Senior Mechanical Engineer

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 DescriptionThe Primary Systems Integration & Optimization unit of Future Power Plants is transitioning from the concept phase and into detailed design for the next naval submarine design project. Primary plant systems are being evaluated for targeted improvements to meet project goals and performance requirements, and are being evaluated for sustainability, construction improvements and cost reductions. Additionally, technology and digital improvements are being developed to lay the foundation for future submarine design projects.The group is responsible for integrating the development and design work across multiple disciplines, including plant engineers in the mechanical, electrical, I&C areas, reactor design and protection engineers, component engineers, etc. Typical assignments for this position will include defining and evaluating system, component, and plant designs, defining concepts of operations, and evaluating design trade-offs that inform technology development needs and design decisions. The successful candidate will bring knowledge of system and plant design and/or knowledge of normal and abnormal plant operations, and the perspective of the operators, to the design and development process. 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; or Masters degree from an accredited college or university in a related technical, engineering or science field and a minimum of 4 years of relevant experience; or Doctorate degree from an accredited college or university in a related technical, engineering or science field and a minimum of 1 year of relevant experience.Preferred SkillsNaval Nuclear Propulsion Program plant systems design experienceOperations experience within the NNPP; options include shipboard or prototype plant operations or RPCO construction and test supportStrong written and verbal communication skills to articulate technical information clearly and conciselyInterpersonal skills and leadership to support the group's mission of integration and coordination among multiple varied disciplinesCompensation 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 ID8074- Posted06/29/2026-Bettis Lab-Engineering & Science-4 - 6 Years-0-25%-Job location (country) (1)United StatesJob location (region) (2)West Mifflin, PA , Niskayuna, NY