Meta Software Developer interview questions

Overall very smooth and enjoyable recruiting process. All the recruiters were very helpful and responsive. I was first contacted by a recruiter via LinkedIn. I scheduled the phone interview ~4 months after being contacted. The phone interview was an onsite phone interview, so I had to use the whiteboard for the phone interview. Interviewer was very friendly and gave a small hint when needed. After passing the phone interview, I scheduled the onsite about 3 weeks later. I was provided with a lot of good study material by the recruiter for the onsite. The onsite interview consisted of 3 coding, 1 system design, 1 behavioral+coding, and lunch in between. The coding averaged about 2 questions each. For the behavioral, they asked a simpler coding question in the last 10-15 min. Interviewers for the coding sessions have great poker faces. I couldn't gauge at all how I was doing because of it. But they were helpful and gave small hints and caught small mistakes when needed. I had a little trouble communicating with one interviewer, because we were confusing each other by referring to the same thing with different terminology. Make sure your interviewer understands what you're trying to say and keep terminology consistent. The onsite lasted until around 3pm. Don't take bathroom breaks unless you really have to because that'll cut into your interview time. The interviewers usually end right on time even with bathroom breaks. Just go during lunch or before the onsite begins. They'll also cut the interview short so you can ask questions in the last 10 min. Don't take too much time thinking of a solution and write as fast as you can so you can finish on time. It's also ideal if you have time to walk over and test your solution at the end. Start writing high up on the board, so you don't run out of space and have to cramp your solution. A footstool would have been nice.

one round phone interview. Approximately 45 mins. A 5 mins brief talk on the resume followed by a technical coding question with some follow up questions. The interviewer was nice.