Nuclear Criticality Safety Engineer

slihrms· AtkinsRealis Nuclear Secured LLC
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📍 US.TN.Oak Ridge.ORNLFull time💰 USD 57K–125K

About this role

Job Description

Overview

We are seeking a Nuclear Criticality Safety Engineer Energy, to join our Team in our Oak Ridge, TN office.

Your role

  • Stops work without fear of reprisal for unsafe conditions potentially affecting personnel safety or environmental risk.

  • Supports implementation of the Nuclear Criticality Safety (NCS) Program.

  • Supports facility activities to ensure criticality safety.

  • Prepares and peer reviews NCS documents Fissile Material Operations (FMO) Screens, NCS Evaluations (NCSEs), NCS Approvals

  • (NCSAs), NCS Clarifications, NCS Reports, and Criticality Accident Alarm System Needs Analyses.

  • Performs NCSE/A implementation walkdowns and provides input to site emergency plans and pre-incident plans, as requested.

  • Maintains awareness with assigned FMOs and NCS-related issues within Project.

  • Participates in critiques/investigations involving NCS issues.

  • Reviews Conditions Adverse to Quality (e.g., Non-Conformance Reports, Findings) for NCS impacts.

  • Performs audits, surveillances, and assessments of the NCS Program and Project conformance to NCSA and NCS-related contract

  • requirements.

  • Reviews and approves work packages, procedures, administrative aids, and other Project documents to ensure compliance with NCS

  • requirements.

  • Reviews and approves designs and plans that potentially impact NCS.

  • Reviews applicable facility Safety Basis documents for NCS integration.

  • Participates in Hazard Evaluation Studies/Hazards Analysis in support of Project activities.

  • Identifies the need for NCS training to support Project activities.

  • Provides delivery of NCS training and the evaluation of its effectiveness.

  • Maintains knowledge of NCS-related standards, guides, and codes.

  • Supports the execution of Integrated Safety Management System guiding principles and core functions and the Isotek Safety Culture.

  • Performs other duties as assigned.

About you

  • Requires a Baccalaureate Degree in Engineering.

  • Minimum 2 years’ related experience, 1-year nuclear experience.

  • Applicants selected will be subject to a Federal background investigation and must meet eligibility requirements for access to classified information or matter.

  • Proficient knowledge of Microsoft Office.

  • Strong communication, verbal and written skills.

  • Ability to describe the essential requirements, relationships and importance of applicable DOE Orders and Standards with respect to NCS.

  • Ability to perform calculations with Monte Carlo neutron transport codes.

  • Ability to perform hand calculations for criticality.

  • Applicants must have Real ID compliant identification to access the work location.

  • U.S. citizenship required for AtkinsRéalis/Isotek Systems Project positions.

  • Must be a U.S. citizen in order to be considered.

Rewards & benefits

At AtkinsRéalis, our values—Safety, Integrity, Collaboration, Innovation, and Excellence—are more than just words. They are the foundation of who we are and how we work. These principles shape our culture, guide our decisions, and inspire us to create an environment where every team member feels empowered to grow, succeed, and make a meaningful impact.

Depending on your employment status, AtkinsRéalis benefits may include medical, dental, vision, company-paid life and short- and long-term disability benefits, employer-matched 401(k) with 100% vesting, employee stock purchase plan, Paid Time Off, leaves of absences options, flexible work options, recognition and employee satisfaction programs, employee assistance program, and voluntary benefits. You can review our comprehensive benefits page here.

 

About AtkinsRéalis

We're AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. We're committed to leading our clients across our various end markets to engineer a better future for our planet and its people.

Find out more.

Additional information

Expected compensation range is between $57,000 - $125,000 annually depending on skills, experience, and geographical location.

Are you ready to expand your career with us? Apply today and help us shape something extraordinary.

AtkinsRéalis is an equal opportunity, Drug-Free employer EOE/Veteran/Disability

Please review AtkinsRéalis’ Equal Opportunity Statement here.

AtkinsRéalis cares about your privacy and is committed to protecting your privacy. Please consult our Privacy Notice our Careers site to know more about how we collect, use and transfer your Personal Data. By submitting your personal information to AtkinsRéalis, you confirm that you have read and accept our Privacy Notice. 

Note to staffing and direct hire agencies:

In the event a recruiter or agency who is not on our preferred supplier list submits a resume/candidate to anyone in the company, AtkinsRéalis family of companies, we explicitly reserve the right to recruit and hire the candidate(s) at our discretion and without any financial obligation to the recruiter or agency.  https://careers.atkinsrealis.com/recruitment-agencies

Worker Type

Employee

Job Type

Regular

At AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. We strongly believe that world-class talent makes no distinctions based on gender, ethnic or national origin, sexual identity and orientation, age, religion or disability, but enriches itself through these differences.  

Frequently Asked Questions

What is the salary for the Nuclear Criticality Safety Engineer role at slihrms?
The listed salary for this Nuclear Criticality Safety Engineer position at slihrms is USD 57K–125K. This is an Full time role.
Where is the Nuclear Criticality Safety Engineer position at slihrms located?
This Nuclear Criticality Safety Engineer role at slihrms is based in US.TN.Oak Ridge.ORNL. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Nuclear Criticality Safety Engineer role at slihrms full-time or part-time?
This is listed as a Full time position. It is posted as a Nuclear Criticality Safety Engineer role in the AtkinsRealis Nuclear Secured LLC department at slihrms.
Which team or department does the Nuclear Criticality Safety Engineer at slihrms belong to?
This Nuclear Criticality Safety Engineer position is part of the AtkinsRealis Nuclear Secured LLC department at slihrms. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Nuclear Criticality Safety Engineer position at slihrms?
Click the "Apply Now" button on this page. You will be redirected to slihrms's official application portal hosted on workday where you can submit your application directly.
When was the Nuclear Criticality Safety Engineer job at slihrms posted?
This Nuclear Criticality Safety Engineer position at slihrms was posted on Sep 3, 2026. Apply as soon as possible — early applications are often reviewed first.
Nuclear Criticality Safety Engineer
slihrms · 💰 USD 57K–125K
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You'll be redirected to slihrms's official application page on Workday.