Mr. Nimetz is an Advisory Director at General Atlantic, a leading global growth equity firm, where he was a Managing Director and Chief Operating Office of General Atlantic from 2000 through 2011.

Prior to joining General Atlantic in January 2000, Mr. Nimetz was a partner (and former chair) of the law firm of Paul, Weiss, Rifkind, Wharton & Garrison in New York City, where he concentrated on corporate, securities, financing and international law from December 1980 through January 2000. He previously practiced law as an associate, and partner, of Simpson Thacher & Bartlett between 1969 and 1977.

Mr. Nimetz served as Under Secretary of State for Security Assistance, Science and Technology from February through December 1980 and as Counselor of the Department of State (1977-1980). In those capacities, he supervised United States security assistance programs and the Department's international scientific and technological programs, including scientific and technical cooperation, nuclear nonproliferation issues, and international environmental and communications policies of the U.S. Government. He also supervised, among other things, U.S. policy on the Eastern Mediterranean (Greece, Turkey, Cyprus) and relationships with Eastern European countries.

From March 1994 through September 1995, Mr. Nimetz served as President Clinton's Special Envoy in the mediation of a dispute between Greece and the Former Yugoslav Republic of Macedonia. In 1999 he was appointed the Special Representative of the Secretary General of the United Nations in connection with the continuing negotiations between those two parties and continues to serve in that capacity.

His previous federal government positions include service as a Staff Assistant to President Lyndon Johnson from July 1967 to January 1969; and as a law clerk to Justice John M. Harlan of the Supreme Court of the United States from 1965 to 1967. In addition, Mr. Nimetz served as a Commissioner of the Port Authority of New York and New Jersey (1975 to 1977), and as Chairman of the United Nations Development Corporation (a New York City public corporation) as an appointee of Mayors Koch and Dinkins (1986-1994). He served in 1974 as executive director of NY Governor-elect Hugh Carey's transition.

Mr. Nimetz received degrees from Williams College and the Harvard Law School where he was president of the Harvard Law Review. He also has an M.A. from Balliol College, Oxford University, where he was a Rhodes Scholar.

Mr. Nimetz serves as a member of the Council on Foreign Relations, member and former chair of the Center for Democracy and Reconciliation in Southeast Europe, a trustee of both Central European University and American University of Central Asia, chair of the SUNY Levin Institute, a director of Green City Force, a Brooklyn-based training organization for youths, a trustee of the Rubin Museum of Art, a trustee of National Committee on American Foreign Policy, a director of Americans for Oxford, Inc., and a member of the Advisory Committee of the Center for Development Economics at Williams College.  He is also a director of Renren, Inc., a China-based social networking company listed on the NYSE, and of Knight Capital Group, Inc. He served previously as founding chair of World Resources Institute, a trustee of Williams College, a director of The Charles H. Revson Foundation, a trustee of Committee for Economic Development, and a director of The Nature Conservancy of New York, and several corporations.

Mr. Nimetz is married and has a daughter and a son.