Commissioner, New York City Charter Revision Commission, 2001
New York City Chief Procurement Officer & Director, New York City Mayor's Office of Contracts (now Mayor’s Office of Contracts Services), 1998-2000
Executive Director, New York City Charter Revision Commission, 1999
Deputy Commissioner, Litigation & Rate Regulation, New York City Trade Waste Commission (now Business Integrity Commission), 1996-1998
Chief, Environmental Protection Unit, U.S. Attorney's Office, Southern District of New York, 1994-1996
Assistant U.S. Attorney, Southern District of New York, 1989-1994