He started his career with Danish 1st Division teams B.93 and Akademisk Boldklub. He moved to 1st Division rivals Vejle Boldklub in 2005, and helped Vejle win promotion for the Danish Superliga. When Vejle brought in experienced goalkeeper Jan Hoffmann, Rasmussen saw no more playing time, and left the club in the winter 2007.
He continued his career as an amateur with BK Frem, but soon left for Superliga club FC Nordsjælland in March 2008. He left Nordsjælland in December 2008 in order to seek more playing time elsewhere. He joined 1st Division team Kolding FC in January 2009, but injuries forced him to leave the club in August 2009.