I applied through college or university. I interviewed at Capital One (Richmond, VA) in Sep 2017
Interview
I applied through my University career fair and got a call for an on-site interview within a week. The interview had normal behavioral questions like explain a technical concept to a non technical person, had a technical round where there were 3 questions and there was a case interview.
Interview questions [1]
Question 1
Q. Explain a technical question to a non technical person?
Q. Find the second common element from 2 arrays?
Q. Convert 895 to Eight hundered Ninety five.
Q. Case Interview: Write an envryption function to encrypt the files.
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.