I am a research scientist at the L3S Research Center and a Ph.D. student at the University of Hannover's Computer Science Department. I received my master degree in computer science from Saarland University, Saarbrücken, Germany in 2006.

My main research topics are Semantic Web, Social Web, automated reasoning, and knowledge representation. My research interests include Privacy on the Social Web, Semantic Web policies, policy-driven Trust Negotiation, Preference handling, Reactivity on the (Semantic) Web, Non-monotonic reasoning, and Answer Set Programming.