Insights

Military Experience Defense and space focus with a team of engineers and intelligence professionals positioned to support C5I systems, signaling potential for shipboard, base, and joint repository modernization opportunities.

Mid-market Scale Revenue in the $50M-$100M range and a headcount of 51-200 suggests a nimble but capable contractor profile suitable for program expansions, subcontracting on larger primes, and expanding services to prime contractors.

Technology Stack Active adoption of enterprise and collaboration tools (Microsoft AD, Teams, VMware), data management (MongoDB, PostgreSQL), and customer engagement platforms (Braze) indicating capabilities to support modern C5I software solutions and security postures.

Leadership Momentum Recent executive appointment of a retired navy officer as EVP provides credibility with defense clients and potential to accelerate capture on Navy and DoD opportunities, including integration with larger primes.

Strategic Positioning As a subsidiary of Epsilon Systems Solutions with C5I specialization, there is an opportunity to position for prime collaborations, security clearances, and expanded service offerings in systems engineering, cyber, and training for C5I modernization programs.

Similar companies to Epsilon C5I

Booz Allen Hamilton
37K$10B+
CACI INTERNATIONAL
35<$1M
L3Harris Technologies
31K$10B+
Lockheed Martin
114K$10B+
Serco
33K$1B - $10B
Northrop Grumman
88K$10B+
MANTECH
115$25M - $50M
Amentum
38K$10B+
General Dynamics
11K$10B+
BAE Systems
56K$10B+
Leidos
37K$10B+

Epsilon C5I Tech Stack

Epsilon C5I uses 8 technology products and services including SketchUp, WordPress, MongoDB, and more. Explore Epsilon C5I's tech stack below.

SketchUp
Cad & Graphics
WordPress
Content Management System
MongoDB
Database
PostgreSQL
Database
Microsoft Active Directory
Identity And Access Management
VMware vCenter
IT Infrastructure & Operations Management
Braze
Marketing Automation
Microsoft Teams
Team Collaboration

Media & News

Retired navy officer and U.S. Navy and defense industry veteran Mike Fabel joins Epsilon Systems as an executive vice president.
Retired navy officer Mike Fabel takes on EVP role at Epsilon Systems Solutions.
Jan 25, 2024 | executivebiz.com

Epsilon C5I's Email Address Formats

Epsilon C5I uses at least 3 email formats:

Epsilon C5I Email Formats	Example	Percentage
FLast@epsilonsystems.com	JDoe@epsilonsystems.com	95%
FirstLast@epsilonsystems.com	JohnDoe@epsilonsystems.com	4%
First.Last@epsilonsystems.com	John.Doe@epsilonsystems.com	1%

Frequently Asked Questions

What is Epsilon C5I's official website and social media links?

Epsilon C5I's official website is epsilonsystems.com and has social profiles on LinkedIn.

How much revenue does Epsilon C5I generate?

As of October 2026, Epsilon C5I's annual revenue is estimated to be $50M - $100M.

What is Epsilon C5I's SIC code and NAICS code?

Epsilon C5I's SIC code is 3761 - Guided Missiles and Space Vehicles and NAICS code is 336414 - Guided Missile and Space Vehicle Manufacturing.

How many employees does Epsilon C5I have currently?

As of October 2026, Epsilon C5I has approximately 149 employees across 1 continents, including North America. Key team members include Program Manager: J. J., Program Manager: C. R. and Senior Solutions Engineer: J. M. I. Explore Epsilon C5I's employee directory with LeadIQ.

What industry does Epsilon C5I belong to?

Epsilon C5I operates in the Defense and Space Manufacturing industry.

What technology does Epsilon C5I use?

Epsilon C5I's tech stack includes SketchUp, WordPress, MongoDB, PostgreSQL, Microsoft Active Directory, VMware vCenter, Braze and Microsoft Teams.

What is Epsilon C5I's email format?

Epsilon C5I's email format typically follows the pattern of FLast@epsilonsystems.com. Find more Epsilon C5I email formats with LeadIQ.

When was Epsilon C5I founded?

Epsilon C5I was founded in 1986.

Epsilon C5I

Q: What is Epsilon C5I's official website and social media links?

Epsilon C5I's official website is epsilonsystems.com. Epsilon C5I has social profiles on LinkedIn.

Q: How much revenue does Epsilon C5I generate?

Epsilon C5I's annual revenue is estimated to be $50M - $100M.

Q: How many employees does Epsilon C5I have currently?

Epsilon C5I has approximately 149 employees.

Q: What industry does Epsilon C5I belong to?

Epsilon C5I operates in the Defense and Space Manufacturing industry.

Q: What technology does Epsilon C5I use?

Epsilon C5I's tech stack includes WordPress, Microsoft Azure, Nortel, YAML, SOAP.

Q: When was Epsilon C5I founded?

Epsilon C5I was founded in 1986.

Q: What is Epsilon C5I's NAICS code?

Epsilon C5I's NAICS code is 336414 (Guided Missile and Space Vehicle Manufacturing).

Defense and Space ManufacturingCalifornia, United States51-200 Employees

Epsilon C5I, Inc. is based in San Diego, California, and operates in the defense and space manufacturing sector as a wholly owned subsidiary of Epsilon Systems Solutions, Inc. Its workforce comprises engineers and intelligence professionals who provide software development, systems engineering, cyber security, and training services to support C5I systems. By focusing on the integration of command, control, communications, computers, combat systems, and intelligence capabilities, the company supports complex defense programs.

The company serves defense and government customers that rely on C5I capabilities to maintain operational effectiveness. In January 2024, a development within the broader Epsilon organization was noted with the appointment of Mike Fabel as executive vice president at Epsilon Systems Solutions.