In progressOnsite

Power Day with Case, Behavioral, Coding and System Design

Capital OneSoftware Engineer · Onsite · Sep 2026

I just finished the C1 power day. There are already plenty of OA write-ups on the forum so I won't go into that, I'll mainly talk about the four power day rounds as a reference for anyone interviewing later. The four rounds were case, behavioral, coding, and system design. The case was the virtual card number one, which someone has posted about here before. First we talked about the benefits and…

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