or less- Job Location Options (1)

The candidate is responsible for providing guidance and leadership on technical issues and overall strategies related to Nuclear Criticality Safety for the Y-12 plan. Advises the Director, Nuclear Engineering Safety as well as the managers within the Nuclear Engineering Safety directorate on issues related to analysis, implementation, and issue resolution. Responsible for peer review of NCS analysis and documents, ensuring necessary technical considerations have been incorporated to ensure safe operations. The candidate will assist with developing training for incoming Criticality Safety Engineers as well as mentoring personnel on technical competencies. Provides input and guidance on Nuclear Criticality Safety Approvals, Nuclear Safety rules, including Safety Analysis Reports, Safety Assessments, Safety Reviews, and risk assessments/analyses. Interfaces on behalf of the Company with the National Nuclear Safety Administration and the Defense Nuclear Facilities Safety Board and other entities on matters related to Nuclear Criticality Safety.

• 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
• Bachelor's degree in engineering, mathematics, chemistry, or physics from a program accredited by the U.S. Engineering Accreditation Commission (EAC) of ABET (formerly the Accreditation Board for Engineering and Technology).Designated equivalents from Canada or Mexico, the Washington Accord, or the list of substantially equivalent programs as documented by the EAC ABET.
• Minimum 12 years of relevant and progressive experience in nuclear safety and nuclear criticality safety.
• 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)

• Master's degree in Nuclear Engineering
• Qualification as an NCS peer reviewer.
• Demonstrated experience and reputation within the Nuclear Criticality Safety community.
• Demonstrated professionalism in written and oral communications.

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.

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.