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
Writer V, Technical
Full Time · $113K-$188K · 15+ YOE
Rockville, Maryland, United States · Remote
Associate IV, HR Compliance & Employee Relations
Full Time · $105K-$175K · 4+ YOE
Rockville, Maryland, United States · Onsite
Writer VI, Technical
Full Time · $128K-$213K · 20+ YOE
Rockville, Maryland, United States · Remote
Project Controls Engineer
Full Time · $91K-$201K · 3+ YOE
Rockville, Maryland, United States · Onsite
Associate IV, Business Development and Structuring
Full Time · $115K-$192K · 10+ YOE
Rockville, Maryland, United States · Onsite
Engineer II, Systems
Full Time · $86K-$143K · 3+ YOE
Rockville, Maryland, United States · Onsite
Network & Infrastructure Engineer IV
Full Time · $120K-$200K · 10+ YOE
Frederick, Maryland, United States · Onsite
Manager, Licensing
Full Time · $121K-$201K · 10+ YOE
Rockville, Maryland, United States · Onsite
Network & Infrastructure Engineer IV
Full Time · $120K-$200K · 10+ YOE
Oak Ridge, Tennessee, United States · Onsite
Project Manager
Full Time · $137K-$228K · 10+ YOE
Rockville, Maryland, United States · Onsite
Project Controls Engineer III
Full Time · $105K-$175K
Rockville, Maryland, United States · Onsite
Planner-Scheduler III-IV
Full Time · $88K-$183K · 5+ YOE
Rockville, Maryland, United States · Onsite
Senior Licensing Engineer for New Reactor Projects and Strategy
Full Time · $103K-$248K · 10+ YOE
Rockville, Maryland, United States · Remote
Project Controls Analyst III
Full Time · $113K-$145K · 5+ YOE
Rockville, Maryland, United States · Onsite
Test Engineer, Test Design and Development
Full Time · $94K-$187K · 5+ YOE
Rockville, Maryland, United States · Hybrid
Senior Manager, Planning & Scheduling
Full Time · $146K-$244K · 12+ YOE
Rockville, Maryland, United States · Remote
CFD/ Thermal Hydraulics Engineer II-III
Full Time · $98K-$163K · 5+ YOE
Rockville, Maryland, United States · Onsite
Engineer IV-VI, Nuclear Fuel Licensing
Full Time · $149K-$248K · 10+ YOE
Rockville, Maryland, United States · Hybrid
Test Systems Design Lead
Full Time · $126K-$211K · 15+ YOE
Rockville, Maryland, United States · Onsite
Fire Protection Engineer
Full Time · $80K-$174K · 5+ YOE
Oak Ridge, Tennessee, United States · Onsite
Project Controls Analyst III- IV
Full Time · $113K-$167K · 5+ YOE
Rockville, Maryland, United States · Onsite
Fuel Quality Assurance Engineer III
Full Time · $92K-$153K · 5+ YOE
Oak Ridge, Tennessee, United States · Onsite
Senior Director, Engineering Strategy & Design
Full Time · $219K-$366K · 15+ YOE
Rockville, Maryland, United States · Remote
Manager, Plant Data Information
Full Time · $123K-$205K · 10+ YOE
Rockville, Maryland, United States · Remote
Senior Piping and Valve Design Engineer
Full Time · $144K-$240K · 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