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Principal Materials Engineer- Material Fabrication Facility

Naval Nuclear Laboratory
parental leave, tuition assistance, 401(k)
United States, Pennsylvania, West Mifflin
814 Pittsburgh McKeesport Boulevard (Show on map)
Sep 23, 2026
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

The Materials Development Laboratory (MDL) seeks a candidate at the Principal Materials Engineer level to fill the laboratory engineer role within the Materials Fabrication Facility (MFF). The laboratory engineer is responsible for delivering quality work supporting our sponsors in the areas of heat treatment, rolling/forming, alloy development, and chemical processing for various metals.

Further responsibilities include:



  • Administration of the laboratory work request process (i.e. review/assign work requests, schedule/lead pre-job briefs, review final laboratory results, update the laboratory work request system)
  • Direct interaction with stakeholders during work planning and execution
  • Oversee the laboratory equipment preventive maintenance program including pressure systems inspections
  • Oversee upkeep of existing facility systems supporting the laboratory to include craft preventive maintenance
  • Equipment procurement and vendor maintenance support
  • MDL Property Coordinator
  • Position may require some travel

Required Combination of Knowledge and Skill
Bachelors degree from an accredited college or university in a related technical, engineering or science field and a minimum of 9 years of relevant experience; or Masters degree from an accredited college or university in a related technical, engineering or science field and a minimum of 7 years of relevant experience; or Doctorate degree from an accredited college or university in a related technical, engineering, science field and a minimum of 3 years of relevant experience; or Currently a Principal Reactor Training Engineer, Refueling Engineer, or Field (RPCO) Engineer at the Company.
Preferred Skills

  • Current/prior NNL laboratory operations experience
  • Current/prior experience with air/vacuum heat treatments, alloy development processes, metal working/forming, and/or chemical surface treatments (i.e. pickling, etching, etc.)
  • Excellent verbal/written communication skills
  • Demonstrated ability to work within a multi-disciplined work group (e.g. engineers, laboratory personnel, management, customers, compliance personnel)
  • Proactive problem solver
  • Experience or degree in materials science, metallurgical engineering, mechanical engineering, chemical engineering, or nuclear engineering

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
$106,200.00 - $166,000.00 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.

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