Professor of Mathematics at ETH, Zurich, he received his PhD from Tel Aviv University in 1999 and had appointments in Princeton University, the Institute for Advanced Studies and in UCLA. He serves on the editorial boards of more than a dozen international technical journals and has given invited lectures in many conferences, including invited address at the 2010 International Congress of Mathematicians. He published more than two hundred research papers. His main research interests are Algebraic and Probabilistic Methods in Combinatorics, Extremal Graph and Hypergraph Theory, Ramsey Theory, Random Structures and Application of Combinatorics to Theoretical Computer Science. He is an AMS Felow and is recipeient of a Sloan Fellowship, NSF CAREER Award and Humboldt Research Award.