After three years in Lübeck, Doğan joined Eintracht Braunschweig in 2007, then playing in the Regionalliga Nord.

On 10 August 2013, Doğan made his debut in the German first-tier, in a match against SV Werder Bremen.

[5] For the 2015–16 Regionalliga season, Doğan joined the staff of Eintracht Braunschweig's reserve team as playing assistant manager.

[6] 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.

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