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Updated weekly · Last refresh Aug 30

EPAM Systems Machine Learning Engineer Interview Questions

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

35questions
~5htotal time
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1
CodingStart here. 5 questions · ~45 min
Implement K-Nearest NeighborsHard
Practice

Implement exact k-nearest-neighbors classification using a KD-tree, bounded max-heap, and deterministic vote tie-breaking.

MathArraysSortingEPAM Systems
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsEPAM Systems
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2
System Design6 questions · ~54 min
Design a Real-Time Prediction PlatformHard

Design a low-latency ML system for real-time predictions with online features, model serving, and monitoring.

Feature StoreFeature DriftModel ServingEPAM Systems
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3
Machine Learning8 questions · ~72 min
Bias-Variance Tradeoff in PracticeMedium

Explain the bias-variance tradeoff and how it guides model choice, regularization, and generalization performance.

Cross-ValidationBias-Variance TradeoffRegularizationEPAM Systems
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4
Model Evaluation3 questions · ~27 min
Diagnose Underperforming ModelMedium

Diagnose why a model is underperforming and decide whether the issue is thresholding, class balance, or a deeper data problem.

Hyperparameter TuningCross-ValidationBias-Variance TradeoffEPAM Systems
Choose the Right Evaluation MetricsEasy

Pick the right metrics to evaluate a machine learning model and explain why they fit the problem.

PrecisionAccuracyRecallEPAM Systems
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5
Behavioral & Leadership9 questions · ~81 min
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6
More topics4 questions · ~36 min
Improving ML Pipeline EfficiencyMedium

Assesses your ability to optimize ML workflows for speed, cost, and reliability.

ETLBatch ProcessingOrchestrationEPAM Systems
Designing an Experiment for an ML FeatureMedium

Evaluates your experimental design skills for validating ML feature improvements.

ExperimentationHypothesis TestingA/B TestingEPAM Systems
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The finish line: interview-readyComplete all 35 questions to finish this plan.