Meta Senior Software Developer interview questions

Applied on recruiter website, got contacted within a week. Had a couple of recruiter calls, then one phone screen, then two other recruiter calls. I am onto the onsite next, which consists of 2 coding rounds, 2 coding + behavior rounds, 1 design round, 2 other recruiter chat rounds. Yes, you read that right, they're expecting a full day of interviewing.

Very social, they were very nice throughout all the interview. Everyone made you feel like they really appreciated you. They were in continuous contact through the interview process, which included phone interviews, technical interviews, and an all-day interview marathon (by video chat / shared coding).