Insights

Niche Defense Expertise Epsilon C5I specializes in providing advanced software development, systems engineering, and cyber security solutions specifically tailored for C5I (Command, Control, Communications, Computers, Combat systems, and Intelligence) systems within the defense and space industry, presenting opportunities to enhance their technological capabilities.

Growing Leadership Team The recent appointment of retired Navy officer Mike Fabel as EVP indicates a strategic emphasis on leveraging military experience to strengthen leadership and expand industry influence, opening avenues for targeted executive engagement and partnership opportunities.

Mid-Sized Innovation Player With a workforce of 51 to 200 employees and annual revenues between 25 and 50 million dollars, Epsilon C5I occupies a unique position—large enough to deliver complex solutions but still agile for innovative product development and modernization projects.

Technology Stack Compatibility Epsilon C5I utilizes a broad range of technologies including GitLab CI, scikit-learn, and Autodesk, indicating potential for collaborative projects in AI, machine learning, and engineering tools—areas ripe for providing advanced IT solutions or integration services.

Potential for Larger Contract Opportunities As a subsidiary of Epsilon Systems Solutions, Inc., and given their focus on specialized defense systems, there are opportunities to position complementary solutions or services that support large-scale defense contracts and government programs looking to enhance operational capabilities.

Epsilon C5I Tech Stack

Epsilon C5I uses 8 technology products and services including GitLab CI, Font Awesome, scikit-learn, and more. Explore Epsilon C5I's tech stack below.

  • GitLab CI
    Continuous Integration
  • Font Awesome
    Font Scripts
  • scikit-learn
    Machine Learning
  • Microsoft
    Miscellaneous
  • Windows Server 2012
    Operating Systems
  • PHP
    Programming Languages
  • JavaScript
    Programming Languages
  • Autodesk
    Visualisation Software

Epsilon C5I's Email Address Formats

Epsilon C5I uses at least 1 format(s):
Epsilon C5I Email FormatsExamplePercentage
FLast@epsilonsystems.comJDoe@epsilonsystems.com
95%
FirstLast@epsilonsystems.comJohnDoe@epsilonsystems.com
4%
First.Last@epsilonsystems.comJohn.Doe@epsilonsystems.com
1%

Frequently Asked Questions

Where is Epsilon C5I's headquarters located?

Minus sign iconPlus sign icon
Epsilon C5I's main headquarters is located at San Diego, California United States. The company has employees across 2 continents, including North AmericaAsia.

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

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

What is Epsilon C5I's SIC code NAICS code?

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

How many employees does Epsilon C5I have currently?

Minus sign iconPlus sign icon
As of February 2026, Epsilon C5I has approximately 127 employees across 2 continents, including North AmericaAsia. Key team members include Chief Scientist: A. I.Director: B. S.Senior Logistics Manager: D. F.. Explore Epsilon C5I's employee directory with LeadIQ.

What industry does Epsilon C5I belong to?

Minus sign iconPlus sign icon
Epsilon C5I operates in the Defense and Space Manufacturing industry.

What technology does Epsilon C5I use?

Minus sign iconPlus sign icon
Epsilon C5I's tech stack includes GitLab CIFont Awesomescikit-learnMicrosoftWindows Server 2012PHPJavaScriptAutodesk.

What is Epsilon C5I's email format?

Minus sign iconPlus sign icon
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?

Minus sign iconPlus sign icon
Epsilon C5I was founded in 1986.

Epsilon C5I

Defense and Space ManufacturingCalifornia, United States51-200 Employees

Epsilon C5I, Inc. is a team of nearly 150 experienced engineers and intelligence professionals that provide software development, systems engineering, cyber security, and training solutions to support Command, Control, Communications, Computers, Combat systems, and Intelligence (C5I) systems.
Epsilon C5I is a wholly owned subsidiary of Epsilon Systems Solutions, Inc.

Section iconCompany Overview

Headquarters
San Diego, California United States
SIC Code
3761 - Guided Missiles and Space Vehicles
NAICS Code
336414 - Guided Missile and Space Vehicle Manufacturing
Founded
1986
Employees
51-200

Section iconFunding & Financials

  • $25M$50M

    Epsilon C5I's revenue is estimated to be in the range of $25M$50M

Section iconFunding & Financials

  • $25M$50M

    Epsilon C5I's revenue is estimated to be in the range of $25M$50M

Ready to create more pipeline?

Get a demo and discover why thousands of SDR and Sales teams trust
LeadIQ to help them build pipeline confidently.

© LeadIQ, Inc. All rights reserved.