Jobs in the United States

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Associate and Mid-Level Software Engineers
The Boeing Company
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The Boeing Company is looking for an Associate or Mid-Level Software Engineer to join our team in Berkeley, MO.
Added 6 mins ago
Senior Full-Stack Software Engineer - Procurement Systems
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Added 7 mins ago
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- $156,200 to $262,600 USD / year
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This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Reverse Engineer - Android based in the United States.
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Manager, Inspection & Monitoring
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Interoperability Engineer I / II / SR (Workday/UKG)
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Remote, United States
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Principal Engineer, Nuclear Analysis
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TerraPower, LLC. Is seeking a highly motivated Principal Nuclear Analysis Engineer. In this role, you will:
Added 17 mins ago
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Sr Applications Analyst Certified - Communications & Telehealth Technologies
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Expert ability and skill to troubleshoot system problems and to engineer expert solutions with IT customers and vendors
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E093 Construction Inspector I or II
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…improvement projects. Responsible to a licensed professional engineer who has full authority for approval of all work. Work requires contact with contractors. May perform materials tests…
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Kimley-Horn's Westlake, Texas (TX) office is seeking an Electrical Engineer with 5+ years of experience to join their Generation team! This is not a remote position.
Added 19 mins ago
Manufacturing Engineer
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Chart, Inc is looking for a Manufacturing Engineer to join our Manufacturing Engineering Department. The role will support the manufacturing process of Chart's Air-Cooled Heat Exchanger and…
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Mechanical Engineer - Gas/Power Generation
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Principal Software Engineer
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TerraPower

Principal Engineer, Nuclear Analysis

Bellevue, WA, United States

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Job details

Apply by: Nov 22, 2026
Experience: ○ B.S. or higher in Nuclear Engineering, or related discipline from an accredited university and 7+ years direct experience with proven nuclear engineering skills.
Posting language: English
Posted: Oct 22, 2026

Original job description

Principal Engineer, Nuclear Analysis

TerraPower is a nuclear technology company based in Bellevue, Washington. At its core, the company is working to raise living standards globally through a more affordable, secure, and environmentally friendly form of nuclear energy along with innovations in medical isotopes to improve human health. In 2006, TerraPower originated with Bill Gates and a group of like-minded visionaries who evaluated the fundamental challenges to raising living standards around the world. They recognized energy access was crucial to the health and economic well-being of communities and decided that the private sector needed to take action and create energy sources that would advance global energy deployment. TerraPowers mission is to be a world leader in new nuclear technologies, while developing innovators and future leaders in the nuclear field. As a result, the companys activities in the fields of nuclear energy and related sciences are yielding significant innovations in the safety and economics of nuclear power, hybrid energy and medical applications all for significant human health benefits. TerraPower is seeking to hire highly motivated and forward-thinking professionals who are interested in focusing on advanced nuclear reactor research and development and influencing change within the nuclear power landscape and bringing forward the critical production of medical isotopes. TerraPower is an Equal Opportunity Employer. We do not discriminate in hiring on the basis of sex, gender identity, sexual orientation, race, color, religious creed, national origin, physical or mental disability, protected Veteran status, or any other characteristic protected by federal, state, or local law. Principal Engineer, Nuclear Analysis TerraPower, LLC. Is seeking a highly motivated Principal Nuclear Analysis Engineer. In this role, you will:

Perform core design and analysis activities of advanced nuclear reactors, including calculation and optimization of fuel management, power distributions, reactivity coefficients, control rod worth and shutdown margin, sensitivity and uncertainties, consistent with required functional and quality requirements
Design and analyze new systems for solving complex problems
Design and execute sensitivity studies to understand the effects and validity of various modeling assumptions, including meshing, physics coupling, transport options, cross section preparation, fission product treatment, spatial kinetics, etc., and help build corrected methods if necessary
Establish and maintain documentation of analysis results and nuclear design solutions Work at TerraPower is dynamic and evolutionary. As such, new responsibilities often arise, and you should be capable of and excited about learning and applying specialized skills. Key Qualifications and Skills
Experience: ○ B.S. or higher in Nuclear Engineering, or related discipline from an accredited university and 7+ years direct experience with proven nuclear engineering skills. Higher education will count towards years of experience.
Knowledge of basic nuclear reactor design concepts to meaningfully support engineering team with understanding of systems being designed and code being reviewed
Experience in core design and analysis including fuel management optimization, reactivity coefficients, shielding and activation, control rod worth and uncertainty analysis.
Strong computational expertise: we like to consider computers as the universe at our fingertips rather than burdensome necessities
Strong MCNP experience is required; experience with other nuclear engineering software such as DIF3D, MC2, PARTISN, RELAP, SCALE, PARCS, APA, CASMO/SIMULATE, DRAGON, etc., is preferred.
Good working knowledge of nuclear and/or general numerical methods (e.g. PDEs, dynamics, deterministic and stochastic particle transport, isotopic depletion, perturbation theory, nuclear data, kinetics, etc.)
Experience in transient analysis, thermal hydraulics, fuel performance, etc. is desired
Fast reactor experience or experience with Core Operating Limits Report/Tech Specs is desired
Excellent verbal and communication skills
Ability and professionalism to work within published regulatory guidelines for nuclear reactor design
An ability to perform professional-quality software development for nuclear applications is preferred
Strong programming skills in any language is a plus
Experience working in NQA-1 environments desired
Maintain software by working with team to implement clearly defined enhancement requests and bug fixes

Equal employment opportunity, including veterans and individuals with disabilities.

View the full job description: https://www.click2apply.net/lpjBxruXOb4oeTxKKUnewg

PI287739009

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Communication skills
Software development

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Jobs in the United States