Hi. I'm Aaron Halfaker. As a volunteer editor, I go by "EpochFail". On IRC and most everywhere else, I go by "halfak". I work for the Wikimedia Foundation as a research scientist (see en:User:Halfak (WMF)). I also write tools for Wikipedians. See en:WP:Snuggle and en:WP:Wikignome gadget.
Recently, I've been most active on Meta documenting my research work and the like.