Insights

Defense C5I Focus Target Epsilon C5I’s core strengths in software development, systems engineering, cyber security, and training for C5I systems to align with potential end-markets such as military C4ISR programs, platform modernization, and intelligence data fusion initiatives.

Mid-Sized Driver Leverage their scale of 51-200 employees to position tailor-made, nimble solutions that can complement larger primes; emphasize rapid delivery, flexible resourcing, and lower onboarding friction compared to mega vendors.

Security & Compliance Emphasize capabilities in cyber security and secure systems engineering to pursue opportunities in defense contractors and government agencies requiring robust security classifications, risk management, and compliance tooling within C5I ecosystems.

Leadership & Expertise Pursue relationships or subcontracts with Epsilon Systems Solutions, leveraging their executive leadership connections (e.g., recent EVP appointment) to access program leadership, capture management, and strategic account opportunities.

Tech Stack Fit Position offerings around their technology footprint (MongoDB, PostgreSQL, ServiceNow, VMware, Active Directory) for modernization, data integration, and IT services within defense and space programs, including programmatic data management and enterprise IT services.

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.

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

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

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

How much revenue does Epsilon C5I generate?

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

What is Epsilon C5I's SIC code NAICS code?

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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?

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As of August 2026, Epsilon C5I has approximately 148 employees across 1 continents, including North America. Key team members include Program Manager: J. J.Program Manager: C. R.Senior Solutions Engineer: J. M. I.. Explore Epsilon C5I's employee directory with LeadIQ.

What industry does Epsilon C5I belong to?

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Epsilon C5I operates in the Defense and Space Manufacturing industry.

What technology does Epsilon C5I use?

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Epsilon C5I's tech stack includes SketchUpWordPressMongoDBPostgreSQLMicrosoft Active DirectoryVMware vCenterBrazeMicrosoft Teams.

What is Epsilon C5I's email format?

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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?

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Epsilon C5I was founded in 1986.
Epsilon C5I logo

Epsilon C5I

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.

Section iconCompany Overview

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

  • $50M - $100M

    Epsilon C5I's revenue is estimated to be in the range of $50M - $100M

Section iconFunding & Financials

  • $50M - $100M

    Epsilon C5I's revenue is estimated to be in the range of $50M - $100M

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