Career
He played for Gillingham between 1977 and 1981, making 51 appearances in the Football League. He also briefly played for Bohemians, before quitting the professional game and moving to Sweden. International career
Walker earned two caps for the Republic of Ireland U21 side.
Walker was coach of Varbergs BoIS, GIF Sundsvall between 2000 and 2004 and brought them to their highest league finish in the Allsvenskan to date.
In 2005 he took over as manager of Örebro Saskatchewan and helped them gain promotion to the Allsvenskan, before moving to Norway and Norwegian First Division club Sandefjord Fotball. He guided Sandefjord to their best league finish in the history of the club in 2010.