Entry Level Nuclear Engineer - Fleet Reactor Engineering

Fluor Marine Propulsion, LLC
West Mifflin, PA

Reference #: 7001

About Us Working at the Naval Nuclear Laboratory we foster pride in belonging to an organization whose culture is made up of these core values: Trust, Empowerment, and Collaboration. Our company promotes a positive culture while ensuring the safety and reliability of our nation's naval nuclear reactors, and training the Sailors who operate those reactors in the U.S. Navy's submarines and aircraft carrier Fleets. Looking for a lifetime career Apply today!

Job Description

Are you interested in learning about the nuclear power propulsion systems on the US Navy's aircraft carriers and submarines The Naval Nuclear Laboratory is seeking an entry level engineer to join the Fleet Reactor Engineering department to lead evaluations of a wide range of nuclear reactor operations and transients. This is an excellent opportunity to gain an integrated understanding of how many different reactor designs operate while developing analytical skills that support our important mission and keep our sailors, the public, and the environment safe. There are multiple openings in several units associated with this posting. The successful candidate's duties could include, but are not limited to: thermal hydraulic model development and analysis, researching and developing probabilistic models for reactor plant safety, understanding and communicating nuclear plant accident progression, developing scripts to run our models and post-process results, working productively and efficiently with a team of knowledgeable professionals to document different analyses, and understanding and communicating results to coworkers, managers, and Naval Reactors.

NNL develops and supports the world's safest and most advanced reactor plants and as an engineer in the Fleet Reactor Engineering department, your contributions will be directly tied to this important mission!

Required Combination of Knowledge and Skill

Bachelors degree from an accredited college or university in a related Mechanical, Chemical, or Nuclear Engineering or science field; or Masters degree from an accredited college or university in a related Mechanical, Chemical, or Nuclear Engineering or science field.

Preferred Skills

Experience with thermal-hydraulic analysis, scripting, and coding preferably with reactor safety computer codes such as RELAP5-3D or MELCOR or post-processing in MATLAB or Python;

Strong interest in fluid dynamics, heat transfer, thermodynamics, and other related subjects; Ability to understand large/complex systems including fluids, heat transfer, instrumentation and control systems, and electrical components; Strong written and verbal communications skills with an ability to articulate technical ideas in a clear and concise manner

Compensation and Benefits

Health, Dental, Vision & Voluntary Benefits

Disability, Life & Accident Insurance 401(k) Savings program & Capital Accumulation Plan Personal & Medical Time Off Paid Parental Leave Flexible Work Schedules Tuition Assistance for Eligible Employees Student Debt Benefit Personal Time Off Sell Program Employee Assistance Program (EAP) Wellness Program Visit us online to view all NNL benefits!

Pay Range

$63,300.00 - $96,900.00 annually Salary information provided is a general guideline only. Annual salary is based upon candidate experience and qualifications, as well as market and business considerations. The Naval Nuclear Laboratory is operated for the U.S. Department of Energy (DOE) by Fluor Marine Propulsion, LLC (FMP), a wholly owned subsidiary of Fluor Corporation. Naval Nuclear Laboratory personnel are FMP employees who work at four DOE facilities: Bettis Atomic Power Laboratory, Knolls Atomic Power Laboratory, Kenneth A. Kesselring Site, and Naval Reactors Facility, and at the U.S. Department of Defense-owned Nuclear Power Training Unit-Charleston. FMP employees also have an established presence at numerous shipyards and vendor locations. For nearly 70 years, the Naval Nuclear Laboratory has developed advanced nuclear propulsion technology, provided technical support, and trained world-class nuclear operators to ensure the safe and reliable operation of our nation's submarine and aircraft carrier Fleets. The Naval Nuclear Laboratory is a national asset solely dedicated to the Naval Nuclear Propulsion Program. We rely on the dedication and innovation of our nearly 8000 engineers, scientists, technicians, and support personnel.

All candidates must be U.S. citizens. Applicants selected will be subject to a Federal background investigation and must meet eligibility requirements for access to classified matter. FMP is a government contractor and maintains a drug free workplace and workforce. All candidates must be able to pass a drug test in compliance with FMP company policy and 10 CFR 707. Marijuana is a Federal Schedule I controlled substance and illegal under Federal Law. Therefore, FMP is required to test for marijuana.

Fluor Marine Propulsion, LLC is an Equal Opportunity Employer, including disability/vets. All qualified applicants will receive consideration for employment without regard to race, color, age, sex, religion, national origin, disability, veteran status, genetic information, or any other criteria protected by federal, state, or local law.

Apply Now

Equal Employment & Accessibility

Fluor Marine Propulsion, LLC is an Equal Opportunity Employer, including disability/vets.

Any applicant with a physical or mental disability who requires special assistance or a reasonable accommodation for any part of the application, please contact us at:

Posted 2026-01-28

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