He was formerly head of the Systemic Risk Group at Citigroup and a member of the firm's Risk Executive Committee. Previous to that, he was senior portfolio manager in Citi Principal Strategies, where he co-managed the relative value credit book. Before joining Citigroup, he held positions with Old Lane, Morgan Stanley, and Citicorp. He was also an assistant professor of finance at the Yale School of Management during the period 2000–02.