Overview
TrueUp
Trajectory Score
89
/100
Trajectory Rank
Business
Fusion energy
Founded
14 years ago
2013
HQ
Employees
290
Valuation
$16 billion
TrueUp
Rank
#271
Company type
Private - Venture-Backed
Helion is a Fusion energy company with 110 job openings. It is currently valued at $16 billion as a private company. 290 people work at Helion. The company was founded in 2013.
Company grid
Employee happiness →
Growth →
🚀
🐢
😊
😟
Jobs
Open jobs
110
TrueUp
Rank
#398
Top Job Categories
Jobs
1.
Engineering (Hardware)
35
(32%)
2.
Engineering (Software)
14
(13%)
3.
Business Operations & Program Management
7
(6%)
4.
Marketing & Growth
4
(4%)
5.
Data Science
3
(3%)
Top Job Locations
Jobs
1.
🇺🇸 Seattle
110
(100%)
2.
🇺🇸 United States
110
(100%)
Top Tech/Tools Mentioned
Jobs
1.
Python
27
(25%)
2.
MATLAB
18
(16%)
3.
SolidWorks
9
(8%)
4.
C++
8
(7%)
5.
Fortran
6
(5%)
Financials
Valuation
$15.5billion
Tech Unicorn
Last round - Jun 2026
Latest secondary valuation
$16.4billion
6% from last round
Estimate as of Jun 30, 2026
Data source: Caplight
Most recent funding
1 month ago ($465 million)
Total funding
$1.5 billion
Actual value 'created' (valuation - total funding)
+$14.0 billion
Lead Investor - Seed
Mithril Capital Management
Valuation per employee
$53.4 million
TrueUp
Rank
#93
Culture
Employee sentiment
Would recommend company
94%
20+ reviews
Sources: TrueUp, Glassdoor, Blind
Better than 98% of tech co's
Approve of CEO
David Kirtley
100%
Sources: TrueUp, Glassdoor, Blind
People
Helion Org Chart
Rankings and awards
TIME100 Most Influential Companies
New Frontiers
2026
Geekwire 200 #1
2026
Career-Launching Companies (by Aakash Gupta)
2025
Geekwire 200 #2
2025
Insider Most Promising Startups
2024
Layoffs
No known layoffs
External research
Top posts
Compare to other companies
Job openings
59
Employees
800
Founded
9 years ago
Valuation
$10 billion
Trajectory Score
95
