Top 30
Prep plan
Updated weekly · Last refresh Aug 30

Visa Machine Learning Engineer Interview Questions

The questions to prepare for a Visa Machine Learning Engineer interview. Questions from real interview reports rank first. Updated weekly.

30questions
~5htotal time
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1
CodingStart here. 4 questions · ~37 min
Longest Common SubsequenceHard
Practice

Use dynamic programming to reconstruct a longest common subsequence shared by two Meta content strings.

RecursionDynamic ProgrammingStringsVisa
Sliding Window Anomaly DetectorHard
Practice

Maintain a moving average over a fixed-size window and flag anomalies using a z-score threshold in one pass.

Hash TablesQueueArraysVisa
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2
Model Evaluation3 questions · ~28 min
Detect Production Drift in ModelsHard

How to detect data drift and concept drift in production using metric shifts, control charts, and calibration checks.

CalibrationAUC-ROCThreshold TuningVisa
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3
System Design5 questions · ~46 min
Design Real-Time Fraud Risk ScoringHard

Design a real-time fraud scoring system for card transactions with strict latency, delayed labels, and high availability requirements.

Feature StoreFeature DriftModel ServingVisa
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4
Pipelines3 questions · ~28 min
Top Active Merchants SQLMedium

Tests SQL proficiency for time-windowed analytics on payment transaction data.

data integrationsql tuningVisa
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5
Behavioral & Leadership10 questions · ~92 min
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6
More topics5 questions · ~46 min
Assess Risks in a GenAI AssistantHard

Evaluate and mitigate prompt injection, data leakage, and compliance risks in a consultant-facing generative AI tool.

Language ModelsRisk AssessmentUse CasesVisa
Bias Measurement in Credit ScoringMedium

Tests statistical thinking and fairness mitigation strategies for credit-related ML.

SamplingBiasCausal InferenceVisa
Boosting vs BaggingMedium

Assesses knowledge of ensemble methods and their practical implications.

Visa
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