The communications and IT director for Roanoke County, Va., is moving on. Bill Greeves announced he will resign from his position and become CIO for Wake County, N.C., effective Aug. 6.

“My time with Roanoke County has been excellent both professionally and personally, but I am very excited about the opportunity to join such a large and highly reputable organization as Wake County,” Greeves said in an email.

Centered around Raleigh, Wake County has a population of about 900,000, making it about 10 times more populous than Greeves’ old territory. In 2008, Greeves founded MuniGov 2.0, a group of 800 public-sector IT employees who looked for ways to use Web 2.0 technology to improve government. Prior to Roanoke County, Greeves was the IT director of Hampton, Va.

Greeves is the co-author of the forthcoming book Social Media in the Public Sector Field Guide: Designing and Implementing Strategies and Policies, which is set for release in November.

In 2010, Greeves made Government Technology’s annual list of Top 25 Doers, Dreamers and Drivers.

In Wake County, Greeves is replacing Elizabeth “Lib” Wanner, who retired from public service in April. Wanner was Wake County’s CIO since 2001. Elaine Carver will serve as interim IT director of Roanoke County.