I had a phone interview followed by an on-site interview.

The phone interview was good, and the interviewer was very friendly.

During the on-site, I had about five one-on-one interviews.

My interviews started on a bad note:

• The recruiter was late to pick me up from the lobby.
• My first interviewer arrived 10 minutes late.

He then rushed me into a system design question. I outlined the initial design and checked with him if there were any specific directions he wanted to go into, but I received no response. I continued working on the design question without him providing any feedback.

When there were only five minutes left, he started asking some questions on how some scenarios would work. I always thought interviews were supposed to be a discussion rather than the candidate talking and others listening, but perhaps it's different at Facebook.

Other interviews were also average. My third interviewer was a woman who seemed too full of herself and was very sarcastic. My fourth interviewer hardly showed any interest in my thesis work, though he was a very experienced guy, so it's possible they can absorb everything without even listening.

All questions are on LeetCode.