Warren played college football for the San Diego State Aztecs. He was selected by Washington in the fourth round of the 1979 NFL draft and retired from playing following the 1992 season. After initially spending time working at Centreville High School as an assistant football and baseball coach, he later returned to the Redskins as a pro scout under former head coach Joe Gibbs. He later served as a pro scout for the Carolina Panthers from 2010 to 2019 before following head coach Ron Rivera back to Washington, spending the 2020–2021 seasons as a senior pro scout for the Washington Commanders before retiring from scouting.[1][2]
While with the Redskins, Warren was a member of three Super Bowl-winning teams, following the 1982, 1987, and 1991 seasons; additionally he was a member of the team that went to and did not win the Super Bowl following the 1983 season, a team which offensively set the record for number of points scored in one season, a record which remained for 15 years. Known as an excellent blocker, Warren was an original member of "The Hogs", a nickname given to the Redskins offensive line in the 1980s.
After retiring following the 1992 season, Warren spent several years as baseball and football coach for Centreville High School in Virginia.[3] In 2005, he rejoined the Redskins as a scout before joining the Carolina Panthers in 2010, serving as a scout for them until 2019. He rejoined Washington, known at the time as the Washington Football Team, as a senior pro scout in 2020.[4] Warren announced his retirement from scouting in June 2022.[3]