Garteig played for the
Powell River Kings and the
Penticton Vees in the
British Columbia Hockey League for four seasons. He won the BCHL Top Goaltender Awards in 2011 and 2012, and was a member of the
2012 Royal Bank Cup-winning Penticton Vees team. Garteig then played collegiate hockey for the
Quinnipiac Bobcats. He burst onto the scene after his freshman year. It culminated in leading the Bobcats to the ECAC championship and the NCAA finals during his fourth season, in which Quinnipiac was defeated by the University of North Dakota. He turned in his finest collegiate season that year, posting a 32–4–7 record, .924 save percentage and 1.91 goals against average. During his four seasons with Quinnipiac, he amassed a record of 78–25–16 with a 1.98 goals against average and a .917 save percentage. After his fourth year at Quinnipiac University, Garteig signed a one-year entry-level contract with the
Vancouver Canucks, and was earmarked for the Canucks'
American Hockey League affiliate, the
Utica Comets, for the
2016–17 season. After participating as a prospect at the Vancouver Canucks' 2016 Development camp, Garteig joined Utica on September 29, 2016. but was reassigned to the
Alaska Aces of the
ECHL. On November 17, 2016, he was called up by the Canucks from the Aces, but on November 19, 2016, Canucks Media announced that he would return to the Aces. As a free agent from the Canucks, Garteig opted to remain within the organization by signing a one-year AHL contract to continue with the Utica Comets on August 24, 2017. Following his third North American professional season, primarily playing in the ECHL and claiming the
Kelly Cup with the
Newfoundland Growlers, Garteig embarked on a European career by signing with top flight
Finnish club,
Tappara of the
Liiga on June 19, 2019. In the following
2019–20 season, as Tappara's starting goaltender, Garteig collected 15 wins through 39 regular season games. Helping the club finish the regular season in third place in the standings the playoffs were then cancelled due to the
COVID-19 pandemic. Leaving Tappara at the conclusion of his contract, Garteig remained in Europe to sign a one-year contract for the
2020–21 season with German club, ERC Ingolstadt of the DEL, on September 8, 2020. After completing his fourth season with ERC Ingolstadt, Garteig left the club and was signed to a one-year contract with fellow German outfit, Augsburger Panther, for the
2025–26 season on April 27, 2025. ==Career statistics==