Onsite

Power Day Across Two Days

Capital OneSoftware Engineer · Senior+ · Onsite · Aug 2026

I had read the Capital One interview reports on the forum and found them very helpful, so I'm sharing some more details to give something back. It was still the four-round Capital One interview, the so-called Power Day, split into case, behavioral, coding, and system design. I spread the interviews over two days. Day one, case interview: The familiar virtual-card-number problem from the forum, wi…

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