Prior to joining the Jags, Moeller served as interim head coach of the Detroit Lions from Nov. 6, 2000 to Jan. 25, 2001, replacing Bobby Ross, who retired at midseason in 2000. Moeller was named Lions linebackers coach in 1997 and moved up to assistant head coach in 2000.
Moeller succeeded legendary University of Michigan head coach Bo Schembechler in Ann Arbor, leading the Wolverines to a 44-13-3 record from 1990-94, claiming three Big Ten titles and four New Year's Day bowl wins.
Moeller began his coaching career in 1964 at Bellefontaine (Ohio) High School, where he spent three years before joining Schembechler as an assistant at Miami of Ohio. Moeller moved to Michigan with Schembechler in 1969, serving as the defensive ends coach and was promoted to defensive coordinator in 1973. In 1977 he was named head coach at the University of Illinois and returned to Michigan after three seasons to coach quarterbacks. During his second stint at Michigan he held both defensive and offensive coordinator positions.