[1] Baker was hired as a graduate assistant at Texas in 2010, working under Longhorns defensive coordinator Manny Diaz.
After Harsin departed to accept the head coaching position at his alma mater Boise State in 2014, Baker was hired to be the Broncos director of player personnel.
[6][7] Baker was named the defensive coordinator at the University of Miami by head coach Manny Diaz in January 2019.
[12] After a month on the job, Steve Wilks returned to the NFL, and Baker was promoted to defensive coordinator.
[13] On January 6, 2024, Baker was officially announced as the next defensive coordinator at LSU, where he received a $2.5 million-per-year contract that will make him the highest-paid assistant coach in college football at the time.