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Mechanical Engineer, Experienced


Job Location:

Idaho Falls, ID - USA

Yearly Salary: USD 106200 - 166000
Posted: 2 September 2026 (12 hours ago)
Application Deadline: 30 November 2026
Vacancies: 1 Vacancy

Job Summary

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 nations naval nuclear reactors and training the Sailors who operate those reactors in the U.S. Navys submarines and aircraft carrier Fleets. Looking for a lifetime career Apply today!

Job Description

The Naval Nuclear Laboratory Field Construction Engineering organization is seeking a Mechanical Engineer to join a multi-disciplined group of civil structural mechanical and electrical engineers to interface with system/ infrastructure engineers and architect engineering and construction subcontractors and provide technical knowledge for the execution of projects at the Naval Reactors Facility located on the Idaho National Laboratory site.


This role works within a project execution team environment with a Project Manager Contract Administrator Project Analyst Construction Oversight personnel and other Engineers to deliver projects in the construction portfolio ranging from short duration (<1yr) to multi-year multi-million-dollar major capital improvement projects for the renovation of aging infrastructure and systems.

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
  • Knowledge of infrastructure design and construction
  • Knowledge of industry and building trade practice techniques codes and standards
  • Experience with contracting construction services ideally both at NRF and outside of NNL
  • Experience with construction project scoping development and execution
  • Proficiency with Microsoft Office products and computer aided design (CAD) drafting software
  • Able to work independently and handle multiple tasks concurrently
  • Effective verbal and written communication skills and ability to interact with all levels of personnel management subcontractors and government oversight
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
$106200.00 - $166000.00 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 nations 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.


Required Experience:

Senior IC