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castelion.com

14 technologies
VerifiedVisit15.4K/mo$52M13614 Tech25 Leads
Deep Dive

Castelion: Building the Arsenal of Democracy 2.0

A defense tech startup scaling military systems with startup velocity.

In an era of renewed great power competition, speed is the ultimate weapon. Castelion is betting that the U.S. defense industrial base needs a radical upgrade—and they are building the infrastructure to deliver it. They don't just build hardware; they are building a scalable machine for deterrence.

$114M
Total Funding
$51.5M
Annual Revenue
136
Employees
48%
Direct Traffic

"They aren't just disrupting the defense supply chain; they are bypassing it entirely with vertical integration."

The Mission: Speed Over Bureaucracy

Traditional defense contracting moves at the speed of paperwork. Castelion moves at the speed of software. By designing, testing, and manufacturing next-generation systems in-house, they collapse timelines that typically span decades into months. This is a direct response to the 'Valley of Death' that kills most dual-use hardware startups.

Traction & Financials

With $51.5M in revenue and a team of just 136 employees, Castelion is demonstrating exceptional capital efficiency. The ratio of revenue per employee (approx $378k) is impressive for a hardware-heavy defense startup, suggesting they have successfully scaled manufacturing processes or are commanding high margins on specialized systems.

The traffic data reveals a fascinating signal about their market position. Despite being a B2G (Business-to-Government) player, nearly half their traffic (48%) is direct. This indicates strong brand recall among a niche, high-value audience—likely military personnel, defense contractors, and policy analysts who type 'castelion.com' directly into their browser. It’s not a vanity metric; it’s a sign of relevance in the circles that matter.

  • Vertical Integration: Controlling the stack from design to manufacturing reduces reliance on fragile supply chains.
  • Dual-Use Technology: Capabilities likely applicable to both national defense and commercial space sectors.
  • Elite Leadership: Founded by Bryon Hargis, Andrew Kreitz, and Sean Pitt—veterans with deep industry experience.
Traditional defense prime contractors (slow, bureaucratic, cost-plus)
Startup velocity applied to hard engineering
Pure software startups (zero hardware moat)
Vertical integration from design to production
Legacy manufacturing (outdated tooling, lack of digital thread)
Scalable manufacturing for mass production

The Verdict: A Serious Contender

Castelion is positioned to be a foundational pillar of the modern defense ecosystem.

What tech stack does Castelion use?

18 detected
Security1
Programming Languages1
Analytics & Marketing1
Web Standards2
UI Libraries1
JavaScript Libraries2
Tracking & Analytics4
G
Google Tag Manager
J
jsDelivr
G
Google Static
G
Google Analytics

How much traffic does Castelion get?

Traffic & Engagement

15.4K
Monthly Visits
1.8
Pages/Visit
1:24
Avg. Duration
57%
Bounce Rate
Monthly Traffic Trend-12%
17.6K
Oct 2025
Oct
18.2K
Nov 2025
Nov
15.4K
Dec 2025
Dec

Traffic Sources

Search
34%
Direct
48%
Social
11%
Referrals
5%
Email
0%
Paid
1%

Where is Castelion's audience located?

🌍94.7%
🌍3.7%
🌍1.1%
🌍0.4%

What keywords does Castelion rank for?

5 keywords
1castelion8.4K vol
2castellion1.1K vol
3castelion space160 vol
4castellion website230 vol
5casetelion190 vol

How is Castelion's SEO?

Meta Tags

title16 chars

Home - Castelion

description126 chars

Castelion designs, tests, and manufactures next-generation military systems rapidly and at massive scale to deter future wars.

languageEN

Schema Types

Unknown

Who works at Castelion?

Loading leads...

What do customers think of Castelion?

No Trustpilot reviews available for this company.

Frequently Asked Questions about Castelion

What is Castelion's Revenue?
Castelion generates approximately $52M in annual revenue. With 136 employees, that's $378,659 per employee. The company has raised $114M in total funding.
What does Castelion do?
Castelion designs, tests, and manufactures next-generation military systems rapidly and at massive scale to deter future wars.
How fast is Castelion growing?
Castelion employee count has changed by 147% year over year.
What technologies does Castelion use?
Castelion uses 14 technologies across their website including Security, Programming Languages, CMS. Key technologies include reCAPTCHA, PHP, WordPress.
Who are Castelion's competitors?
Castelion's main competitors include GXO, Highbury Defense Group, Santa Barbara Infrared Inc. - a Heico company, Fuse Integration, Bay Systems Consulting Inc. (BSC). These companies operate in similar markets and compete for the same customer base.

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How to contact Castelion?

Contact Information

What are Castelion's key pages?

Export castelion.com Data

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About castelion.com

Castelion designs, tests, and manufactures next-generation military systems rapidly and at massive scale to deter future wars.

Company Overview

castelion.com
Website
jobs_and_career
Industry
#1,619,685
Global Rank
15.4K
Monthly Visitors
14
Technologies
25+
Employees

castelion.com Key Pages

Contact castelion.com

Technology Stack

castelion.com uses 14 technologies across their website including reCAPTCHA, PHP, WordPress, and more.

Security

reCAPTCHA

Programming Languages

PHP

CMS

WordPress

CDN

jsDelivr

Analytics & Marketing

Google Analytics

Performance

Lazy Loading, Priority Hints

Traffic & Audience

15.4K
Monthly Visits
57%
Bounce Rate
1.8
Pages/Visit
1:24
Avg. Duration

castelion.com receives approximately 15.4K monthly visitors and ranks #1,619,685 globally. The website has a bounce rate of 57% with visitors viewing an average of 1.8 pages per visit. Users spend an average of 1:24 on the site.

The majority of castelion.com's traffic comes from undefined, undefined, .

Frequently Asked Questions

What is castelion.com?
Castelion designs, tests, and manufactures next-generation military systems rapidly and at massive scale to deter future wars.
What technologies does castelion.com use?
castelion.com uses 14 technologies including reCAPTCHA, PHP, and 8 more. View the full tech stack analysis above.
How do I contact castelion.com?
You can contact castelion.com through their contact page.
Is castelion.com hiring?
Check castelion.com's careers page for current job openings and opportunities. The company has 25+ known employees.
How popular is castelion.com?
castelion.com receives approximately 15.4K monthly visitors and ranks #1,619,685 globally. Traffic is declining by 15.1% month-over-month.

Related Searches

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This page provides publicly available information about castelion.com. Data is collected from various public sources and may not always be up to date. For the most accurate information, please visit castelion.com directly at https://castelion.com.