The problems were easy LeetCode mediums. Behavioral questions are basically just practice of your STAR conversational approach, so nothing crazy. The bar for hiring is getting lower, which is why they lay off the bottom 10-20% every year.
The following metrics were computed from 2,519 interview experiences for the Meta Software Engineer role.
Meta's interview process for their Software Engineer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Meta's Software Engineer interview process.