White was selected in the fifth round of the 2018 NFL draft by the Dallas Cowboys, where he spent one season, before joining the New York Jets the following year.

He did not become a starter at quarterback until his senior season, passing for 2,201 yards, 22 touchdowns and two interceptions and led his team to victory in the 3A state championship.

[citation needed] White started five games as a true freshman at South Florida in 2013, but struggled, only completing 93 of 175 passes for 1,083 yards with three touchdowns and nine interceptions.

[6] In 2015, White transferred to Western Kentucky University after South Florida head coach Willie Taggart switched from a pro-style attack to a spread offense.

[11] On January 27, 2018, White completed 8 of 11 pass attempts for 128-yards and two touchdowns as part of Houston Texans head coach Bill O'Brien's South team that defeated the North 45–16 in the 2018 Senior Bowl.

[14] On March 30, 2018, White participated at Western Kentucky's pro day, but opted to stand on his combine numbers and only performed positional and passing drills.

He attended a pre-draft visits with the Indianapolis Colts, Tennessee Titans, and Miami Dolphins and also performed a private workout for the New England Patriots.

[15] At the conclusion of the pre-draft process, White was projected to be a third or fourth round pick by the majority of NFL draft experts and scouts.

[24] The Cowboys opted not to add him to the practice squad, choosing instead to sign rookie quarterback Clayton Thorson.

[41] After an injury to starting quarterback Zach Wilson early in the 2nd quarter of a Week 7 matchup against the Patriots,[42] White made his regular season debut.

[43] Early in the 3rd quarter, he led another touchdown drive, but the Jets missed the two point conversion which would have made it a two score game.

[45] White briefly left due to a head injury but returned,[46] finishing the game completing 37 of 45 passes for 405 yards, 3 touchdowns, and 2 interceptions as the Jets won 34–31.

[52] White subsequently passed for 369 yards the following week against the Minnesota Vikings, rushing for a touchdown but also tossing two interceptions and struggling in the red zone for much of the game.

[56] White returned as a starter in week 17 against the Seattle Seahawks, but struggled as he passed for 240 yards with two interceptions and a fumble lost in a 6–23 defeat.

[60] On August 28, 2024, White signed with the Buffalo Bills on their practice squad, with primary backup quarterback Mitchell Trubisky expected to miss the early part of the season due to injury.