Having shown potential to be a promising goalkeeper, Hansen was promoted to the Farum BK first team in January 2003 and signed his first contract extension in May 2003.
[2] He extended his stay at Ølstykke for an additional six months, where he was first choice goalkeeper for the team who were struggling to avoid regulation in the Danish 1st Division.
Nordsjælland in November 2005 as backup for first team choice Kim Christensen, playing for FCN's reserve side in the Denmark Series.
[4] In August 2007, having yet to make his league debut, with two first team appearances in cup competitions, Hansen renewed his contract for another four years.
He claimed to have turned down first team opportunities from 1st Division clubs, to instead be patient and wait for his chance with FCN, whom he credited for his football education.
[6] On 17 March 2008, head coach Morten Wieghorst gave Hansen his league debut, after almost five years as backup.
At the start of the 2009–10 season, Hansen broke his thumb, ending any chance of him retaking the first choice position as goalkeeper for the duration of the injury.
[10] Mid season, after some poor performances from Novaković, Hansen was given a chance to retake the goalkeeping position, with a start against AGF, he managed to keep a clean sheet in a 2–0 win and consequently returned as first choice for FCN.
Hansen retained his position as first choice the following 2010–11 season, with head coach Morten Wieghorst often praising his performances in the media.
Hansen as well as the team slowly improved throughout the season, gaining on their previous league finish with 6th and once again went to the finals of the Danish cup, lifting the trophy for a second consecutive time, in a 3–2 win over FCM.
Hansen's agent stating that he may leave the club on a transfer during the winter of 2011, or on a free when his contract expires in the summer of 2012.
[34] Hansen has stated that he has been a fan of Juventus since Zinedine Zidane moved to the Turin based club, and that his idol is Gianluigi Buffon.