I was reached out to by a recruiter asking if I was interested in sending over my resume/interviewing with Facebook. Within an hour of e-mails I had my first phone interview scheduled. It was scheduled for only about 45 minutes, about 30-35 of that reserved for programming problems. The problems were done with coderpad while on the phone, speaking to the interviewer. The first interviewer was really polite and sounded excited about the interview. As with any programming interview, I spoke out loud my thought process and the interviewer was interacting a lot with me along the way, it made me feel much more positive and made me forget about any lingering anxiety. After the weekend I learned I had made it to the second round of phone interviews. This interviewer sounded much less excited, I really got the vibe that they didn't want to be doing this. Where the first interviewer would interact with me, this one was almost a brick wall, and let me waste 5 minutes of our conversation looking for bugs (there was one in my code, the other "bug" was due to their lack of knowledge in my chosen language). At the end, we ran out of time and I didn't get to ask many questions. I felt kind of strapped for time near the end of both interviews, but the second was much worse.