Since 1998, Warren has been coaching soccer in various capacities throughout the Twin Cities in Minnesota. From 1998–2003, Warren was the varsity assistant girls' soccer coach at Richfield High School. From 2004–2009, he was the assistant men's soccer coach at St. Olaf College in Northfield, MN. From 2010–2012, Warren served as assistant girls' varsity coach at Edina High School. From 2007-2019, Warren was a club coach at Minneapolis United Soccer Club. He currently coaches club soccer at the North Suburban Soccer Association (NSSA).