The LeetCode questions, both for phone and on-site interviews, were not too difficult or surprising.
During the on-site, I had three technical interviews. One of them was imperfect, and in another, I didn't properly finish the code, but I still got an offer.
My interpretation is that they care more about your ability to think reasonably, articulate, and demonstrate your ideas effectively than writing picture-perfect code in the fastest amount of time.
Be personable, clever, and well-prepared (LeetCode), and you'll be fine. Everyone is extremely friendly. Easily my favorite company I interviewed with.
Leetcode 349 and 124
The following metrics were computed from 359 interview experiences for the Meta Software Engineer role in Menlo Park, California.
Meta's interview process for their Software Engineer roles in Menlo Park, California is very selective, failing most engineers who go through it.
Candidates reported having very good feelings for Meta's Software Engineer interview process in Menlo Park, California.