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Updated weekly · Last refresh Oct 17

Zoom Communications Research Scientist Interview Questions

The questions to prepare for a Zoom Communications Research Scientist interview. Questions from real interview reports rank first. Updated daily.

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1
System DesignStart here. 3 questions · ~26 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 ServingZoom Communications
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2
Machine Learning4 questions · ~35 min
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffZoom Communications
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3
Coding4 questions · ~35 min
Coding: MLP in PyTorchMedium
Practice

Construct an MLP layer sequence from input, hidden, and output dimensions while preserving PyTorch layer order.

Neural NetworksbackpropagationCodingZoom Communications
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4
Behavioral & Leadership7 questions · ~61 min
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5
More topics6 questions · ~52 min
Prompt Engineering and RAG BasicsMedium

Explain prompt engineering and RAG, how they differ, and when each is useful for improving LLM answer quality.

Vector SearchPrompt EngineeringRAGZoom Communications
Evaluate Model EffectivenessEasy

Assess whether a model is effective using core classification metrics and the confusion matrix.

PrecisionAccuracyRecallZoom Communications
Transformer and Decoder MechanicsMedium

Assesses understanding of Transformer and decoder architectures and core mechanics.

Zoom Communications
Evaluating a Zoom A/B TestMedium

Tests your statistical reasoning and ability to evaluate product experiments at Zoom.

Hypothesis TestingStatistical SignificanceA/B TestingZoom Communications
Defending Against Prompt InjectionHard

Tests your security thinking for LLM systems and your ability to propose practical mitigations.

HallucinationPrompt InjectionLLM EvaluationZoom Communications
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