Castelion
Defense Manufacturing · Missiles
232open roles
$1.1Braised in 7 rounds
500+people
7cities with offices
Overview
Castelion is an American defense technology company founded in 2022 and headquartered in El Segundo, California, that develops low-cost long-range strike weapons, including hypersonic systems, designed for high-rate production. It designs, tests and manufactures its systems in house and runs flight test campaigns, with further sites in Texas, New Mexico and the Washington, D.C. area. It hires production technicians, quality inspection and build reliability engineering managers, training coordinators and instructional designers.
Key facts
As of Nov 13, 2026, Alion lists 232 open roles at Castelion. Castelion is headquartered in El Segundo, United States. It was founded in 2022. It has raised $1.1B in 2 funding rounds. The latest round is Series C of $1B, announced in 2026.
- Open roles
- 232Its careers board, read on Nov 13, 2026
- Headquarters
- El Segundo, United StatesAlion company profile, updated Nov 13, 2026
- Founded
- 2022Alion company profile, updated Nov 13, 2026
- Employees
- 500+Alion company profile, an estimated range
- Total raised
- $1.1BSum of 2 equity rounds Alion knows
- Latest round
- Series C · $1B · Aug 20, 2026Press report · tectonicdefense.com
- Technologies in its job postings
- 120Named in its job postings
Official records
Jobs
In office · Nationals only · Bachelor's Degree · United States
Inertial Navigation
Apply
In office · Nationals only · 5+ years exp · Bachelor's Degree · United States
MATLAB
CATIA
Abaqus
GD&T
Apply
In office · Nationals only · 2+ years exp · Bachelor's Degree · United States
MATLAB
Apply
In office · Nationals only · 5+ years exp · Bachelor's Degree · United States
SolidWorks
AutoCAD
SpaceTech
CATIA
Apply
In office · Nationals only · Internship · Bachelor's Degree · United States
Apply
In office · Top Secret · 5+ years exp · United States
Python
C#
C++
.NET
Cybersecurity
NIST 800-171
Chips/EDA
Altium Designer
SpaceTech
Siemens NX
Defense
CMMC
Apply
Apply
In office · Nationals only · Bachelor's Degree · United States
ANSYS
Apply
Apply
≈ $21k – $52k per year (Estimated) · In office · Nationals only · 7+ years exp · Associate's Degree · Rio Rancho
Apply
Apply
In office · Nationals only · 5+ years exp · Bachelor's Degree · Rio Rancho
AS9100
Apply
Growth
Hiring Momentum
45/100
Stable
Open positions
232
51 opened / 16 closed in 30 days
Median time-to-fill
48 days
faster than 28% of the market
ATS activity
Every ~6 hours
Today
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
32% ▼
Field & Service
11% ▲
Hardware
10% ▼
Operations
9% ▲
Aerospace
9%
Administrative
4% ▲
Actively hiring for Field & Service (+16 in 30 days)
Activity Timeline
+19 jobs in a week
Nov 2026
Added VMWare to stack
Nov 2026
Added Trivy to stack
Nov 2026
Added Red Hat to stack
Nov 2026
Added Hyper-V to stack
Nov 2026
Added Elastic SIEM to stack
Nov 2026
Added Active Directory to stack
Nov 2026
+14 jobs in a week
Nov 2026
Added GitHub Actions to stack
Oct 2026
+18 jobs in a week
Oct 2026
Added EtherCAT to stack
Oct 2026
Added CAPA to stack
Oct 2026
People
Charles Hargis
Executive Officer, Director
Andrew Kreitz
Executive Officer, Director
Sean Pitt
Executive Officer, Director
Alex Poulin
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Tech stack
Technologies named in job postings at Castelion over the last 12 months, by layer, with the share of postings for each.
Technologies in use
120
Postings analysed
143
Stack modernity
71/100AI adopter
Languages
Python27%
C++20%
MATLAB13%
Rust10%
Frameworks & libraries
Pytest1%
Asyncio1%
CUDA1%
FastAPI1%
Databases
PostgreSQL1%
Cloud & platforms
Linux14%
Kubernetes3%
Windows3%
Azure3%
AI & ML
LLM1%
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Full Castelion tech stack
120 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
AmbitionVia a fund
BlueYard CapitalVia a fund
ValueAdd VCVia a fund
7percent VenturesVia a fund
Silicon Valley InvestclubVia 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
Shared investors
News
Castelion Secures U.S. Navy Production Order for Blackbeard Hypersonic Weapon
U.S. Navy awards Castelion a production delivery order valued at up to $200 million to manufacture Blackbeard hypersonic strike weapons for carrier-based aviation.
Read more
Report
Castelion Moves Blackbeard into Production with U.S. Navy Order Valued Up to $200 Million
/PRNewswire/ -- Castelion today announced a production delivery order from the U.S. Navy, with a total value of up to $200 million, to manufacture, assemble,...
Read more
Report
Castelion Raises $1 Billion Series C At $13 Billion Valuation As U.S. Military Contracts Top $500 Million
Castelion has raised a $1 billion Series C financing at a $13 billion valuation to scale production of its Blackbeard hypersonic strike missile and accelerate development of longer-range strike weapons and defensive systems. The financing includes $800 mi
Read more
Report
Castelion hits $13B valuation to mass-produce hypersonic missiles
Founded in 2022, Castelion set out to manufacture hypersonic weapon systems at a lower cost and at faster speeds than traditional defense primes.
Read more
Report
Castelion Raises $1 Billion Series C to Scale Production of Low-Cost Hypersonic Weapons
Castelion, a cutting-edge defense technology company working to restore America
Read more
Report
Report
Castelion is raising a $350M Series B to scale hypersonic missile business
A hypersonics weapon startup is lining up a massive new funding round to scale its business with the U.S Department of Defense.
Read more
Report
Castelion: Defense Manufacturing Company Raises $100 Million
Castelion - a new defense manufacturer helping America and its allies preserve peace through deterrence with long-range hypersonic strike weapons - announced it has raised $100 million in debt and equity financing. And with rising tensions in the Indo-Pac
Read more
Report
Show more news
Offices
Where the company hires and what each office is for
Cities
7
Hiring now
6
Countries
1
Busiest office
Rio Rancho
Loading the map
Headquarters
Builds here
Office with open vacancies
No open vacancies right now Tap a pin for the office
El Segundo
United States
HQ
Rio Rancho
United States
Plant / site
Rio Rancho - New Mexico
34 open roles 34 posted in 90 days 9% engineering 200-500 est. staff
hires for Operations, Industrial Engineering, Field & Service
Allen
United States
Engineering / R&D
Mariner - California
16 open roles 19 posted in 90 days 75% engineering 200-500 est. staff
hires for Hardware, DevOps, Industrial Engineering
Midland
United States
Plant / site
Midland - Texas
6 open roles 7 posted in 90 days 50-200 est. staff
hires for Operations, Industrial Engineering, Administrative
Washington
United States
Sales office
DC - Virginia
5 open roles 5 posted in 90 days 50-200 est. staff
hires for Sales, Administrative, Legal
Greenville
United States
Engineering / R&D
Allen - Texas
1 open roles 1 posted in 90 days 100% engineering 10-50 est. staff
hires for QA
Torrance
United States
Plant / site
Mariner - California
1 open roles 1 posted in 90 days 10-50 est. staff
hires for Defense
Earlier presence
Rio de Janeiro, Brazil
How to cite this page
Alion, "Castelion: key facts", as of Nov 13, 2026. https://alion.io/company/castelion
These figures are published under a free licence. You may reuse them, including commercially, as long as you credit Alion and link back to this page. CC BY-SA 4.0