Lambert was hired as the head coach of the
Milwaukee Admirals of the
American Hockey League (AHL) in July 2007, a position he held until he was promoted as an assistant coach for the
Nashville Predators on June 9, 2011. He was also an assistant coach with the
Washington Capitals during their
2018 Stanley Cup run, however he signed with the
New York Islanders after head coach
Barry Trotz signed with the team in 2018. After Trotz's firing following the
2021–22 season, on May 16, 2022, Lambert was promoted to head coach of the Islanders. The Islanders fired Lambert on January 20, 2024, after the team started the 2023–24 season with a 19–15–11 record and were out of playoff contention at that time. On June 5, 2024, the
Toronto Maple Leafs announced that Lambert had been hired as an associate coach. On May 29, 2025, the
Seattle Kraken named Lambert the third head coach in the franchise's history. ==Awards==