This is a pretty standard LeetCode preparation.
Focus on data structures and algorithms, and you should have an easy time.
Expect medium-level questions throughout, with a small number of interview-style questions comparatively.
Good luck and no stress.
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The following metrics were computed from 1,861 interview experiences for the Meta Software Engineer role in United States.
Meta's interview process for their Software Engineer roles in the United States is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Meta's Software Engineer interview process in United States.