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Capital One Interview Questions

The questions to prepare for Capital One interviews, across all roles. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 8 questions · ~101 min
Longest Unique Character SubstringMedium
Practice
Recently asked

Use a sliding window and hash map to find the length of the longest substring without repeated characters.

Hash TablesStringsSliding WindowCapital One
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2
SQL & Data Manipulation8 questions · ~101 min
Rolling Window Customer TransactionsMedium
Practice
Recently asked

Aggregate posted transactions by customer and date, then calculate each customer's rolling 30-day transaction total.

aggregationDate FunctionsData ManipulationCapital One
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3
Strategy3 questions · ~38 min
Tell Me About YourselfEasy
Recently asked

Craft a concise self-introduction that highlights fit, communication style, and relevance for an Account Executive role.

brand cultureBusiness AcumenCompetitive AnalysisCapital One
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4
Execution7 questions · ~88 min
Communicate Trade-offs Under ConstraintsEasy
Recently asked

Explain how you communicate scope, timing, and quality trade-offs when demand exceeds available engineering capacity.

Trade-offsRisk AssessmentScope ManagementCapital One
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5
Pipelines3 questions · ~38 min
Data Quality in ETL PipelinesEasy
Recently asked

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityCapital One
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6
Metrics3 questions · ~38 min
Using Metrics to Drive DecisionsEasy
Recently asked

Explain how you used a KPI and supporting metrics to diagnose a product issue and make a concrete product decision.

Funnel AnalysisKPIsLeading IndicatorsCapital One
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7
More topics18 questions · ~228 min
Design Feature Drift Monitoring SystemHard

Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.

Feature StoreFeature DriftModel ServingCapital One
Link the Three Financial StatementsMedium

Explain how net income, cash flow, retained earnings, and balance-sheet balances connect and how to verify a three-statement model ties.

Accounting FundamentalsFinancial StatementsThree-Statement ModelingCapital One
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