So I've been applying to be a Game Designer at Riot for the past several months now. They have a very extensive screening process which makes sense since most prospective designers, at least from what I've seen on internet forums, are not very good. Also, even as LoL expands and Riot needs more personnel for servers and computer-bops, the core design team is more of an intensive property and doesn't need to grow as much.
I'd love to tell you about all the design tests they've been giving me, but unfortunately I've sworn the Unbreakable Vow and will literally die if I say a word. But it's going well methinks.