Top 38
Prep plan
Updated weekly · Last refresh Sep 10

Capital One AI Engineer Interview Questions

The questions to prepare for a Capital One AI Engineer interview. Questions from real interview reports rank first. Updated daily.

38questions
~6htotal time
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1
CodingStart here. 8 questions · ~72 min
Rotate Square Matrix In PlaceEasy
Practice
Recently asked

Rotate an n x n matrix 90 degrees clockwise in place using transpose and row reversal.

Array ManipulationMatrixCapital One
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
Generative AI & LLMs6 questions · ~54 min
LLMs in Analytics WorkflowEasy
Recently asked

Explain how you use LLMs in analytics work, with emphasis on prompting, structured outputs, evaluation, and hallucination control.

Capital One
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3
Pipelines6 questions · ~54 min
Deploy AI Pipelines on AWSMedium
Recently asked

Discuss how to deploy AI data pipelines on AWS, including orchestration, data quality, and security controls.

InfrastructureCloudCapital One
Data Quality in ML PipelinesMedium
Recently asked

Practical approach for maintaining data quality across ML ETL pipelines, orchestration, and repeatable data processing.

Data QualityETLData ModelingCapital One
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4
Model Evaluation5 questions · ~45 min
Interpreting Model Decisions ClearlyMedium
Recently asked

How to make a model interpretable and explain its predictions to stakeholders.

PrecisionAccuracyRecallCapital One
Evaluate Models in ProductionHard
Recently asked

How to evaluate a production model using calibration, thresholds, and confusion matrix tradeoffs.

CalibrationAccuracyThreshold TuningCapital One
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5
Machine Learning9 questions · ~81 min
Handling Imbalanced Fraud LabelsMedium
Recently asked

Explain how to train and evaluate models on highly imbalanced fraud data without relying on misleading accuracy.

Cross-ValidationFeature EngineeringSupervised LearningCapital One
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6
Behavioral & Leadership4 questions · ~36 min
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The finish line: interview-readyComplete all 38 questions to finish this plan.