College and juniors During his time as a teacher at Archbishop Williams, Muse also served as an assistant coach for
Milton Academy's ice hockey team in nearby
Milton. He subsequently left his teaching career to coach full-time, spending the
2007–08 season working as an assistant coach at Division III
Williams College under
Bill Kangas, before jumping to
NCAA Division I with
Sacred Heart of the
Atlantic Hockey conference for the
2008–09 season. and the program's first national championship in
2013. Following the
2014–15 season, Muse departed the Bulldogs to take his first head coaching job with the
Chicago Steel of the
junior-level
United States Hockey League (USHL). In three seasons with Nashville, Muse primarily ran the team's
penalty kill, and coached multiple other future NHL players, including
Logan Cooley and
Rutger McGroarty. Once again coaching the penalty kill, Despite this, Muse was reportedly offered the opportunity to interview with the new Rangers coaching staff.
Pittsburgh Penguins On June 4, 2025, Muse was named head coach of the NHL's
Pittsburgh Penguins, succeeding
Mike Sullivan as the 23rd head coach in franchise history.
International Muse's first work with
USA Hockey came at the
2013 World Junior Championships with the
United States men's junior team, where he served as video coach; after the U.S. won the gold medal, he subsequently reprised the role for the
2014 tournament. winning a gold medal in the latter. ==Personal life==