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Senior Mechanical Engineer - Nuclear

Bechtel
United Statesfull_timeVerifiedPosted 19 Mar 2026

About the role

Requisition ID: 292861 

  •  Relocation Authorized: National - Family 
  • Telework Type: Part-Time Telework 
  • Work Location: Knoxville, TN

 

Extraordinary teams building inspiring projects:

Since 1898, we have helped customers complete more than 25,000 projects in 160 countries on all seven continents that have created jobs, grown economies, improved the resiliency of the world's infrastructure, increased access to energy, resources, and vital services, and made the world a safer, cleaner place. 

 

Differentiated by the quality of our people and our relentless drive to deliver the most successful outcomes, we align our capabilities to our customers' objectives to create a lasting positive impact. We serve the Infrastructure; Nuclear, Security & Environmental; Energy; Mining & Metals, and the Manufacturing and Technology markets. Our services span from initial planning and investment, through start-up and operations. 

 

Core to Bechtel is our Vision, Values and Commitments. They are what we believe, what customers can expect, and how we deliver. Learn more about our extraordinary teams building inspiring projects in our Impact Report

Project Overview:

Bechtel is the licensing, engineering, procurement, and construction partner on TerraPower’s Natrium team. Selected by the U.S. Department of Energy (DOE) for its Advanced Reactor Demonstration Program, Natrium is participating in a DOE initiative to re-establish U.S. leadership in nuclear energy that provides matching funding to industry to design and build an operational advanced reactor. TerraPower, a leading advanced generation technology company founded by former Microsoft CEO Bill Gates, will be deploying its 345 MWe sodium fast reactor (SFR), called Natrium. The Natrium plant features an advanced, cost-competitive reactor design that is safer, simpler, easier, and less costly to construct, less expensive to operate, and able to provide energy that is competitive with fossil fuels. It also features an innovative molten salt energy storage system designed to be complementary to solar and wind power by evening out the peaks and valleys in production when the sun is not shining, or the wind is not blowing. With the reactor and energy storage output combined, the plant can produce more than 500 MWe of power.

 

Other Natrium partners include GE Hitachi Nuclear Energy, Energy Northwest, PacifiCorp, and Duke Energy, along with support from a number of national laboratories and universities. This DOE Program has the potential to be the largest funding program for advanced nuclear power in U.S. history and will shape the future of nuclear energy for decades.

Job Summary:

As a Senior Mechanical Engineer, you will support the development of Mechanical systems and equipment for the project by preparing studies, piping and instrumentation diagrams, calculations, engineering specifications, data sheets, material requisitions, performing technical bid evaluations, and more in accordance with applicable procedures, codes, standards, and contract requirements with limited oversight. This position will require working with other functions and disciplines in a team environment.

 

This role will be based in Knoxville, TN with periodic business travel, as required. 

Major Responsibilities:

  • Develop design drawings such as Piping & Instrumentation Diagrams (P&IDs)
  • Perform formal calculations including but not limited to line/duct sizing, pump sizing, valve sizing, equipment sizing, design pressure and temperature, and heat load calculations.
  • Develop engineering specifications, material requisitions, and data sheets.
  • Review vendor submittals and integrate information into a design solution.
  • Develop design configuration packages for configuration control and change management.
  • Execute to schedule requirements while maintaining a high degree of quality in work product.
  • Assist in the building

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Company

Bechtel

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