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
Administrative Assistant
Full Time · $54K-$85K/yr · 10+ YOE
Rockville, Maryland, United States · Onsite
Supplier Quality Engineer III
Full Time · $84K-$140K · 5+ YOE
Oak Ridge, Tennessee, United States · Onsite
Engineer II, Civil Structural
Full Time · $77K-$115K
Rockville, Maryland, United States · Onsite
Subcontracts Administrator
Full Time · $64K-$140K · 3+ YOE
Oak Ridge, Tennessee, United States · Onsite
Materials Manager
Full Time · $100K-$140K · 10+ YOE
Oak Ridge, Tennessee, United States · Onsite
Shift Manager (Fuel Facility)
Full Time · $91K-$152K · 5+ YOE
Oak Ridge, Tennessee, United States · Onsite
I&C Engineer
Full Time · $96K-$163K · 5+ YOE
Oak Ridge, Tennessee, United States · Onsite
Ariba Supplier Enablement Lead
Full Time · $95K-$140K · 7+ YOE
Rockville, Maryland, United States · Hybrid
Team Lead, Systems & Procedures
Full Time · $105K-$165K · 7+ YOE
Oak Ridge, Tennessee, United States · Onsite
Procurement Engineer IV
Full Time · $106K-$149K · 10+ YOE
Rockville, Maryland, United States · Hybrid
Operations Accounting Manager
Full Time · $115K-$154K · 10+ YOE
Rockville, Maryland, United States · Hybrid
Engineer IV - VI, Risk Informed Safety Analysis
Full Time · $112K-$221K · 10+ YOE
Rockville, Maryland, United States · Onsite
Administrator III, Business Systems
Full Time · $90K-$150K · 3+ YOE
Rockville, Maryland, United States · Onsite
Software Engineer III, Artificial Intelligence
Full Time · $122K-$180K · 5+ YOE
Rockville, Maryland, United States · Onsite
Software Engineer IV, Artificial Intelligence
Full Time · $144K-$192K · 10+ YOE
Rockville, Maryland, United States · Onsite
Lead, Materials Engineering
Full Time · $125K-$209K · 7+ YOE
Rockville, Maryland, United States · Onsite
Principal Materials Engineer (Metallics) - Advanced Nuclear Technology
Full Time · $122K-$203K · 10+ YOE
Rockville, Maryland, United States · Hybrid
Sr. Manager, Construction Projects
Full Time · $146K-$205K · 12+ YOE
Houston, Texas, United States · Onsite
Subcontracts Administrator
Full Time · $71K-$133K · 3+ YOE
Rockville, Maryland, United States · Onsite
Engineer III - IV, Systems (Microreactor Programs)
Full Time · $103K-$172K · 10+ YOE
Rockville, Maryland, United States · Hybrid
Project Controls Engineer II
Full Time · $91K-$152K · 3+ YOE
Rockville, Maryland, United States · Onsite
Project Controls Engineer VI
Full Time · $170K-$226K · 20+ YOE
Rockville, Maryland, United States · Onsite
Supply Chain Specialist II
Full Time · $70K-$100K · 3+ YOE
Houston, Texas, United States · Hybrid
Fuel Development Scientist
Full Time · $82K-$133K · 3+ YOE
Oak Ridge, Tennessee, United States · Onsite
Plant and Process Engineer IV - Nuclear Auxiliary Systems
Full Time · $112K-$187K · 10+ YOE
Rockville or Rockville · 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