X-energy
Nuclear Energy
70open roles
$140kmedian advertised pay
Growinghiring pace, 57 of 100
Atruth index, 90 of 100
Overview
X-energy is an advanced nuclear reactor and fuel company headquartered in Rockville, Maryland, developing the Xe-100 high-temperature gas-cooled small modular reactor and the TRISO-X fuel that powers it. Founded in 2009, it has further offices and sites in Frederick, Maryland and Oak Ridge, Tennessee, where its fuel fabrication facility is being built, and works with utility and industrial partners on first deployments of its reactors in the United States. It recruits mechanical, electrical, fuel and thermal hydraulics engineers, project controls and supply chain specialists, procurement and purchasing staff, construction field engineers and corporate functions such as HR and recruiting.
How X-energy hires
Truth index
A 90/100
Median time to fill
37 days
Ghost roles
0%
Stale roles
40%
Reposted roles
0%
X-energy scores A on the Alion truth index (A is best, E worst), measured over 5 open roles re-checked against its own hiring board: 0% look like ghost listings, 40% have gone stale and 0% are the same role posted again. Its roles close in a median of 37 days. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
Jobs
$189k – $213k per year · In office · Full-Time · 3+ years exp · Bachelor's Degree · Rockville
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$119k – $140k per year · In office · Full-Time · 7+ years exp · Bachelor's Degree · Rockville
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$108k – $122k per year · In office · Full-Time · 10+ years exp · Bachelor's Degree · Rockville
Verification & Validation
Energy
MCNP
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$155k – $178k per year · Hybrid · Full-Time · 10+ years exp · High School Diploma · Oak Ridge
CI/CD
Cybersecurity
NIST 800-171
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$125k – $143k per year · Remote (United States) · Full-Time · 5+ years exp · High School Diploma · United States
JavaScript
ServiceNow
ITIL
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$66k – $90k per year · In office · Full-Time · 5+ years exp · Associate's Degree · Frederick
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$95k – $120k per year · In office · Full-Time · 1+ year exp · Bachelor's Degree · Houston
SolidWorks
MedTech
Verification & Validation
Apply
$163k – $186k per year · In office · Full-Time · Bachelor's Degree · Rockville
Verification & Validation
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$108k – $122k per year · In office · Full-Time · Bachelor's Degree · Rockville
Verification & Validation
Apply
$113k – $128k per year · Remote (United States) · Full-Time · 5+ years exp · High School Diploma · United States
JavaScript
Machine Learning
DevOps
Azure
AWS
Docker
Kubernetes
Cybersecurity
PKI
SIEM
Management
ServiceNow
ITIL
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$81k – $136k per year · Remote (United States) · Full-Time · Bachelor's Degree · United States
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$131k – $150k per year · In office · Full-Time · 10+ years exp · Master's Degree · Rockville
Verification & Validation
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Salary insights
Compensation ranges based on this company's open jobs
Median
$140k
Typical range
$50k – $240k
Open positions
86
84
Jobs
Intern
11.9%
Junior
14.3%
Middle
21.4%
Senior
27.4%
Staff
17.9%
Architect
7.1%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Intern | 10 | $50k | $50k |
| Junior | 12 | $160k | $52k – $218k |
| Middle | 18 | $124k | $90k – $208k |
| Senior | 23 | $158k | $88k – $223k |
| Staff | 15 | $155k | $122k – $230k |
| Architect | 6 | $223k | $120k – $240k |
Highest paying role
Director, Value Engineering and Product Management
$240k
Normalized to USD per year
All salaries at X-energy
By role, level and city, against the market · 86 jobs with pay
Visa sponsorship
3 ▲ 200%
H-1B filings in 12 months
$133k
Median offered salary
100
Open roles in United States
Who they sponsor
Civil engineers
3
In the register as X Energy, LLC, Rockville, MD
Other sponsors in the same field
AtkinsRéalis 
GE Vernova 
Dominion Energy 
Ameren
See 100 open roles Alert me
US Department of Labor · latest filing Jun 15, 2026 · Visa details by country
Growth
Hiring Momentum
57/100
Growing
Open positions
100
23 opened / 47 closed in 30 days
Median time-to-fill
40 days
faster than 34% of the market
ATS activity
Every ~10 hours
11/11/2026
Hiring Dynamics
0%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Industrial Engineering
31% ▼
HR
17% ▲
Operations
13% ▲
Leadership
4% ▼
Management
4% ▲
Energy
4% ▼
Actively hiring for HR (+7 in 30 days)
Activity Timeline
+11 jobs in a week
Nov 2026
Added ETAP to stack
Nov 2026
+6 jobs in a week
Nov 2026
+5 jobs in a week
Oct 2026
Added CAPA to stack
Oct 2026
Added VPN to stack
Oct 2026
Added NIST 800-171 to stack
Oct 2026
Added HPC to stack
Oct 2026
+13 jobs in a week
Oct 2026
+11 jobs in a week
Oct 2026
+12 jobs in a week
Oct 2026
New location: Oak Ridge
Oct 2026
Tech stack
Technologies named in job postings at X-energy over the last 12 months, by layer, with the share of postings for each.
Technologies in use
103
Postings analysed
76
Stack modernity
70/100AI adopter
Languages
JavaScript9%
Python8%
SQL5%
TypeScript5%
Frameworks & libraries
AWS Strands Agents5%
LangChain5%
LangGraph5%
React.js5%
Databases
Amazon Aurora7%
DynamoDB7%
PostgreSQL7%
Amazon DocumentDB5%
Cloud & platforms
AWS14%
GitLab8%
Amazon S37%
GitLab CI7%
AI & ML
LLM5%
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Full X-energy tech stack
103 technologies · by team · pay by technology · changes · similar stacks
Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors
G SquaredVia a fund
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
News
X-energy Announces Planned Retirement of TRISO-X President Joel Duling
ROCKVILLE, Md., Sept. 25, 2026 (GLOBE NEWSWIRE) -- X-Energy, Inc. (Nasdaq: XE) (
Read more
Report
Report
Oklo Vs. X-Energy: Is the New Nuclear IPO the Better Buy?
After its IPO, X-Energy's shares are up nearly 20% so far this month. Will they crush Oklo's?
Read more
Report
High-Temperature Gas-Cooled Reactors: Advanced Nuclear Technology for the Modern Economy
High-temperature gas-cooled reactors (HTGRs) like X-energy's Xe-100 are one of many Generation IV small modular reactor (SMR) technologies entering the commercial market today, targeting higher outlet temperatures, intrinsic safety features, and more effi
Read more
Report
TRISO-X: Advanced Fuel for Next-Generation Nuclear Energy
The Most Robust Nuclear Fuel on Earth The U.S. Department of Energy describes TRISO particle fuel as "the most robust nuclear fuel on Earth." The distinction is well-earned. Tri-Structural Isotropic fuel is a complete reimagination of nuclear fuel design,
Read more
Report
Solving for What's Next: How to Earn Efficiency in Nuclear Licensing
Robert TaylorVice President, Regulatory Affairs and LicensingX-energy The U.S. Nuclear Regulatory Commission completed an Environmental Assessment for X-energy's first Construction Permit Application, concluding it's environmental review ahead of schedule
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Report
The Advantages of Nuclear Energy
With the ability to deliver clean, safe, and reliable energy, nuclear energy is increasingly recognized as a critical solution for meeting rising global power demand while bringing new firm generation to the grid. Advanced nuclear technologies like X-ener
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Report
Understanding New Nuclear: What is a Generation IV Nuclear Reactor?
Generation IV: From Research to Commercial Reality Generation IV nuclear reactors represent some of the most significant advances in modern clean energy technology. First defined in the early 2000s by the Generation IV International Forum, the term descri
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Report
Report
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Offices
Where the company hires and what each office is for
Cities
7
Hiring now
4
Countries
2
Busiest office
Rockville
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Headquarters
Builds here
Office with open vacancies
No open vacancies right now Tap a pin for the office
Rockville
United States
HQ
MD - Gaither Rd., Rockville Corp Hqtrs
67 open roles 98 posted in 90 days 13% engineering 1000-5000 est. staff $150k Avg Salary
hires for Industrial Engineering, HR, Backend
530 Gaither Road, Suite 700, Rockville, MD 20850
Oak Ridge
United States
Plant / site
TN - Lafayette Dr., Oak Ridge
25 open roles 47 posted in 90 days 16% engineering 500-1000 est. staff $126k Avg Salary
hires for HR, Operations, Energy
151 Lafayette Drive, Suite 300 Oak Ridge, TN 37830
Houston
United States
Corporate office
TX - Houston
4 open roles 4 posted in 90 days 50-200 est. staff $173k Avg Salary
hires for Management, HR, Industrial Engineering
Frederick
United States
Plant / site
MD - Gaither Rd., Rockville Corp Hqtrs
3 open roles 4 posted in 90 days 50-200 est. staff $124k Avg Salary
hires for HR, Field & Service, Industrial Engineering
7201 McKinney Cir, Frederick, MD 21704
Toronto
Canada
Regional office
Toronto, Canada
393 University Ave 4th Floor Toronto, ON, Canada M5G 1E6
Manchester
United States
Regional office
Manchester, United Kingdom
Clarence House, 4 Clarence Street, Manchester, M2 4DW
Texas
United States
Regional office
Houston, Texas
2050 West Sam Houston Parkway, Suite 1100, Houston, Texas 77042