ITA used to advertise puzzles on the MBTA (public transit) in Boston and I emailed in a solution when I was a university student. Looking back, it seems like an effective way to find candidates with a sense of curiosity for problem solving.
I eventually got an offer, but chose another job. They were acquired by Google soon after, and I sometimes regret not taking it!
I eventually got an offer, but chose another job. They were acquired by Google soon after, and I sometimes regret not taking it!