I had an on-site interview -- it was an hour long. The questions were simple -- on string and bit manipulation. I signed an NDA, so can't disclose the question. You need to have quick coding skills.
I applied through a recruiter. I interviewed at Meta in Feb 2013
Interview
Phone interview - coding questions on "whiteboard" (online editor)
Interview questions [1]
Question 1
You have two lists with meetings scheduling (start time, end time)
Meetings in single list don't intersect.
Find all intersecting meetings across the two lists.
I applied through a recruiter. I interviewed at Meta
Interview
I first can an email from a recruiter who helped me to arranged 2 phone interviews using skype. The interviewers are two current software engineers. After the phone interview, I was informed that I cannot proceed the interview process.