Interview Experiences

Real candidates, real loops: every round, what was asked, and how it ended.

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80 stories

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Capital OneData Scientist
Feb 2026

A Streaming Show Case I Didn't Pass

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RejectedTechnical ScreenXP0
Capital OneSoftware EngineerSenior+
Feb 2026

A Tetris-Style Grid Placement OA Question

There's an n x m grid of squares, and I need to draw a pattern on it. The pattern is made up of several fixed block shapes, kind of like Tetris. The problem gave 5 figure types: A, B, C, D, E. For A: in a 2x2 square, it only occupies the top-left, top-right, and bottom-left cells. So A is: That is, a U-shape / concave shape with the top-middle cell empty. This should go by the example matrix — fo…

Online Assessment0
Capital OneData Scientist
Feb 2026

The Groupon Case, Advanced Within an Hour

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In progressTechnical ScreenXP0
Capital OneData Scientist
Jan 2026

HR Call Through a Full Power Day

Round 1: HR Call Asked about "why this company," and otherwise it was just some basic logistics confirmation. Round 2: Data Challenge This was done on CodeSignal — about 4 questions total, using numpy, pandas, sklearn, etc. It was split into a few parts: data cleaning, feature selection, and model building. Finishing the data-processing part within the time limit (90 min) was fairly difficult; yo…

Onsite1
Capital OneData Analyst
Jan 2026

A Groupon Break-Even Case, Fast-Tracked to the Next Round

I just interviewed for the C1 SBA minicase yesterday, and it was the exact same Groupon case that's been floating around! If you're running a restaurant, you're considering whether to partner with a platform like Groupon. 1) What factors would you consider? 2) Given data: number of tables served per day: 20; avg spend/day: $30; cost: $0.40 per dollar spent; FC: $100/day — what is the daily profit…

In progressTechnical Screen0
Capital OneMachine Learning Engineer
Jan 2026

Four OA Questions, No Algorithms Required

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Online AssessmentXP0
Capital OneData Scientist
Jan 2026

A Streaming Renewal Case I Didn't Pass

I interviewed for a mini case at Capital One (C1) a while back and didn't pass. Today I want to share the questions and do a bit of a retro. The interviewer was a guy who used to work in consulting (I get the feeling C1 has a real preference for consulting backgrounds). He started with a quick self-intro, then had me introduce myself. He mentioned the official time allotted for this case is one h…

RejectedTechnical Screen0
Capital OneMachine Learning Engineer
Jan 2026

Four Questions in 70 Minutes, Stuck on a Two Sum Duplicates Edge Case

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Online AssessmentXP0
Capital OneMachine Learning Engineer
Dec 2025

Four Rounds Including a Virtual Credit Card Case Study

There aren't many MLE interview reports for Capital One on the forum, so I'm writing up my own experience to give everyone a reference point. I'll try to be as specific as possible, hoping it helps other people interviewing for MLE later. There were 4 interviews total, each scheduled for 1 hour, as follows: Set A technical. The interviewer was pretty easygoing, and overall it went smoothly and pl…

In progressOnsite1
Capital OneBusiness AnalystSenior+
Oct 2025

A Case Round That Was All Numbers, No Strategy

Capital One Senior Business Analyst When I was prepping for this interview and came looking for interview reports, all I could find were ones for data analyst roles, so I told myself that once I finished mine, I'd write one up to help other people interviewing for business analyst positions. Let me introduce my background first (though probably nobody's interested) — I have a Business Analytics m…

In progressOther0
Capital OneData Scientist
Oct 2025

Three Case Rounds, a Scheduling Mishap, and a Rejection

Round 1 had two interviewers — one leading, one silent the whole time. The BQ was a standard "help others" question. They followed up with a lot of detail, including what materials or records existed for the help I gave, and what I had to sacrifice or give up something important to help someone. A handful of other detail questions too. Then came the first case. It started by bringing up the reven…

RejectedOnsite0
Capital OneData AnalystSenior+
Oct 2025

A 70-Minute, 15-Question OA With Excel, SQL, and Stats

Capital One Senior DA Submitted my application on the 9th and got the OA the next morning on the 10th. Then my procrastination kicked in at full strength and I put it off all the way until today, emmmmm. Overall the difficulty wasn't too high, just like people here have said. It's split into three parts, 15 questions, 70 minutes. You get your score right when you finish, and it logs how long you…

In progressOnline Assessment0
Capital OneData Scientist
Oct 2025

A Phone Screen and a Break-Even Mini Case

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In progressTechnical ScreenXP0
Capital OneData Scientist
Oct 2025

A Smooth Power Day of Case, BQ, Case, and DC

I interviewed for C1's power day this week. Coming back to give back to the forum with my interview experience. I was nervous going in because I hadn't finished prepping in time, but the whole process turned out to be pretty smooth and not that hard. My power day order was case-bq-case-dc. Round 1, case: a coding-style one, I'd already come across this one before so no real questions there. Round…

In progressOnsite0
Capital OneData Scientist
Oct 2025

Take-Home Challenge, Then a Four-Round PowerDay and an Offer in Under 50 Minutes

Yesterday morning was PowerDay, 9:00am-12:30pm Eastern Time. I'm in Vancouver, so I dragged myself out of bed at 5:20am for the interview. Luckily it went well — less than 50 minutes after the interview ended I got an email from the recruiter with an offer writeup, and now the next step is team matching. I've been sending out résumés for a year and a half and honestly it made me want to die, cons…

OfferOnsite0
Capital OneData Scientist
Oct 2025

A Full Power Day Onsite (Two Cases, Data Challenge, BQ) Ending in an Offer

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OfferOnsiteXP0
Capital OneData Scientist
Oct 2025

Passed Power Day, Now Waiting on Team Matching

This Friday I just finished my Power Day. In the afternoon I got the email saying I didn't need another round, and not long after that the recruiter called that same afternoon to tell me I passed. But since it was Friday, HR usually doesn't get back right away, so they told me they'd first show my results to the HR they're currently working with to see if anyone wants to pick me up, and if not, t…

In progressOnsite0
Capital OneData Scientist
Oct 2025

A Cloud Pricing Case with Break-Even Math

A minicase about a cloud service — not sure if it's a new one, I don't remember seeing it on the forum before. The setup was a startup doing cloud services. We supposedly had our own advantage (I didn't quite catch what the advantage actually was, but personally I don't think it affected the rest of the questions much). Q1: How would you structure the product offering? How would you generate prof…

Technical Screen0
Capital OneData Scientist
Oct 2025

A Diaper Factory Case Under Time Pressure

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RejectedTechnical ScreenXP0
Capital OneData Scientist
Oct 2025

SBA Mini Case on a New-Energy Investment Plan

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In progressTechnical ScreenXP0

What are interview experiences?

An interview experience is a candidate's own account of a hiring loop — not a question bank entry. It tells you the shape of the process: how many rounds there were, what each round actually tested, how long the gaps between them ran, and what the recruiter said at the end. That context is the part a question list cannot give you.

How to read them

Weight recent write-ups more heavily — interview loops change, often within a year. Read several for the same company and role rather than one: a single account tells you what one interviewer asked, while five tell you what the bar is. Note the outcome badge too, since a rejection write-up usually explains the gap far more precisely than an offer one.

Share your own

Every published experience earns 50 XP, and each of the first 3 likes it receives in a day earns you 10 XP more. Likes must come from established accounts; like-for-like swaps and likes from your own second account are not paid. Write it while the details are fresh — the round order, the exact prompts, and how much time you were given are what the next reader needs.

Share your experience to earn XP