Career
Walker began his career with Hartlepool United and signed a professional contract with the club in July 2013. He made his Football League debut on 3 August 2013 in a 3–0 defeat away at Rochdale. Walker scored his first career goal in a 1–1 draw against Burton Albion in December 2013.
His form saw him nominated for the League Two Apprentice of the Year Award at the 2014 Football League Awards with Jack Whatmough and Ben Purrington.
In January 2016, Walker played as a triallist in a Wolverhampton Wanderers U-21"s game against Aston Villa. Walker was called up for an England under-18s training camp in November 2013 and again in December 2013.
Individual.