Online Assessment

CodeSignal OA with a Tetris-Style Block-Placement Problem

Capital OneApplied Researcher · Online Assessment · Apr 2026

A friend referred me to Capital One (C1). After the recruiter phone screen, they sent a CodeSignal Online Assessment, which had to be completed within 7-10 days — 4 questions, 70 minutes total. I got the link last Friday and finished it this Tuesday. I had grinded LeetCode and the C1-tagged questions from the last three months on 1point3acres, but only the first question actually overlapped. My f…

Shared by a candidate · reported Apr 2026. Interview formats change; use it as a guide, not a script.