Johnson attended Vaughan Road Academy in Toronto, Ontario, where he was considered one of the top perimeter players of his class in Canada.

Despite having an injury interfere with his playing time towards the end of the season, Johnson had the 17th-best three-point field goal percentage in school history, shooting .416 from beyond the arc.

[6] After leading the Mississauga Power franchise to its first playoff appearance in their inaugural season, Johnson returned for a second year to continue the momentum.

In the 2014–15 season, Johnson had additional help with the re-signing of NBL Canada All-Star Morgan Lewis and re-acquirement of Tut Ruach.

[9] On December 16, 2015, Johnson signed with the newly formed Halifax Hurricanes in the NBL Canada.

[15] In the 2018–19 season, Johnson played for the London Lightning and averaged 9.4 points, 2.9 rebounds, and 3.7 assists per game.

[18] On April 16, 2014, the Toronto Raptors of the National Basketball Association (NBA) unveiled their new commercial to showcase their new marketing campaign, We The North.