[1] Johnson began attending the University of North Dakota in the fall of 2014 and served as the backup to Zane McIntyre during his freshman year.

He helped the program cruise to one of the more dominant postseason performances, winning the 8th national title in team history.

[5] Having claimed the Kelly Cup in the ECHL with the Florida Everblades during the 2021–22 season, Johnson left the Blue Jackets as a free agent in the off-season.

On July 20, 2022, Johnson was signed to a one-year AHL contract with the Charlotte Checkers, the affiliate to the Everblades.

[7] On July 30, 2024, Johnson was signed to a one-year AHL contract with the Springfield Thunderbirds, the primary affiliate to the St. Louis Blues.