 He is a FIFA referee, and is ranked as a UEFA elite category referee.Aytekin refereed his first Bundesliga match on 27 September 2008 when Hertha BSC played FC Energie Cottbus in Berlin.Energie Cottbus won the game 1–0, and Aytekin gave out four yellow cards, including one to Cottbus goalkeeper Gerhard Tremmel for time-wasting in the 90th minute.