Epsilon Systems Solutions is a 100% employee-owned engineering company headquartered in San Diego, California. Since its founding in 1998, Epsilon Systems has been a multifaceted professional and technical services corporation committed to delivering exceptional products and services to its global clientele in the defense and commercial sectors. The company offers comprehensive life-cycle support for defense systems, spanning research, analysis, concept development, system architecture, engineering, software development, specialized product design, assembly, testing, operational support, training and education solutions, as well as maintenance and logistics. Operating across over 20 locations nationwide, Epsilon Systems is at the forefront of innovation, serving clients spanning the Department of Defense, Department of Energy, Department of Homeland Security, as well as nonprofit and commercial organizations.

In 1999, Epsilon Systems became employee-owned when they established an Employee Stock Ownership Plan (ESOP). Epsilon Systems' values exemplify its commitment to exceeding expectations for clients, employees, and business partners alike. The company's dedicated team of employee owners work toward a shared mission that uniquely motivates them to do their best work. Employees actively share in both the risks and rewards of the company, demonstrating a personal commitment to its growth and success.