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 Wikimedia projects is a volunteer, including members of the Board of Trustees.
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)
Eugene Eric Kim, Program Manager. Eugene is consulting with Wikimedia for the duration of the Strategic Planning project on behalf of Blue Oxen Associates.