President Barack Obama named Martha Johnson to serve as administrator of the General Services Administration (GSA), the federal government's agency in charge of purchasing. Johnson served as chief of staff of the GSA from 1996-2001, where she played a key role in changing the agency from the government's supplier of goods and services to a competitive supplier of choice.

Since 2007 Johnson has served as a vice president at Computer Sciences Corp. Prior to that, she was a vice president at SRA International, where she provided consulting services to the U.S. departments of Labor and Homeland Security.

From 1993 to 1996, Johnson served as the assistant deputy secretary in the U.S. Department of Commerce, Office of the Deputy Secretary. Johnson was a search manager for the Office of Presidential Personnel in 1993.

Paul Prouty has been the GSA's acting administrator since January. Obama announced Johnson's nomination April 3.