Career
He was first elected on November 6, 2001, and was reelected in 2003 and 2005. On March 2, 2007, he announced that he would not be seeking a fourth term as mayor in the November 2007 election. He was replaced by Susan Hoffmann in the November 7th election.
From 1994 through 2001, he worked for the Corporate Leadership Council in Washington, District of Columbia, a program offered by the Corporate Executive Board.
Before that, he worked as an associate with Mercer Management Consulting in Washington and in Brisbane, Australia, and as a financial analyst for General Electric Information Services in Rockville and London. From 1982 through 1988, he served with the United States. Army Reserve as a microwave communications repairman.
Giammo holds a Masters of Business Administration from the Tepper School of Business at Carnegie Mellon University. He holds bachelor degrees in Finance and Economics from the University of Maryland.