He holds a Ph.D. in Statistics from Harvard University. He is the recipient of 2013 Tweedie New Researcher Award given by the Institute of Mathematical Statistics and a recipient of the 2009 Best Publication in Applied Probability Award given by the INFORMS Applied Probability Society. He has research interests in statistics, psychometrics, applied probability, and Monte Carlo methods. He currently serves on the editorial boards of Psychometrika, British Journal of Mathematical and Statistical Psychology, Journal of Applied Probability/Advances in Applied Probability, Extremes, Operations Research Letters, and STAT.