Capital One Software Engineer Interview Questions
& Process

I got referred by a friend. The whole thing took a few months. First, there was a tech screen on CodeSignal. Then came a "Power Day" which was about 4 hours of interviews covering Technical, System Design, Creative Problem Solving, and Behavioral aspects. I passed this, but then had to wait for team-match, which never materialized. After several months, I was told they didn't have any openings and to reapply in the Spring.

The process started with an Online Assessment, followed by a Recruiter Interview. Then there was a Power Day Prep Call and the Power Day Interview itself, which consisted of 4 one-hour interviews covering System Design, a Technical Interview, a Behavioral interview, and a Case Interview. Finally, there was a Job Match Interview. The whole thing took about a month from applying to the Power Day Interview. The recruiter was really good at keeping me updated and explaining things throughout.

I did an OA on codesignal first. Then I had a powerday which included a case interview, a technical interview, and a behavioral interview. The case interview was about credit card processing with different rules for different companies. I was asked about business/customer benefits, to answer test cases based on the rules, and to fix bugs according to the rules. They guided me through each step, and it was like an LC easy with business context. The advice is to talk out loud and check in with the interviewer often. The technical interview was about fraud detection for credit and debit transactions, using OOP concepts with classes. This was also step-by-step and like an LC easy. The behavioral questions were about challenging the status quo, collaborating with a teammate, and learning something new with a focus on results. Each interview was scheduled for an hour, but I finished early and used the extra time to ask questions. They filled the February cohort and offered me a spot for August.