Jamison was born in Atlanta, Georgia, where he played youth soccer with Super Y League side Smyrna Impact United.[1][2] He later went on to join the Atlanta United academy.[3] Ahead of the club's 2021–22 season, Jamison made the move to the Barça Residency Academy in Arizona. Here he scored five goals in his first eight starts with the U-17 team. Jamison was moved up to the U-19 squad where he helped Barça win the MLS Next Southwest Division. He went on to finish with seven goals in 13 games with Barça's U-19s.[4] In July he was named to the MLS Next All-Star Team.[5]
Professional
On September 23, 2022, Jamison signed a professional multi-year contract with USL Championship side Orange County SC.[6][7] He made his professional debut on September 24, 2022, appearing as a 90th–minute substitute against Pittsburgh Riverhounds.[8] He scored his first professional goal on October 8, 2022, against El Paso Locomotive in a 2–1 loss.[9][10]