Johnson spent five years playing baseball at the collegiate level at NAIA Vanguard University from 2018 to 2022. He played 241 games in college, batting .304, launching 44 home runs, and recording 196 RBI. Upon graduation, Johnson was picked up by the Monterey Amberjacks of the Pecos League, where he played in 13 games, batting .583, hitting eight home runs, and recording 30 RBI. During the same season in 2022, he made the jump to the American Association, playing for the Cleburne Railroaders for four games, where he had 15 at-bats and one hit. Johnson found a consistent home for the 2022 season, playing in 62 games for the Grand Junction Rockies of the Pioneer League. He bat .320 for the Rockies in 2022, hitting 10 home runs and recording 41 RBI. He returned to Grand Junction for the 2023 season, where he was the only player to participate in all 96 games. Johnson had his best professional season to date, hitting .370, with 35 doubles, 22 home runs, and 106 RBI. After a remarkable 2023 season, Johnson moved to the Frontier League for 2024, playing in 92 games for the Windy City ThunderBolts. While in Windy City, Johnson bat .230, hitting six home runs and recording 48 RBI.