Interview Experiences

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

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35 stories

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Capital OneData Scientist
Aug 2026

Four CodeSignal Tasks and No Reply After Nearly Two Weeks

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…

No responseOnline Assessment0
Capital OneData ScientistSenior+
May 2026

Rejected After the Hiring Manager Round

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RejectedTechnical ScreenXP0
Capital OneData Scientist
Apr 2026

Power Day With Three Back-to-Back Case Studies

Mini Case About streaming subscriptions: a new streaming service is launching, calculate the break-even point. Asked whether the break-even user count I calculated was reasonable — if not, what could be done to make it happen. Power Day Case #1 was the original weather insurance case Asked what factors to consider when it comes to the target customer Premium prepaid for 12 months: $30/month. Serv…

Onsite0
Capital OneData Scientist
Mar 2026

A Four-Round Power Day Onsite

Timeline & Full Process Online application / referral -> Recruiter Screen (15-20 min) -> OA (Assessment): you can check other posts on the forum for what this looks like -> Power Day: four rounds back to back, 45-60 minutes each. Power Day Breakdown Round 1: Case Interview (Business Analyst Case) Scenario: you're given a concrete credit business scenario (for example, a credit-limit-increase stra…

Onsite0
Capital OneData ScientistSenior+
Feb 2026

A Rough First Attempt at Risk QA, Then an OA and Four-Round Power Day for the Offer

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OfferOnsiteXP1
Capital OneData Scientist
Feb 2026

Four Rounds Ending in a Power Day Onsite

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OnsiteXP0
Capital OneData Scientist
Feb 2026

Failed a Streaming Show Renewal Case

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RejectedTechnical ScreenXP0
Capital OneData Scientist
Feb 2026

A TV-Show Cancellation Case, Then a Power Day Invite 90 Minutes Later

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In progressTechnical ScreenXP0
Capital OneData Scientist
Feb 2026

A Streaming Show Case I Didn't Pass

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RejectedTechnical ScreenXP0
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 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 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 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

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