I applied online. The process took 2 days. I interviewed at Capital One (Chicago, IL) in Aug 2021
Interview
Code Signal
There were 4 questions and I clearly remember that two of the questions needed dynamic programming for optimal. Question 1 was very simple and I skipped question 3. I am pretty certain that if you get above a 700 you will be moving on.
Interview questions [1]
Question 1
Minimum peak elements from an array by their repeated removal at every iteration of the array
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.
Recruiter screening to begin with. Then, technical discussion about java, spring boot, design pattern, small coding tasks and followed by design assessment for distributed systems. Finally, managerial round for the team fit