I'm ais523, the creator of AceHack and Jettyplay (and now spend most of my NetHack-related time working on NetHack 4). I recently became a NetHack DevTeam member. As well as writing roguelike-related programs, I'm also a moderately good player, with several ascensions (mostly valkyries). I'm also trying to produce a tool-assisted speedrun of NetHack (that is, a "perfect game" obtained via mindblowing amounts of savescumming).
I'm also an admin here on NetHackWiki, although tend not to use my admin powers much.