Overall this was a terrible experience. The internal design recruiter at Facebook cancelled, missed or rescheduled a total of 4 times over the course of 3 weeks. Once I was cancelled on an hour before the call. Another time I was waiting for the call and it never came, then when I emailed to find out what happened I was told they double booked me, or another time they got the wrong day. The attitude throughout seemed like I had to be on their schedule, and they were doing me a favor almost, even thought they'd repeatedly tell me how interested they are in my work. As 'interested' as they were, recruiter had no understanding for what I specialized in or what my company did. They never asked if I was interviewing with anyone else (which I was, two other big tech company in SF). Finally when I did the in-person interviews, those went as expected. Then again following the in-persona interviews they didn't reach out to me with their decision. I had to contact them a week later to find out that they had decided to move on. This process we demeaning, extremely unprofessional, and compared to all the other companies I interviewed with, was probably the most impersonal. All my years in the bay, I've never experienced anything like this.

Straightforward like any big tech interview, but long and intense. Formats are pretty standardized so it just takes practice. Questions appear like it's from a bank, so if you're prepared you should be fine.