ECS has been named a prime contractor on a $1.25 billion, five-year contract to provide technical, analytical, and program support services to the Defense Advanced Research Projects Agency (DARPA). The DARPA Technical and Analytical Support Services (TASS) indefinite delivery/indefinite quality (IDIQ) contract covers a broad range of high-level advisory and assistance services designed to help DARPA meet the needs of its dynamic research and development mission. As an agency of the U.S. Department of Defense (DoD), DARPA's mission is to develop breakthrough technologies for national security by working with partners inside and outside of the federal government.

ECS is a respected partner in all the DARPA technical offices, with prime task orders in DARPA's Defense Science Office (DSO), Strategic Technology Office (STO), Microsystems Technology Office (MTO), and Contracts Management Office (CMO).