I applied through an employee referral. The process took 3 weeks. I interviewed at Meta (New York, NY) in Jan 2015
Interview
Had three interviews including a phone call with a FB recruiter followed by two skype interviews with current designers from different locations. First interview I had with the designer was about my projects and she was not actively responding to my explanation which made it hard for me to lead the conversation. Second designer I talked with was very understanding and showed good reaction to my opinion. It was more pleasant two-way conversation, not like the previous one. I'm glad I could do face to face skype interview with the second designer for the app critique interview.
The recruiter is very supportive. First round is a deck presentation. Second round is full loop: deck+ BQ+ whiteboard+ app critique. The Overall experience is good, it takes around a whole month
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.
I applied through a recruiter. I interviewed at Meta
Interview
I was reached out by a recruiter. Started with the recruiter call, then portfolio presentation, then full loop (Portfolio presentation - app critique - design challenge - background). They had very strong emphasis on design craft and visual excellence. Recruiter who helped me prep was very nice and helpful.