Having been with Hibs since the age of ten years-old, Aiken signed his first professional contract with the club in January 2021.
[2] He made his Scottish Premiership debut for Hibs on May 15, 2022 in a 4–0 win at home against St.
[5] Aiken joined Airdrieonians on loan ahead of the 2023–24 season.
[6] He made his debut for Airdrieonians on 15 July 2023, in the Scottish League Cup against Dumbarton.
[7] Aiken suffered an ankle injury against Dundee United at the end of October 2023, which kept him out the season until he returned against Queen's Park in the final game of the season.