Miller began his coaching career at the
University of Oregon in 2008. After interning for the first year, he was promoted to graduate assistant for 2009 and 2010. Offensive coordinator
Chip Kelly succeeded
Mike Bellotti as head coach in Oregon in 2009 and revolutionized Oregon's offense, leading to an appearance in the
2011 BCS National Championship Game at the end of the 2010 season. Recalled Miller, "I know sometimes as a play-caller, you think, 'Aw, they’re going to get onto us at some point,' but he just went after you until you stopped it." Miller departed Oregon after the 2010 season to become an assistant under
Sean McDonnell at the
University of New Hampshire. Kelly, himself a veteran of McDonnell's staff, recommended Miller for the opening. Miller spent a decade at New Hampshire. For the 2011 season, he coached
guards and centers. He was promoted in 2012, gaining responsibility for the entire
offensive line. UNH added the title of "running game coordinator" in 2016. Miller returned to his alma mater in 2021, succeeding Micah James as offensive line coach under third-year head coach
Walt Bell. UMass fired Bell in November 2021, following a loss to
Rhode Island, and named Miller interim head coach. Head coach Don Brown again named him offensive line coach in December, 2021. ==Personal life==