The Wikimedia Foundation currently has a small paid staff working out of a main office in San Francisco, California. Several staff members also work remotely. 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)
Fred Vassard, System Administrator, since March 2009.
Steve Kent, Head of Office IT Support, since June 2009.
Programs
Jay Walsh, Head of Communications, since January 2008.
Parul Vora, Interaction Designer, since February 2009.
Nimish Gautam, Software Developer, since July 2009.
Wikimedia Strategic Plan
Eugene Eric Kim, Program Manager, since July 2009. Eugene is consulting with Wikimedia for the duration of the Strategic Plan project on behalf of Blue Oxen Associates.