Who We Are

Epsilon C5I, Inc. is a team of over 250 experienced engineers and intelligence professionals who provide software development, systems engineering, cyber security, and training solutions to support Command, Control, Communications, Computers, Combat systems, and Intelligence (C5I) systems.

Helicopters and soldiers.

We are part of a 100% employee-owned company, which drives our culture toward client success. Employee-ownership helps us attract and retain top talent who are committed to excellence, innovation and continuous improvement, and helps us maintain long-term relationships with our valued clients.

Our Mission:

Our Mission

To provide software development, systems engineering, and training solutions to support intelligence, command and control, cyber, combat and information technology systems.

A man in a VR headset.

We Are Collaborative, Innovative, and Experienced

Epsilon C5I actively collaborates with clients, understands their operational needs, and delivers superior products and services. With locations across the nation, we can meet you where you are.

Our size allows us to be more innovative, agile, and faster than our larger industry colleagues. Epsilon C5I is a responsive and flexible partner determined to meet our clients’ needs.

Since 1986, Epsilon C5I professionals have provided innovative advanced products and services to government organizations and intelligence agencies, the U.S. military, and R&D centers.

Our Vision

Our Vision

Our vision is to provide unparalleled support to our clients and partners while empowering our employees. We seek to foster an environment of trust between our skilled subject matter experts and our client through demonstrated superior performance in system and software engineering, research and development, and intelligence.