[1] He had previous loan spells with Airdrieonians and Queen of the South.
[3][4] In February 2023, Johnson signed a new four-year contract with Hibernian.
[5] Johnson joined Queen of the South on a planned season-long loan prior to the start of the 2023-24 season.
[6] He made his debut for Queen of the South on 22 July 2023 in the Scottish League Cup against Elgin City,[7] although he was recalled and the loan cancelled by his parent club on 4 August 2023 after two of their other goalkeepers were injured in a midweek European match.
[8] On 14 June 2024, Johnson returned to Airdrieonians, now in the Scottish Championship, on a season-long loan.