Medium sized law firms (25+ attorneys) are a good place to look. They have a lot of internal business processes that can be wrangled with some fairly simple apps. Not a single person in the whole firm knows anything about computers. Profit margins are fat. If you automate a couple things the managing partner thinks are a PITA, you'll be treated like a god. Also law firms seems especially fearful of tech talent leaving, so I don't even really think you have to worry about a paycut.