Duolingo·Software Engineer

Duolingo Software Engineer interview experience

No offer

Hard

Neutral

United StatesPosted Sep 2023 · Candidate report, summarized by Dataford

I took a general Codesignal-style assessment, and then I moved into a Karat interview.

The Karat round leaned heavily on depth-first search patterns—there was a matrix-style DFS question in one setting, and the overall vibe in that interview was very algorithmic with recursion and backtracking themes.

I struggled during the DFS portion, especially with the specific matrix angle, and I didn’t really recover from that in the time we had. What was especially frustrating was that the evaluation felt more like it captured my work as I produced an answer rather than getting deeply guided toward correctness; I had the sense that the interviewer’s focus was on how I approached the

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