Hobby joins the Colts with 31 years of coaching experience. He was most recently hired as the defensive line coach at Arkansas after spending the 2025 season as a defensive analyst for his alma mater, Tennessee. He previously served as the defensive line coach for the Jacksonville Jaguars (2017-18), Miami Dolphins (2019-20) and Cincinnati Bengals (2021-24). Hobby was also the defensive ends coach for the New Orleans Saints from 2006-07.

In his time with the Bengals, Hobby worked under current Colts defensive coordinator Lou Anarumo and played a pivotal role in the development of defensive end Trey Hendrickson. Hobby oversaw Hendrickson as he became one of the best edge rushers in the league, compiling 57 sacks in 65 games and earning Pro Bowl recognition in four consecutive years. Hobby also helped the Bengals to Super Bowl LVI in 2022 and back-to-back AFC Division titles in 2021 and 2022.

Hobby earned his first defensive line coaching role at Ole Miss in 1999 and remained there through 2004, and he was the co-defensive coordinator/defensive ends coach at Clemson from 2011-16. He also spent time on the coaching staff at Duke (2008-10), Tennessee (1998), Louisiana-Lafayette (1996-97) and UT-Martin (1995).

The former defensive end and three-year starter for Tennessee was selected in the third round of the 1990 NFL Draft by the Minnesota Vikings; the Vikings then traded him to the New England Patriots, where he remained for three years (1990-92).