Career
Doğan began his professional at 2. Bundesliga side VfL Osnabrück in 2003. After one season, he transferred to his hometown club VfB Lübeck.
After three years in Lübeck, Doğan joined Eintracht Braunschweig in 2007, then playing in the Regionalliga Nord.
He went on to play eight seasons for Braunschweig, wearing the number 8. Bundesliga in 2011 and into the Bundesliga in 2013.
On 10 August 2013, Doğan made his debut in the German first-tier, in a match against SV Werder Bremen. Doğan retired from professional football at the end of the 2014-2015 season.
Foreign the 2015-2016 Regionalliga season, Doğan joined the staff of Eintracht Braunschweig"s reserve team as playing assistant manager.
In October 2015, he temporarily returned into the club"s first team, which was missing several players due to injuries or suspension at the time.