X-energy

Develops advanced small modular nuclear reactors and fuel technology.

x-energy.comNuclear Energy, Energy Technology1,771 employeesUS
PrivateFounded 2009Series D (2025)Nuclear reactor designNuclear fuel manufacturingEnergy technology developmentNuclear engineering servicesClean energy generation
Showing 132 matching jobs
Title
Engineer V, Procurement
Full Time · $113K-$189K · 15+ YOE
Rockville, Maryland, United States · Onsite
Engineer III, Procurement
Full Time · $80K-$134K · 5+ YOE
Rockville, Maryland, United States · Hybrid
Mechanical Engineer, Graphite
Full Time · $86K-$213K · 1+ YOE
Rockville, Maryland, United States · Onsite
Project Manager
Full Time · $128K-$214K · 10+ YOE
Oak Ridge, Tennessee, United States · Onsite
Business Planner
Full Time · $95K-$158K · 2+ YOE
Oak Ridge, Tennessee, United States · Onsite
Manager, Financial Reporting
Full Time · $123K-$205K · 10+ YOE
Rockville, Maryland, United States · Hybrid
Manager, Technical Accounting
Full Time · $112K-$186K · 10+ YOE
Rockville, Maryland, United States · Hybrid
Engineer V, Nuclear
Full Time · $163K-$272K · 15+ YOE
Rockville, Maryland, United States · Hybrid
Engineer IV, Safety Analysis & V&V
Full Time · $112K-$187K · 10+ YOE
Rockville, Maryland, United States · Remote
Construction Quality Engineer
Full Time · $89K-$193K · 5+ YOE
Oak Ridge, Tennessee, United States · Onsite
Director, Treasury
Full Time · $194K-$323K · 10+ YOE
Rockville, Maryland, United States · Hybrid
Engineer V, Civil Structural
Full Time · $130K-$217K
Rockville, Maryland, United States · Hybrid
Corrective Action Program Specialist II
Full Time · $66K-$111K · 3+ YOE
Rockville, Maryland, United States · Onsite
Engineer V, Licensing
Full Time · $126K-$210K
Rockville, Maryland, United States · Onsite
Lead, Core Design
Full Time · $139K-$231K · 7+ YOE
Rockville, Maryland, United States · Hybrid
Engineer II- III, Reactor Physics Methods
Full Time · $98K-$163K · 3+ YOE
Rockville, Maryland, United States · Hybrid
Licensing Engineer III-V
Full Time · $84K-$210K · 5+ YOE
Rockville, Maryland, United States · Onsite
Engineer III, Plant & Process Design
Full Time · $99K-$165K · 5+ YOE
Rockville, Maryland, United States · Onsite
Engineer V, Mechanical Systems Design Engineer
Full Time · $131K-$218K · 15+ YOE
Rockville, Maryland, United States · Hybrid
Technical Fellow, Thermal Engineering
Full Time · $166K-$277K · 10+ YOE
Rockville, Maryland, United States · Onsite
Test Engineer, Structural & Vibration Testing
Full Time · $126K-$211K · 10+ YOE
Rockville, Maryland, United States · Hybrid
Deputy Director of Main Power Systems
Full Time · $165K-$274K · 12+ YOE
Rockville, Maryland, United States · Onsite
Deputy Director of Mechanical Engineering
Full Time · $165K-$274K · 12+ YOE
Rockville, Maryland, United States · Onsite
Manager, Mechanical Engineering (Dynamic Structural Analysis)
Full Time · $139K-$232K · 10+ YOE
Rockville, Maryland, United States · Hybrid
Engineer V, Valves & In-line devices Specialist
Full Time · $131K-$218K · 15+ YOE
Rockville, Maryland, United States · Onsite

About X-energy

Activities
Nuclear reactor designNuclear fuel manufacturingEnergy technology developmentNuclear engineering servicesClean energy generation
HeadquartersUS
Industries
Nuclear EnergyEnergy Technology
NameX-energy
Employees1,771
TypePrivate
Subsidiaries
TRISO-XXe-100 CanadaX-energy UK Holdings
TaglineDevelops advanced small modular nuclear reactors and fuel technology.
Founded2,009
Websitex-energy.com
Latest Funding RoundSeries D
Latest Funding Year2,025
Latest Funding Amount700,000,000
Latest Investors
Ares Management