ManTech will be a market leader, integral to the National Security mission, valued by its customers, respected by its competition, embraced by
its employees, and prized by its shareholders, through the delivery of advanced technologies, reliable services, and innovative solutions.
ManTech Systems Engineering Corporation (MSEC), a wholly owned subsidiary of ManTech International Corporation, is headquartered in Lexington Park, Maryland and has over 700 people in 15 U.S. and 7 overseas locations. We support Navy, Marine Corps, Air Force, Army, the Department of Homeland Security and other customers performing Training Development, Delivery and Support; Systems Engineering; Logistics and Management; Software Development; and Networks and Communications services. MSEC is a CMMI Level 3 Software and Systems Engineering Company.
