He has previously played for the Castleford Tigers and Hull FC in the Super League, and for the Bradford Bulls in the Championship.

[4] He began playing rugby league for local amateur side, West Bowling.

[7] In January 2017, Trueman was signed by the Castleford Tigers, joining the club on a two-year deal.

[12] In December 2017, Trueman signed a new three-year contract with Castleford, with head coach Daryl Powell labelling him "the most promising half-back in the English game".

[3] He performed consistently well throughout the season, cementing his place in the first team by appearing in all but 4 of Castleford's games.

[19] Injuries to teammates meant that he wasn't able to form a consistent partnership with any other halfback, starting alongside Jordan Rankin, Paul McShane, Peter Mata'utia, Cory Aston and Jamie Ellis at different points throughout the season.

[21][22] Trueman was named Man of the Match for his performance against the Toronto Wolfpack in the opening round of the 2020 season.

[23] His developing halfback combination with new Tigers signing Danny Richardson was widely lauded as an exciting and potentially long-term partnership for both club and country.