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Overview

X-energy is a leading developer of advanced nuclear energy technology. In an era of unprecedented electricity demand growth, our reactors and fuel provide the scalable and clean solutions necessary to meet that demand. Our technology builds on decades of operational experience and research in both high-temperature gas reactors and TRISO fuel to deliver a new generation of nuclear energy tailored for the 21st century economy. The modern economy demands more than just electricity. We are engineered to power the most energy-intensive sectors on Earth by delivering the high-temperature steam and constant power necessary for heavy industry and advanced technologies.

Open roles (114)

Showing 1–100 of 114 open roles

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Director, Employee Relations & Compliance

X energy Rockville, MD
Posted 7 days ago
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Nuclear Criticality Safety Engineer

X energy Oak Ridge, TN
Posted 8 days ago
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Health Physicist

X energy Oak Ridge, TN
Posted 9 days ago
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Manager, Recruiting

X energy Oak Ridge, TN
Posted 10 days ago
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Senior Advisor (Fuel Engineering)

X energy Oak Ridge, TN
Posted 10 days ago
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Specialist II, Supply Chain

X energy Rockville, MD
Posted 10 days ago
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Analyst I, Business

X energy Oak Ridge, TN
Posted 10 days ago
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Procurement Administrator IV

X energy Rockville, MD
Posted 10 days ago
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Manager, Mechanical Engineering

X energy Rockville, MD
Posted 11 days ago
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Project Controls Analyst III

X energy Rockville, MD
Posted 11 days ago
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CFD/Thermal Hydraulics Engineer III-IV

X energy Rockville, MD
Posted 11 days ago
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CFD/ Thermal Hydraulics Engineer III

X energy Rockville, MD
Posted 11 days ago
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Fuel Sales Customer Liaison

X energy Oak Ridge, TN
Posted 11 days ago
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Graphite Materials Manager

X energy Rockville, MD
Posted 12 days ago
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Health & Safety Specialist

X energy Oak Ridge, TN
Posted 12 days ago
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Assistant IV, Executive

X energy Rockville, MD
Posted 12 days ago
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Electrical Field Engineer

X energy Oak Ridge, TN
Posted 12 days ago
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Engineering Integration Manager

X energy Rockville, MD
Posted 12 days ago
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Purchasing Manager

X energy Oak Ridge, TN
Posted 12 days ago
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Manager, Construction Project Engineering

X energy Oak Ridge, TN
Posted 13 days ago
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Proposal Production Specialist III

X energy Rockville, MD
Posted 13 days ago
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Facilities Administrator II

X energy Rockville, MD
Posted 13 days ago
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Procurement Administrator

X energy Oak Ridge, TN
Posted 13 days ago
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Fire Protection Design Engineer

X energy Rockville, MD
Posted 14 days ago
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Subcontract Technical Manager

X energy Oak Ridge, TN
Posted 16 days ago
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Materials Engineer

X energy Rockville, MD
Posted 17 days ago
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Senior Manager, Construction Projects

X energy Oak Ridge, TN
Posted 17 days ago
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Systems Engineer

X energy Rockville, MD
Posted 17 days ago
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Nuclear Engineering Internship - Summer 2027

X energy Rockville, MD
Posted 18 days ago
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HVAC Mechanical Design Engineer

X energy 2 Locations
Posted 18 days ago
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Nuclear Software Engineering Manager

X energy Rockville, MD
Posted 18 days ago
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Test Engineering Internship - Summer 2027

X energy Rockville, MD
Posted 18 days ago
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Civil Engineering Internship - Summer 2027

X energy Rockville, MD
Posted 18 days ago
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Process Engineer VI - Nuclear Waste Management

X energy Oak Ridge, TN
Posted 18 days ago
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Growth & Strategy Internship - Summer 2027

X energy Rockville, MD
Posted 18 days ago
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Project Engineer

X energy Oak Ridge, TN
Posted 18 days ago
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Mechanical Engineering Internship - Summer 2027

X energy Rockville, MD
Posted 18 days ago
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Director, Engineering Integration

X energy Rockville, MD
Posted 18 days ago
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Project Management Intern

X energy Oak Ridge, TN
Posted 18 days ago
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Nuclear Security (Physical)/Safeguards Compliance Analyst V

X energy Rockville, MD
Posted 19 days ago
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Project Controls Engineer

X energy Rockville, MD
Posted 19 days ago
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Thermal Analysis Manager

X energy Rockville, MD
Posted 19 days ago
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CAD/3D Electrical Designer IV

X energy Rockville, MD
Posted 21 days ago
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Microreactor System Engineer III-IV

X energy MD - Gaither Rd., Rockville Corp Hqtrs
Posted 24 days ago
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Engineer III, Nuclear Packaging

X energy Rockville, MD
Posted 24 days ago
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Principal Materials Engineer (Metallics) - Advanced Nuclear Technology

X energy Rockville, MD
Posted 24 days ago
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Heat Exchanger Design Engineer

X energy Rockville, MD
Posted 25 days ago
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Director, Engineering

X energy Rockville, MD
Posted 25 days ago
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Test Manager, Helium Test Facility

X energy Rockville, MD
Posted 25 days ago
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Test Hardware Design Engineer

X energy Rockville, MD
Posted 25 days ago
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Senior Pressure Vessels/Tanks Engineer

X energy 2 Locations
Posted 25 days ago
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Project Controls Lead

X energy Rockville, MD
Posted 26 days ago
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Manager, Mechanical Engineer - Reactor Internals

X energy Rockville, MD
Posted 26 days ago
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Associate II, Business Development and Structuring

X energy Rockville, MD
Posted 27 days ago
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Project Controls Engineer II (Risk Management)

X energy Rockville, MD
Posted 27 days ago
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Subcontracts Administrator

X energy Oak Ridge, TN
Posted 1 month ago
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Construction Project Engineer (Process & Mechanical)

X energy Oak Ridge, TN
Posted 1 month ago
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Construction Project Engineer (Electrical, I &C)

X energy Oak Ridge, TN
Posted 1 month ago
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Procurement Engineer

X energy Oak Ridge, TN
Posted 1 month ago
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Senior Project Architect

X energy Rockville, MD
Posted 1 month ago
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Construction Quality Engineer

X energy Oak Ridge, TN
Posted 1 month ago
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Engineer IV, Project Quality Assurance

X energy Rockville, MD
Posted 1 month ago
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Engineer IV, Nuclear Fuel Systems

X energy Rockville, MD
Posted 1 month ago
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Engineer II, Plant & Process

X energy Rockville, MD
Posted 1 month ago
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Engineer IV, Cybersecurity

X energy Rockville, MD
Posted 1 month ago
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Commissioning Test Engineer

X energy Oak Ridge, TN
Posted 1 month ago
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Principal Nuclear Assurance Engineer

X energy Rockville, MD
Posted 1 month ago
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Nuclear Completion Engineer

X energy Oak Ridge, TN
Posted 1 month ago
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Senior Engineering Manager - Projects

X energy Oak Ridge, TN
Posted 1 month ago
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Engineer IV, AI & Digital Engineering

X energy Rockville, MD
Posted 1 month ago
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Data Integration Manager

X energy Oak Ridge, TN
Posted 1 month ago
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Software Engineer III, AI Digital & Engineering Software

X energy Rockville, MD
Posted 1 month ago
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Machinist V, CNC Programmer

X energy MD - McKinney Cir., Frederick
Posted 1 month ago
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SAP Ariba Administrator

X energy Rockville, MD
Posted 1 month ago
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Software Engineer V, AI Digital & Engineering Software

X energy Rockville, MD
Posted 1 month ago
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Engineer III-IV, Engineering Strategy

X energy Rockville, MD
Posted 1 month ago
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Engineer V, Configuration Management

X energy Rockville, MD
Posted 1 month ago
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Engineer IV, Safety Analysis & V&V

X energy Rockville, MD
Posted 1 month ago
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Engineer I–III, Thermal-Hydraulic Safety Analysis & V&V

X energy Rockville, MD
Posted 1 month ago
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Test Engineer, Design and Execution

X energy Rockville, MD
Posted 1 month ago
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Thermal Analysis Engineer

X energy Rockville, MD
Posted 1 month ago
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AI Platform Engineer

X energy Rockville, MD
Posted 1 month ago
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Director, Value Engineering and Product Management

X energy Rockville, MD
Posted 1 month ago
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Systems Administrator IV, Enterprise Content Management

X energy Rockville, MD
Posted 1 month ago
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Associate IV, Business Development and Structuring

X energy Rockville, MD
Posted 1 month ago
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Mechanical Engineer, Graphite

X energy Rockville, MD
Posted 1 month ago
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Test Engineer II/III, Mechanical

X energy Rockville, MD
Posted 1 month ago
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Mechanical Design Engineer – Reactor Internals (In-Vessel Shielding)

X energy Rockville, MD
Posted 1 month ago
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Mechanical Design Engineer

X energy Rockville, MD
Posted 1 month ago
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Mechanical Systems Design Engineer

X energy Rockville, MD
Posted 1 month ago
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Software Engineer IV, Artificial Intelligence

X energy Rockville, MD
Posted 1 month ago
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Director, Customer Relationship Management (Utilities)

X energy Rockville, MD
Posted 1 month ago
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Structural Analysis Engineer, Metallics

X energy Rockville, MD
Posted 1 month ago
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Test Engineer, Structural & Vibration Testing

X energy Rockville, MD
Posted 1 month ago
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Engineer V-VI, Licensing

X energy Rockville, MD
Posted 1 month ago
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Chemical Engineer

X energy Rockville, MD
Posted 1 month ago
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Licensing Engineer II-VI, Risk-Informed Safety Analysis

X energy Rockville, MD
Posted 1 month ago
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Mechanical Design Engineer (Steam Generator)

X energy Rockville, MD
Posted 1 month ago
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Engineer IV-V, Risk Informed Safety Analysis

X energy Rockville, MD
Posted 1 month ago
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Procurement Engineer - Steam and Safety Valves

X energy Rockville, MD
Posted 1 month ago