Global architecture and engineering firm HDR (Omaha, Neb.) has named John Henderson as its new CEO.

Henderson  previously served as the firm’s president and COO. He succeeds Chairman and CEO Eric Keen, who will remain chairman of HDR’s board of directors.

Replacing Henderson as president and COO is Neil Graff, who previously served as the firm’s director of U.S. and North America operations.

For more on HDR, go here.