The more than two-decade industry veteran will oversee GMSI's operations, growth and strategic efforts in his new position, the company said Tuesday.
His career includes prior roles as president at Promethean Light Group, chief technology officer at Preferred Systems Solutions and a program manager at WorldCom/MCI/Verizon, where he oversaw work under managed service contracts with the U.S. Postal Service and the Social Security Administration.
At PSS, Schaefer led the development of a help desk service for the U.S. Army.
Rockville, Maryland-based GMSI offers enterprise services to federal civilian and defense customers in the areas of cybersecurity, information technology, operational support and telecommunications.