I edit as a volunteer using this account.
I am currently a member of staff working for Wikimedia UK - you can see edits I make in this capacity at User:Katherine Bavage (WMUK)
I am working to support volunteer photographers at Wikimania 2014 by uploading and categorizing images they have doanted. All images will either be uploaded with the OTRS permissions queue ticket reference number, or if awaiting permissions email to be sent have the category - OTRS Pending - added and removed when sent, with ticket number in edit summary
If in doubt about this please ask on my talk page.