My research interests are on the interface of economic theory, computer science and mathematical optimization. In particular I am interested in behavioural, game theoretical, and algorithmic aspects of market design. My contributions have been on foundations of market design (implementability of allocation rules, revenue equivalence, communication complexity in auctions) as well as on applications, e.g. public good provision, ad auctions and scheduling. In the past I have published on various topics in combinatorial optimziation, as well as software architectures for scientific cloud computing.