Brewer got his first career coaching job in 2013 as a graduate assistant for the Auburn Tigers.[1] For the 2016 season, Brewer was promoted by the Tigers to become an offensive analyst for the team.[2] In 2017, Brewer decided to join the UConn Huskies as an offensive analyst for the team.[3] For the 2018 season, Brewer was hired by the SMU Mustangs to serve as an offensive quality control coach and offensive analyst.[4] In 2020, Brewer was hired by the Miami Hurricanes to serve as an offensive quality control coach.[5] In 2022, Brewer re-joined SMU this time as the team's quarterbacks coach.[6] After the 2022 season, Brewer was promoted by the Mustangs to serve as the team's co-offensive coordinator and quarterbacks coach.[7] On March 26, 2024, Brewer was named the offensive coordinator and quarterbacks coach for the Duke Blue Devils.[8]