I applied online through LinkedIn and received an email from an HR recruiter asking if we could arrange a time to talk on the phone.

We then had a brief phone call to discuss what I was doing, my experience in software development, and the interview process at Facebook.

He then said he would arrange a phone interview for me.

The first phone interviewer was nice, and I could answer the questions easily, even though I initially misunderstood one. However, he was very patient in explaining it to me, and I finally got it right.

After a week, I received an email from the recruiter stating that the feedback from the first interview was positive and they wanted to schedule another phone interview.

The second phone interview was a week later with a woman who did not sound friendly or enthusiastic, speaking with a cold voice. I felt she did not like me and didn't want me at Facebook from the beginning of the interview. This made me very nervous and confused, and I lost my confidence.

Consequently, even though the questions were quite simple, I did not perform well. I can guess what happened next: I received a "thanks from Facebook" email the day after.

The questions were easy and common, but I was very disappointed with the second phone interviewer. The first interviewer was very nice and supportive.

The first question was to return the value of a Roman numeral given in a string. The question for the second phone interview was to print out the paths to all leaves of a binary tree.