The Wikimedia Foundation currently has a small paid staff working out of a main office in San Francisco, California. Several staff members also work from Florida and overseas. Everyone else involved with the projects is a volunteer, including members of the Board of Trustees.
Mark Bergsma, part time Networking Coordinator, since September 2006 (contractor).
Michael Dale works in the San Francisco office on open source video collaboration technology. His work is sponsored by Kaltura, Inc. (see related blog post)
Programs
Jay Walsh, Head of Communications since January 2008.