I applied in-person. The process took 1 day. I interviewed at Trader Joe's (Brooklyn, NY) in Jul 2011
Interview
The interview was very easy, but the guy doesn't know how to interview. He didn't ask me any questions about the store which was weird, except if I shopped there. He asked a few questions about myself, availability, and what I'd be doing and that was it.
Applied online and had one in person interview with the captain. It lasted maybe 10 minutes. Got a call a week or so later that I got the job. Very fast process.
It's two to three interviews, the final with the Captain (or highest manager) of the store. The interviews are largely to get to know your personality and how well you would do at customer service.
The interview process was absolutely wonderful! I didn't feel stressed or nervous and it felt like I was just chatting with a friend! Trader Joes is a great company and the interview was great.