Mechanical Engineer, Senior

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 DescriptionWould you like to be directly supporting the Reactor Servicing mission of the program? If you want to use your Mechanical Engineering knowledge and skills to solve real world problems and see your ideas, come to life, then the M-290/M140 Design and Analysis Unit in Reactor Servicing Systems is looking for you. With design and implementation cycles lasting from weeks to months you can quickly have direct input to solve real problems that are affecting the Navy and spent fuel transportation by developing new solutions that will advance the program's mission, Apply today! The M-290/M-140 Design and Analysis group is seeking a mechanical engineer to work on designs supporting spent fuel shipping containers. The successful candidate would perform mechanical system and hardware design, finite element analysis, as well as supporting the fleet of spent fuel containers. The candidate would work with a diverse team of engineers, scientists, project managers, and shipyards to support the Naval Reactors program. Required Combination of Knowledge and SkillBachelors degree from an accredited college or university in a related technical, engineering or science field and a minimum of 6 years of relevant experience; orMasters degree from an accredited college or university in a related technical, engineering or science field and a minimum of 4 years of relevant experience; orDoctorate degree from an accredited college or university in a related technical, engineering or science field and a minimum of 1 year of relevant experience; orCurrently a Senior Reactor Training Engineer, Refueling Engineer, or Field (RPCO) Engineer at the Company.Preferred SkillsDesign Experience with NNPP components.Ability to lead a small team.Motivation to pursue advances in technology, make decisions, and deliver results.Experience using 3D CAD software packages to evaluate suitability of a design based on functional requirements, design codes, and constraints (budget, physical space available, interferences, etc).Compensation and BenefitsHealth, Dental, Vision & Voluntary BenefitsDisability, Life & Accident Insurance401(k) Savings program & Capital Accumulation PlanPersonal & Medical Time OffPaid Parental LeaveFlexible Work SchedulesTuition Assistance for Eligible EmployeesStudent Debt Benefit Personal Time Off Sell ProgramEmployee Assistance Program (EAP)Wellness ProgramVisit us online to view all NNL benefits!Pay Range$95,700.00 - $149,600.00 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.Requisition ID8266-Posted09/08/2026-Bettis Lab-Engineering & Science-4 - 6 Years-0-25%-Job location (country) (1)United StatesJob location (region) (5)West Mifflin, PA , Idaho Falls, ID , Niskayuna, NY , Schenectady, NY , West Milton, NY