He played U Sports football for the Wilfrid Laurier Golden Hawks where he was the OUA Most Valuable Player in 2017.

[3][5] The Golden Hawks advanced in the playoffs that year to the Yates Cup and the team recorded the largest fourth quarter comeback in the history of the OUA championship game as they scored 24 unanswered points to win the game against the home team Western Mustangs.

[6] Gittens scored on a three-yard touchdown catch to tie the game at 40–40 and the Golden Hawks later kicked a game-winning field goal to secure the victory.

[6] Gittens had a breakout season in 2017 as he led U Sports football players in receptions with 75 and was second in the country with 953 receiving yards in eight games.

[3][9] For his outstanding 2017 season, Gittens was also named the OUA Most Valuable Player as the runner up to the U Sports Hec Crighton Trophy.

[17] In the first game of the 2021 Toronto Argonauts season against the Calgary Stampeders, on August 7, 2021, he scored his first professional touchdown on a 27-yard pass from McLeod Bethel-Thompson.

Gittens caught 81 passes, five of which were for touchdowns, and was named the East Division finalist for Most Outstanding Canadian:[20] BC Lions quarterback Nathan Rourke ended up winning the award.