Backman started playing football for local Västerås team Skiljebo SK as a youth. He played with Skiljebo SK until 2008 when he was transferred to Väsby United in the Swedish second division Superettan. He played 56 games for the club and completed the 2009 season in style at Väsby keeping them in the Superettan. During the summer of 2009, his playing rights were transferred to AIK, but he continued playing matches for Väsby. He made no appearances for AIK during their championship-winning camapign. In 2010 he played his first match for AIK.