Meta·Software Engineer·Onsite - Coding / Algorithms
May 2026
Meta SWE coding round with an AI coding twist. The problem was finding three cards that sum to 15, broken into three parts: debug, implement, optimize. Spent too long on the bug hunt and had to lean on the AI to write the actual code for the later steps, but got through everything including follow-ups.
- Given a set of cards, find three cards whose values sum to 15. The problem is broken into three parts: first identify a bug in provided code, then implement the algorithm from scratch, then optimize it.
“The bug-finding part ate up way more time than I expected.” The rest of the author's notes on Software Engineer interview at Meta, Onsite - Coding / Algorithms round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.
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