yurik: Yuri Astrakhan (http://en.wikipedia.org/wiki/User:Yurik) * bots & maintenance stuff
proes: Peter-Jan Roes * contractor working on WiktionaryZ/Wikidata
There will be a couple more guys coming soon on Wikidata-related stuff; they're under Eloquence's jurisdiction.
(Public service message: when asking me or Tim for an account on the SVN server, let us know what username you want. Otherwise you'll get first initial + last name if you don't have a wiki username that we know. :)
-- brion vibber (brion @ pobox.com)