He was signed by the Las Vegas Raiders as an undrafted free agent in 2020 following his college football career with the Southern Illinois Salukis.

Harper signed with the Las Vegas Raiders as an undrafted free agent following the 2020 NFL draft on May 5, 2020.

[2] He was waived during final roster cuts on September 5, 2020,[3] and signed to the team's practice squad the next day.

[7] He terminated his practice squad contract with the Raiders on September 29 in order to sign with the New York Giants.

[21] On October 5, 2023, Harper signed with the Birmingham Stallions of the United States Football League.