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Senior Mechanical Engineer

Date Posted: Aug 29, 2026
Yearly: USD - USD

Job Detail

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    Location Idaho Falls, Idaho, United States of America
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    Job Type: Permanent
  • schedule
    Shift:
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    Career Level:
  • group
    Positions:
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    Experience:
  • male
    Gender: No Preference
  • school
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    Apply Before: Nov 27, 2026

Job Description

Overview

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 Our Production Systems Engineering unit is seeking an experienced Mechanical Engineer to support and lead the development, planning, and execution of radiological mechanical systems throughout their full life cycle. In this role, you'll research, design, verify, and develop mechanical and electromechanical equipment and fluid systems, recommending improvements that enhance safety, performance, efficiency, and cost. You may work in specialized areas such as thermal hydraulics, propulsion plant systems, component design, modeling and simulation, shock and vibration, acoustics, or structural analysis. Responsibilities include coordinating fabrication, installation, testing, operation, and maintenance activities, analyzing engineering problems using data?driven methods, applying engineering standards, and preparing or reviewing technical documentation for system installation and operations. 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 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; or Currently a Senior Reactor Training Engineer, Refueling Engineer, or Field (RPCO) Engineer at the Company. Preferred Skills Experience with ventilation, HVAC, compressed air systems, and pump design Proven project management expertise Demonstrated ability to work independently, showing self?reliance and strong motivation 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 $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

Key responsibilities

Not specified in the original listing.

Required skills

  • Engineering

What the company offers

Not specified in the original listing.

Skills Required

Company Overview

Idaho Falls, Idaho, United States of America

Naval Nuclear Laboratory promotes a positive culture focused on safety, reliability, and collaboration. They are responsible for the training of personnel operating naval nuclear reactors and ensuring the quality assurance of their projects. Read More

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