| ||Received a Ph.D. in Computer Science from the University of Bonn in 1997 and subsequently held postdoctoral positions at MIT and at UC Berkeley and the International Computer Science Institute.
|1999-2004|| Assistant and then Associate Professor in the Computer Science Department at Brown University.
|2004-2006|| Held a position as a Professor of Computer Science at the Technical University of Darmstadt, while also serving as the Director of the Fraunhofer Institute for Integrated Publication and Information Systems. He is also co-founder and former Chief Scientist of Recommind Inc, a privately owned company focusing on enterprise search.
|since 2006|| Director of Engineering at Google and one of the site leads of Google's engineering center in Zurich, Switzerland. His scientific interests are in machine learning, information retrieval, and computer vision.|