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Intermediate Mechanical Engineer

Naval Nuclear Laboratory
West Mifflin, PA Full Time
POSTED ON 4/2/2025
AVAILABLE BEFORE 6/2/2025

Job Details

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

NNL is seeking a Computational Fluid Dynamics (CFD) engineer to support the design and optimization of more capable and cost-effective nuclear reactors for the US nuclear navy. Responsibilities include development and evaluation of new design concepts using state-of-the-art CFD methods, software, and computer systems. Responsibilities may also include qualification of analytical modeling methods and design of supplemental hydraulic tests where needed. Reactor system CFD models can be quite large with complex geometries and flow physics. This is a unique opportunity to develop CFD models that effectively simulate complex reactor flow fields using the robust computational capability of NNL's High Performance Computing System.

The successful candidate will work as part a multi-discipline reactor design team focused on: (1) defining the design space and technology required for a next generation submarine targeting high-level notional goals; and (2) evaluating reactor core cost versus performance capability trade-offs. This role requires frequent and effective communication with other core design, materials performance, core manufacturing, and reactor plant development engineers. This position provides opportunities to influence technology development for performance gains and cost reductions.

In addition, the candidate must possess excellent verbal and written communication skills, expertise in computational systems, the ability to work without close supervision and make sound independent decisions, and excellent teaming skills.

Required Combination of Knowledge and Skill

Bachelor's degree from an accredited college or university in engineering or science related field and 2 years of relevant experience; or Master's degree from an accredited college or university in engineering or science related field and 1 year of relevant experience; or Currently or previously EOOW qualified in the Nuclear Operations Program; or SRE qualified.

Preferred Skills

The successful candidate will have basic experience with the overall CFD analysis process, including CAD geometry model preparation, CFD mesh generation, choosing appropriate solution setup parameters and turbulence models, and post-processing techniques to successfully communicate simulation results and provide insight regarding design decisions and technical direction.

Compensation and Benefits

  • Health, Dental, Vision & Voluntary Benefits
  • Disability, Life & Accident Insurance
  • 401(k) Savings program & Captial 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

$76,400.00 - $117,000.00 annually

Salary information provided is a general guide line 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.

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.
Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.

Salary : $76,400 - $117,000

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