[2][3] Born to a German mother and a Nigerian father, Aogo grew up in Oberreut, a suburb in the south-west of Karlsruhe, Baden-Württemberg.

Since 2004, he was a part of the SC Freiburg academy, and celebrated his debut in the Bundesliga at seventeen years of age and he immediately won himself a place in the centre of midfield.

[6] Aogo joined signed at Bundesliga club Hamburger SV in 2008 and was part of the regular starting lineup, mostly as a left back.

[16] However, after turning down several invitations by the Nigerian Football Association he declared his desire to continue representing Germany as he saw a good chance to earn a place in the German senior squad in the future.

He made his debut for Germany in their first preparation game against Malta in a 3–0 victory on 13 May 2010, playing 79 minutes, before being replaced by fellow full-back and then Hamburg club mate Jérôme Boateng.