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Amazon Development Centre Interview Questions

The questions to prepare for Amazon Development Centre interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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1
CodingStart here. 13 questions · ~121 min
Serialize and Deserialize Binary TreeMedium
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Recently asked

Serialize a binary tree to a string and reconstruct it exactly using preorder traversal with null markers.

RecursionHash TablesQueueAmazon Development Centre
Largest Number in ArrayEasy
Practice

Scan a Western Digital Dashboard metric array once to find its largest value in O(n) time and O(1) space.

MathArraysStringsAmazon Development Centre
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2
Machine Learning7 questions · ~65 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 TradeoffAmazon Development Centre
Handling Missing Data in MLMedium

Explain practical strategies for handling missing data and how to validate that the chosen approach improves model performance.

Feature EngineeringData WranglingSupervised LearningAmazon Development Centre
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3
Behavioral & Leadership24 questions · ~223 min
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4
More topics6 questions · ~56 min
Choosing Classification Evaluation MetricsEasy

Explain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.

PrecisionAccuracyRecallAmazon Development Centre
Database Caching System DesignHard
Recently asked

Assesses system design skills for caching, consistency, and performance.

databasecachingAmazon Development Centre
Testing Scenario WalkthroughMedium

Assesses how you reason through a QA scenario and structure your testing approach.

Amazon Development Centre
Low-Latency Inference PipelineHard

Evaluates your approach to building production pipelines that support fast, reliable ML inference.

data pipelinelatencymodel inferenceAmazon Development Centre
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