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      Capital One

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      Software Engineer Interview

      Feb 29, 2016
      Anonymous employee
      McLean, VA
      Accepted offer
      Positive experience
      Average interview

      Application

      I applied through university. The process took 1 day. I interviewed at Capital One (McLean, VA) in Feb 2016

      Interview

      I met some recruiters at my school and they told me to apply online for the Technology Development Program. I received an email about a week later asking to pick a date to come interview at one of their offices. The interview had three parts; technical, case, and behavioral. The technical interview was pretty standard, just some questions about strings, linked lists and how you would design a system in an object oriented fashion (What objects, properties, data structures). The case interview involved hearing a real-world business problem and deciding which options made the most sense for the company. This involved setting up some basic algebraic formulas and determining which one makes the most finical sense. They don't expect you to know be perfect at this, but they want to see you talk through your thought process. If you get stuck, they will kind of nudge you in the right direction. The behavioral interview was pretty straight forward. They asked you to describe situations where you had to work with a team and what worked and what didn't. Overall a very positive experience. Everyone is really nice and the interview felt way more relaxed and less stressful than other interviews I've had.

      Interview questions [1]

      Question 1

      Determine if a string is valid based on placement of parenthesis. i.e. "123(13(44))" is valid but ")234(12)(" is not.
      6 Answers
      13

      Other Software Engineer interview reviews for Capital One

      Software Engineer Interview

      Jun 3, 2026
      Anonymous interview candidate
      No offer
      Neutral experience
      Difficult interview

      Application

      I interviewed at Capital One

      Interview

      4 rounds of interview including coding , design , case study, behavioral after clearing the code signal assesment. Coding was medium hard of 2 questions each. case study and system design was difficult.

      Interview questions [1]

      Question 1

      focus on designing and case study
      Answer question

      Software Engineer Interview

      May 20, 2026
      Anonymous interview candidate
      No offer
      Neutral experience
      Difficult interview

      Application

      I interviewed at Capital One

      Interview

      This took a bit longer than expected, stretching over several weeks. The technical rounds were intense, featuring an LRU cache implementation and a problem on detecting duplicate transactions within a 60-second window. I was nervous at first, but it clicked for me when I realized I had practiced a similar approach on PracHub just days before. Unfortunately, I didn’t receive an offer in the end, but the experience was a solid learning opportunity. The behavioral questions felt straightforward, so I wish I had made a stronger impression in the technical segments.

      Interview questions [2]

      Question 1

      Implement an LRU cache with get and put operating in O(1)
      Answer question

      Question 2

      Given a stream of transactions, detect duplicates within a 60-second window
      Answer question

      Software Engineer Interview

      Apr 14, 2026
      Anonymous employee
      Accepted offer
      Positive experience
      Average interview

      Application

      I interviewed at Capital One

      Interview

      Un proceso largo, pero sin mucha complicación en el proceso. Empresa atenta en todo momento a dudas y disponibilidad de tiempo para las entrevistas. Exámenes con temas sencillos y complejos. Variedad en los ejercicios