He played for the Widnes Vikings in the Super League, and has spent time on loan from Warrington at the Rochdale Hornets in the Championship.

[citation needed] In 2017 he made his Super League début for the Widnes Vikings against the Leigh Centurions.

[3] Walker played 23 games in the 2022 Super League season for Warrington which saw the club finish 11th on the table and narrowly avoid relegation.

[4] On 8 June 2024, Walker played in Warrington's 2024 Challenge Cup final loss against Wigan.

[5] Walker played 27 matches for Warrington in the 2024 Super League season as the club reached the semi-final before losing to Hull Kingston Rovers.