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Entry Level Nuclear Engineer and Physicist

Naval Nuclear Laboratory (FMP)
Mifflin, PA Full Time
POSTED ON 3/24/2026
AVAILABLE BEFORE 4/23/2026
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

The Naval Nuclear Laboratory is looking for a highly motivated entry level engineer to perform plant analysis supporting the next nuclear-powered submarine design. This position provides the opportunity to join in on the cutting edge of nuclear technology while supporting the US Navy and impacting the next Naval reactor plant design. Specific work items include:

  • Analysis to support component/system design and early procedure development.
  • Development of protective features to improve operability, cost, and thermal performance margin for the next reactor design.
  • Development of a reactor plant model to support early design studies.
  • Applicants should have good communication and writing skills, be dedicated to delivering high-quality technical work products, and have completed coursework in heat transfer, thermodynamics, and fluid flow.
  • Prior coursework in nuclear is desired but not required as this position involves coursework and mentoring in nuclear engineering concepts.

Required Combination Of Knowledge And Skill

  • Bachelors degree from an accredited college or university in a related engineering or science field; or
  • Masters degree from an accredited college or university in a related engineering or science field.

Preferred Skills

  • Cumulative GPA of 3.2/4.0 or higher
  • Familiarity with building and running analysis models and/or interpreting results
  • Prior experience with Python, C , and/or RELAP

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.

Salary : $63,300 - $96,900

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