I applied through college or university. The process took 1 day. I interviewed at Capital One (Atlanta, GA) in Feb 2016
Interview
I applied to Capital One after talking to them at a career fair and was selected for a final, three round interview. There was a "Case" Interview, a behavioral interview, and a job fit interview (which ended up being technical coding questions). The whole process took three hours, with a 15 minute break in between each interview. Each interview stage was with a different person.
Interview questions [1]
Question 1
The case interview involved understanding how to call an encryption program and how to use it to encrypt every file in a directory. During the job fit interview I was asked how to implement a simple web chat system using object oriented techniques. I was then asked how to figure out if a string was a palindrome. I was asked three pretty standard behavioral questions as well.
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.