Hart grew up in Roswell, Georgia and attended King's Ridge Christian School in Alpharetta, Georgia, where he played both football and baseball. In baseball, Hart was coached by former Major Leaguer Dallas McPherson and as a senior scored the winning run for King's Ridge in the 2015 Georgia High School AssociationClass A state championship game. In football, Hart was named first team All-Region as a junior at running back and again as a senior as an athlete after playing running back and then moving to quarterback for the final three games of the season. In his final high school game, Hart rushed for 390 yards and seven touchdowns while also passing for 162 yards and another score.
College career
Hart spent four seasons as a member of the Georgia State Panthers. In his first collegiate season, Hart had 71 receptions for 1,099 yards and eight touchdowns and was named the Sun Belt Conference Freshman of the Year and first team All-Sun Belt, and was also named Freshman All-American by the Football Writers Association of America. Hart entered his sophomore season on the Fred Biletnikoff Award watchlist, but eventually had to redshirt after suffering a hamstring injury in training camp and then breaking his foot in the fourth game of the season against Appalachian State. As a redshirt sophomore, he caught a school record 74 passes for 1,121 yards and eight touchdowns and was again named first team All-Sun Belt. The following season, Hart recorded 49 catches for 669 yards and two touchdowns, as well as 15 kickoffs returned for 299 yards and nine punts returned for 158 yards and a touchdown, and was named third team All-Sun Belt. Hart declared himself eligible for the 2019 NFL Draft, forgoing his final season of NCAA eligibility. Hart finished his collegiate career with 203 receptions for 2,960 yards, both second in Georgia State history, and a school-record 19 receiving touchdowns. Following his final season Hart received an invitation to participate in the 2019 Senior Bowl, where he impressed NFL scouts in practice and caught one pass for seven yards in the actual game.
Hart was signed to the Seattle Seahawks practice squad on October 22, 2019 following a workout with the team. He signed a reserve/future contract with the Seahawks on January 14, 2020.
