I applied online. The process took 6 weeks. I interviewed at Capital One (Saint Louis, MO) in Oct 2022
Interview
The first half of the interview process consisted of a recruiter reaching out to do a phone screening and getting you set up with the technical assessment. The technical assessment was average, not terribly difficult. The second half of the interview is a "Power Day" where you do four interviews in four hours. These interviews consist of a behavioral, a case, and two technical. These interviews are a bit tough, but they are doable as long as you are moderately experienced. The part that was the most frustrating throughout this interview process was that the recruiter who was facilitating everything for me was extremely unprofessional. He was a day late for our scheduled phone screening, consistently missed scheduled phone calls, and even accidentally scheduled my interview for the wrong day. It took me two weeks and missing three scheduled calls to get feedback from him. Overall, the interview process took six weeks.
Interview questions [1]
Question 1
I was asked to design a banking website and specify how I would do it, including what tools I would use for the frontend, backend, APIs, and database.
Interviewed for an engineer position, the interview was a joke. Asked basic OOP question with a few follow ups - no system design portion. Interviewer was very laid back and chill, didn't take it to seriously.
Was not too difficult. three total interviews all on the same day back to back. technical one, behavioral one and a case which was more of just a debugging question
Expecting a challenging experience, I found the interview at Capital One to be intense, particularly during the system design section. The question on designing a rate limiter with a token bucket algorithm took me by surprise; mid-way through the problem, I realized it was very similar to a drill I’d practiced on prachub.com just days earlier. The technical rounds included several DSA questions, and the interviewers were thorough but supportive. Ultimately, I received an offer and happily accepted, feeling well-prepared despite the pressure.
Interview questions [1]
Question 1
Design a rate limiter using a token bucket algorithm and discuss how it would handle bursty traffic and distributed deployments.