He is a writer for The New York Times, where he was executive editor from July 2003 until September 2011. He announced on June 2, 2011, that he would step down from the position to become a full-time writer. Jill Abramson replaced him as executive editor. Keller worked in the Times Moscow bureau from 1986 to 1991, eventually as bureau chief, spanning the final years of the Cold War and the dissolution of the Soviet Union. For his reporting during 1988 he won a Pulitzer Prize.