John Chambers is a managing director at Standard & Poor's, Credit Market Services division. Since 1997, he has been the deputy head of Standard & Poor's Sovereign Ratings Group. In 2005, he was named chairman of the group's sovereign rating committee. This committee, which consists of senior sovereign analysts, sets and changes ratings for the 126 central governments rated by Standard & Poor's as well as for a score of multilateral and sub regional development banks, and over two dozen national development banks, import-export banks, and other public policy financial institutions.

Before joining the Sovereign Ratings Group, from 1993 to 1997, John led Standard & Poor's efforts in expanding its ratings among Latin American financial institutions. He wrote often on the subject of the contingent liabilities posed by financial systems to the sovereign.

Before joining Standard & Poor's, John worked for Banque Indosuez from 1986 to 1993. He was posted to Paris from 1989 to 1992, where he was a sous directeur and assistant comptroller. He returned to New York as a first vice president for Banque Indosuez, in charge of its departments for credit financial institutions, and private placements.

Before Banque Indosuez, John worked in the international department of European American Bank, rising to the rank of vice president from management trainee.

John is a chartered financial analyst. He has his masters of arts from Columbia University in English literature and his bachelor of arts from Grinnell College in English literature and philosophy.