I applied for the position when Facebook was interviewing on campus. I emailed my resume on the deadline and was called for an interview within 5 days. After passing the first interview, I was informed that evening that I had a second interview the next day.

After that, it was about a week or so before I heard back. Since I was a graduate student, the third and last stage was to match me with a particular group. Within a few days of the matching process (done via phone), I received my offer letter.

The two on-campus interviews consisted of writing down actual code. In my case, I used Java, and they were fairly basic and specific data structures-related questions.

Given a sorted array, write a program to decide if two elements sum up to a third.

Determine the 10 most frequent words given a terabyte of strings.