Capital One Interview Experiences

62 results

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  CodeSignal OA With Hidden Tests and a Painful ID CheckCapital One · Software Engineer · Online Assessment · Oct 2026

  Fresh OA from an hour ago!! Background: I don't need sponsorship. A small side story: uploading my ID took forever this time. Maybe the lighting was bad, or because I was holding the ID right up against the camera, but it kept telling me it couldn't read the text. In the end it only verified after I screenshotted an old passport scan from a folder on my computer. Luckily I wasn't in a hurry... Ev…

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  Power Day with Behavioral, Case Study and Agentic CodingCapital One · Software Engineer · New Grad · Onsite · Oct 2026

  Sharing a recent Capital One TDP Power Day interview report. The Power Day had three rounds in total: Behavioral, Case Study, and Agentic Coding. The Behavioral round was pretty standard, basically all classic BQ. As long as you prepare a few projects ahead of time and tell the stories clearly with the STAR framework, you should be fine. Teamwork, conflict, and failure are especially worth prepar…

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  Four CodeSignal Tasks Without a Recruiter CallCapital One · Software Engineer · Online Assessment · Sep 2026

  The author reports receiving a four-question CodeSignal assessment from Capital One without prior recruiter contact. One task involved a basic array operation, but the author could not recall its details. The other tasks concerned alternating high and low values around a circular array, identifying a smaller pattern within a numeric matrix, and determining whether segments fit on a number line co…

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  Four Power Day Rounds and a Virtual Credit Card CaseCapital One · Software Engineer · Senior+ · Onsite · Sep 2026

  Rejected

  I did the four-round Senior Lead AI Engineer Power Day in late September. It felt all right overall. I guess poor performance on the VNC case was why I didn't pass. Round 1 — AI Engineering / System Design Design an Enterprise Agent Platform The interviewer asked a series of AI / agent / platform / system-design questions that were within the scope of my preparation. Round 2 — Technical Case: Vir…

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  Four-Question OA Where the Rotting-Oranges BFS Ate My TimeCapital One · Software Engineer · Online Assessment · Sep 2026

  Posting this a while after the fact. I strongly recommend doing them in the order 1-2-4-3. People on the forum did say 3 was kind of hard, and I got stuck on it for ages. I'd have been better off doing 4. To explain: the easy questions up front take roughly 25 minutes, and then two mediums in 45 minutes is still pretty hard. You're better off getting full points on one of the last two questions..…

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  Four-Question OA, Left Q3 Blank and Tripped on the Digit-Swap ProblemCapital One · Machine Learning Engineer · Online Assessment · Sep 2026

  Rejected

  Catching up on a write-up for the C1 AI Engineer OA I did a while back, which I failed. 4 questions total, 1 hour 10 minutes. The first two were really easy. I can't remember what they were, but they were just really easy, you can finish them in 10 minutes. I didn't understand question 3, so I skipped it and went to do question 4, and in the end I had no time to come back to it, so it was complet…

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  Power Day with Case, Behavioral, Coding and System DesignCapital One · Software Engineer · Onsite · Sep 2026

  In progress

  I just finished the C1 power day. There are already plenty of OA write-ups on the forum so I won't go into that, I'll mainly talk about the four power day rounds as a reference for anyone interviewing later. The four rounds were case, behavioral, coding, and system design. The case was the virtual card number one, which someone has posted about here before. First we talked about the benefits and…

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  Superday With a Case Study and an AI-Assisted Coding RoundCapital One · Software Engineer · Intern · Onsite · Sep 2026

  The Superday was three parts, behavioral (standard), case study, and AI assisted coding. The case study covered the use of virtual credit cards and had multiple sub-parts. After weighing the tradeoffs of virtual cards, you analyze some virtual card numbers and see what specific conditions they fulfill and you debug some code regarding the conditionals for filtering these card numbers. The AI assi…

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  System Design With a Phone-Scrolling Interviewer, Then an OfferCapital One · Software Engineer · Senior+ · Onsite · Sep 2026

  Offer

  After three months of interviewing, I finally landed a Lead Software Engineer job at Capital One. A bit of background: I've been the lead engineer at a fairly small company for close to ten years, and almost everything I know came from doing the work. I had barely touched LeetCode-style problems, and my system design knowledge came only from the systems I'd built at my job. To get through the tec…

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  Four CodeSignal Tasks and No Reply After Nearly Two WeeksCapital One · Data Scientist · Online Assessment · Aug 2026

  No response

  It has been almost two weeks since I finished, and I have not heard anything, so I probably failed... This was the first interview of my job search, and I never expected to fall at the OA. Looking back, I did not take it seriously enough, did not prepare enough, and was not familiar with this OA format. There are many interview reports on the forum, so I am writing about a few things I had not se…

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  Four Coding Questions in the Online AssessmentCapital One · Software Engineer · Online Assessment · Aug 2026

  Given an array, find the first element whose two adjacent neighbors are both strictly larger. Given 2 arrays with the same length n, calculate the sum of absolute diff for each cyclic t-shift of nums1 with nums2. Return a list of all sums sorted in nondescending order. Given a 2D matrix and a pattern, return the coordinate of the submatrix with the lowest row index and lowest column. The submatri…

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  Power Day Across Two DaysCapital One · Software Engineer · Senior+ · Onsite · Aug 2026

  I had read the Capital One interview reports on the forum and found them very helpful, so I'm sharing some more details to give something back. It was still the four-round Capital One interview, the so-called Power Day, split into case, behavioral, coding, and system design. I spread the interviews over two days. Day one, case interview: The familiar virtual-card-number problem from the forum, wi…

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  Two Cases and a Digital Product CaseCapital One · Business Analyst · Senior+ · Onsite · Aug 2026

  After scheduling the interview, I had a phone call with HR. I was explicitly told that there would not be three behavioral questions. The product interview now uses only a digital product, and it includes questions related to AI. Case 1: a 90-day short-term loan. Case 2: wheat. They were exactly the same as the interview reports on the forum. Work through all of them and you will be fine! Product…

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  Capital One Business Analyst interview with a mini case and Power DayCapital One · Business Analyst · HR Screen · Jul 2026

  After an initial recruiter call, the process moved quickly to a mini case and then straight into a Power Day. It felt standard for a Business Analyst track: an HR conversation about what to expect, followed by quantitative case-style questions in the mini case. The Power Day was the heavier part, with several back-to-back interviews. During Power Day, I had case interviews and a product-focused r…

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  Capital One Business Analyst interview: clarifying a game-launch case questionCapital One · Business Analyst · Jul 2026

  The hardest part for me was a case interview where I initially struggled to understand the question. The interviewer guided me through calculating the answer across a series of steps, but I could not fully follow what they were asking. I kept clarifying and asking questions. The case was about launching a new game with free and paid visibility in the market. Even with the guidance, it was tense b…

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  Capital One Business Analyst interview: graph and percentage assessmentCapital One · Business Analyst · Online Assessment · Jul 2026

  Rejected

  My process ended at the online assessment. My background leaned toward analytics, but the assessment was much more about business and math than analytics problems. The preparation material I found did not seem to match the format I received. There was a small set of questions on graphs, data interpretation, percentage calculations, and reasoning beyond plugging in numbers. I worked through them,…

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  Capital One Data Analyst interview: Power Day cases after a data challengeCapital One · Data Analyst · HR Screen · Jul 2026

  Offer

  After an HR call, I had a technical screen that combined technical work with business problem solving. There was a coding test focused on SQL and Excel data management, then a data challenge where I analyzed the material and presented what I found. The process took about two months from beginning to end, longer than I expected because I kept waiting for the next step. Power Day had four rounds an…

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  Capital One Data Analyst interview: SQL and final business caseCapital One · Data Analyst · Online Assessment · Jul 2026

  Rejected

  After a recruiter screen, I took an online technical test and then went through rounds that felt much more business heavy than advertised. The test had one basic SQL question and a larger set of data-manipulation multiple-choice items. The first interview mixed business-case work with a very quick SQL component, and a later technical round had easy LeetCode-style questions. The mismatch showed up…

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  Capital One Product Manager Interview Experience: Power Day cases on A/B testing and profit optimizationCapital One · Product Manager · HR Screen · Jul 2026

  After a recruiter screening call, the process quickly moved into a mini case on a Capital One product. I received charts, interpreted the data from an A/B-testing perspective, and then zoomed out to a UX review where I made recommendations from what I saw. About a day later, I had Power Day, a long series of interviews that mixed product skills, product discovery, and heavier case work. One part…

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  Capital One Product Manager interview: four Power Day interviews and a DMV caseCapital One · Product Manager · Other · Jul 2026

  My final stage was Power Day: four back-to-back video interviews. Two were consulting-style cases. The other two focused on product work, including a product I'd led and a product-sense case study. The product prompt involved designing an experience related to the DMV. I had to connect the user journey, decisions and trade-offs into a clear plan. The day felt like an assessment of how I framed pr…

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  Capital One Product Manager interview: math and product decisionsCapital One · Product Manager · Technical Screen · Jul 2026

  After an initial one-on-one, I spent a full day in back-to-back meetings, each about an hour long. The split surprised me: two rounds were essentially math problems, while the others assessed how I made product decisions and thought about product work. One interviewer put it this way: if someone is so strong at math that becoming a developer or moving toward technical architecture makes more sens…

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  Capital One Product Manager interview: respectful conversations about team cultureCapital One · Product Manager · Jul 2026

  This was one of the smoother interview experiences I had. The people I spoke with felt genuinely strong, and I liked how they talked about the role and the team I would be working with. The conversations gave me a real sense of the company culture and did not feel rushed past the context. The tone stayed positive, and I left understanding what the job involved. I did not get an offer, but I would…

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  Capital One Product Manager interview: withdrew after recruiter mismatchCapital One · Product Manager · HR Screen · Jul 2026

  Withdrew

  I only reached the early stage because the recruiter call put me off. It felt disconnected from product-manager work and the roles being hired for. I came away thinking the person did not understand what Product teams did, and they discouraged me from taking part in a rigorous full-day process if I did not feel like a strong fit. There was a brief attempt to pull me back into the process, but I h…

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  Capital One Software Engineer interview: CodeSignal OA under time pressureCapital One · Software Engineer · Online Assessment · Jul 2026

  My process was dominated by a CodeSignal OA where time pressure mattered a great deal. I completed the assessment and earned full points on three of the four questions, which was a relief, but the clock was already working against me by the time I reached the last one. The OA had four DSA questions in 70 minutes. I fully solved questions 1, 2, and 4 and got top marks on each. When I reached quest…

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  Capital One Software Engineer interview: four one-hour interviews in one dayCapital One · Software Engineer · Jul 2026

  I interviewed in a standard four-interviews-in-one-day format. After earlier rounds, I had four one-hour sessions that were evaluated together: two technical interviews, one behavioral interview, and one case interview. The technical interviews used LeetCode-style problem solving. The behavioral session focused on my experience and how I described my work. The case interview was about walking thr…

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  New OA With Four Questions, One I Only Half-SolvedCapital One · AI Engineer · Online Assessment · Jul 2026

  One hour and ten minutes, four questions in total. Question 1 Very simple — take a string and reorder it by first character, last character, second character, second-to-last character, and so on. Input: abcde Output: aebdc Question 2 Also simple — a string made up only of W, D, L characters. Sort the whole thing so the output repeats in W, D, L order. Input: WWWLLDDLD Output: WDLWDLWDL Input: WLD…

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  Product Manager interview at Capital OneCapital One · Product Manager · Jul 2026

  I started with a phone screen, then a Virtual Job Tryout, a mini case around a Capital One product, and finally Power Day. Recruiter communication and the materials made the sequence somewhat predictable, but there were enough checkpoints that mistakes still felt costly. Power Day meant four back-to-back one-hour interviews. I worked through a case tied to a product I had worked on, product round…

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  Same OA, Now Cruise-Themed Instead of SuperheroesCapital One · Data Analyst · Online Assessment · Jul 2026

  I noticed there isn't much here about this OA, and I just finished mine, so I wanted to share. The two Canada-version posts from 2024 are completely outdated now — what's being tested currently is very similar to another report I found. Basically the approach for every question is the same, except it's no longer about superheroes, it's about cruises now. There are 12 questions total, but the firs…

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  Rejected After Stumbling on the Venmo Case MathCapital One · Product Analyst · Onsite · May 2026

  Rejected

  Since a lot of people on the forum helped me out a lot, I'm still posting this report even though I ended up getting rejected, which is a shame. Behavior: The usual three — success, helping others, and failure. Remember to prepare detailed examples, there will be follow-ups. DC: I made slides, mostly focused on visualization, since at my current job I present to an MD every day so this felt famil…

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  CodeSignal OA with a Tetris-Style Block-Placement ProblemCapital One · Applied Researcher · Online Assessment · Apr 2026

  A friend referred me to Capital One (C1). After the recruiter phone screen, they sent a CodeSignal Online Assessment, which had to be completed within 7-10 days — 4 questions, 70 minutes total. I got the link last Friday and finished it this Tuesday. I had grinded LeetCode and the C1-tagged questions from the last three months on 1point3acres, but only the first question actually overlapped. My f…