Several rounds, moderate to hard difficulty, with lots of theory. The engineers interviewing me were nice enough, though. Basically what you'd expect from a big tech interview process. I don't know what else to say, but it requires 30 words.
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The following metrics were computed from 2 interview experiences for the Meta Engineer role in San Francisco, California.
Meta's interview process for their Engineer roles in San Francisco, California is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Meta's Engineer interview process in San Francisco, California.