It took forever for them to finalize interview. From first phone call to on-site interview, took about 4 months. Yes, 4 months. From several other posts from other websites, it seems they are always slow. So if you really want to work for them, be patient. 5 people interviewed me. Most of very general questions. It's not difficult but you don't really know what they are thinking about you. I think my interview went very smoothly and were even asked when I can start work.... result: no offer. reason? I don't know. They won't tell.