 He graduated in 1984 and went on to graduate school at the University of California, Berkeley, receiving his Ph.D. in 1989.Since 2009, he has been one of three managing editors of the journal "Compositio Mathematica"; he is also on the editorial boards of Forum of Mathematics, Pi and Sigma, the Journal of the American Mathematical Society, and the Bulletin of the American Mathematical Society.In 2012, he became a Professor in the UCLA Department of Mathematics.