He played college football at Southern and was signed by Washington as an undrafted free agent in 2018.

Johnson played college football at Southern University as a cornerback and return specialist.

[7][8][9][10] Johnson went unselected in the 2018 NFL draft, but signed an undrafted free agent contract with the Washington Redskins soon after.

[23] In Week 9 of the 2022 season, Johnson recorded his first career interception against the Minnesota Vikings off a pass deflected by Benjamin St-Juste in the end zone.

[25] Following first round rookie, Emmanuel Forbes, being benched in Week 5 and downgraded on the team's depth chart, Johnson was elevated into the defense's starting lineup.