Frazier began his coaching career at Samford as a defensive quality control during the 2015 spring season.
At the recommendation of his former college teammate, Frazier was hired by the Indianapolis Colts as the assistant to head coach Frank Reich in 2018.
[3] In 2022, he became the offensive play caller for the Colts after Jeff Saturday was hired as the interim head coach following Reich's firing.
[4] On February 15, 2023, Frazier was hired by the Carolina Panthers to serve as the team's passing game coordinator.
[5] Frazier is married to Caroline Cann, a former reporter for the Colts' website.