Phone screen, followed by an easy aptitude test, followed by a "face-to-face" half-day interview. No lunch was offered, but they did offer water. Spoke with HR rep, followed by 5 technical staff members in pairs, one of whom was CTO, then spoke with a second HR rep who went over benefits. One of the interviewers was rather rude (and had bad breath). I couldn't tell if he was badly socialized, a bumpkin, or deliberately rude to observe my reaction.