Minor leagues After retiring in 2002 from his playing career, Hiller immediately began his coaching career as an assistant coach with the
Tri-City Americans of the
WHL for two seasons. In 2004–05, he was named head coach of the
Alberni Valley Bulldogs of the
British Columbia Hockey League (BCHL), where he coached two seasons and posted records of 32–20–6–2 and 43–12–3–2 respectively. The next season, he was selected to coach the expansion
Chilliwack Bruins back in the WHL. He coached the franchise to playoff berths in their first two seasons, but after missing the post-season in his third year with the club, he was fired. Later in the 2009 off-season, he was named head coach of the
Tri-City Americans. In 2010 the Americans reached the WHL championship series but lost to the
Calgary Hitmen. Hiller received WHL and CHL coach of the year honors for the
2011–12 season.
NHL On July 30, 2014, Hiller was hired by the
Detroit Red Wings as an assistant coach under Mike Babcock, overseeing the
power play. After one season in Detroit, Hiller followed Mike Babcock to the Toronto Maple Leafs, where he also had responsibility for the power play. On June 19, 2019, the New York Islanders announced Hiller would be joining their coaching staff as an assistant under Barry Trotz. One month after the Islanders fired Trotz and replaced him with Lane Lambert, Hiller was also relieved of his duties on June 9, 2022. On July 19, 2022, Hiller was hired as an assistant coach for the
Los Angeles Kings under
Todd McLellan. On February 2, 2024, Hiller was named interim head coach following the firing of McLellan. Under Hiller, the Kings made the playoffs and lost to the
Edmonton Oilers in five games. Following the
2023–24 season on May 22, Hiller was named the Los Angeles Kings' head coach. During the
2025 Stanley Cup playoffs in game 3 of the first-round series against the Oilers with the Kings having a 2–0 series lead, Hiller made a coach challenge's call on
Evander Kane's game-tying goal that was an unsuccessful challenge and that was criticized by the media. The Oilers ended up winning the game 7–4, and ultimately went on to win the next three games, eliminating the Kings for the fourth consecutive season. Despite being eliminated against the Oilers in the 2025 playoffs, new general manager
Ken Holland announced that Hiller would remain as head coach of the Kings for the 2025–26 season. On March 1, 2026, the Kings fired Hiller after the team compiled a 24–21–14 record, including a 2–5–1 record in Hiller's final eight games. Associate coach
D. J. Smith was named interim head coach. ==Career statistics==