Following high school, Garand-Gauthier played as a quarterback for the Lionel-Groulx Nordiques in CEGEP.

[4] He made the team's active roster following training camp in 2021 and played in his first career professional game on August 5, 2021, against the Winnipeg Blue Bombers.

[2] He played as a backup fullback where he had his first career rushing attempt on October 10, 2021, against the Toronto Argonauts, that went for one yard on a failed third down conversion.

He recorded one special teams tackle and one fumble recovery in the 108th Grey Cup game, but the Tiger-Cats lost in overtime to the Blue Bombers.

[2] In 2022, Garand-Gauthier played in 17 regular season games where he had a more prominent role in the team's offence where he recorded nine receptions for 190 yards.