After some initial (easy) screening interviews, I had a one-on-one talk with somebody from Infusion. This was a great conversation, he proposed a network problem to me, and we spent a lot of time talking about how I would debug it. It told me the interviewer was interested in my thought process, and not whether I could spit out the correct answer to a canned questions (e.g. Java heap generations)

The whole process lasts for more than two months, partially because when it is applied, it's approaching the holiday season. So you have to be very patient. The interview contains three parts---phone screen, first in-person one on one and second in-person one on one. When I finished applying, the phone screen arrived in a week. After two weeks, the first one on one interview was noticed. After another two weeks, the second one on one came. And a month later, they finally moved the application to the final offer negotiation phase.