Duolingo Software Engineer interview with CodeSignal and pair coding

The earliest stages were fairly smooth and lightweight compared with what I expected. I started with an online CodeSignal assessment, then had a short behavioral screen focused mainly on how I worked and handled team situations. In another run through the process, the coding assessment was also relatively manageable. It covered a subset of questions, including basic graph traversal and string or…

Shared by a candidate · reported Nov 2025. Interview formats change; use it as a guide, not a script.