Capital One Software Engineer I interview questions
based on 416 ratings - Updated 28 Jun 2026
Averageinterview difficulty
Mostly positiveinterview experience
How others got an interview
49%
Applied online
Applied online
20%
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Campus recruiting
18%
Recruiter
Recruiter
9%
Employee referral
Employee referral
2%
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Recruitment agency
1%
Other
Other
0%
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In person
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Capital One interviews FAQs
Software Engineer I applicants have rated the interview process at Capital One with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 54.6% positive. This is according to Glassdoor user ratings.
Common stages of the interview process at Capital One as a Software Engineer I according to 1 Glassdoor interviews include:
Phone interview: 100%
Here are the most commonly searched roles for interview reports -
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.