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Alibaba Group Interview Questions

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

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1
SQL & Data ManipulationStart here. 4 questions + 2 drills · ~55 min
2
Coding4 questions · ~35 min
Design an LRU CacheEasy
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Implement an LRU cache in O(1) average time using a hash table and doubly linked list.

Hash TablesQueueLinked ListsAlibaba Group
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3
Metrics5 questions · ~44 min
Diagnose a Sudden DAU DropHard

Investigate whether an 8.2% DAU decline is driven by product breakage, logging issues, or normal seasonal patterns.

DAU/MAUDiagnosisTime SeriesAlibaba Group
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4
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 TradeoffAlibaba Group
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5
Execution5 questions · ~44 min
Managing Critical Cross-Team DependencyMedium

Explain how you would manage a project at risk due to a slipping dependency owned by another team.

Risk AssessmentDependenciesScope ManagementAlibaba Group
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6
Product Sense5 questions · ~44 min
Align Product With User NeedsMedium

A framework for connecting user needs to business goals, then making product decisions with clear trade-offs and measurable outcomes.

User NeedsValue PropositionProduct VisionAlibaba Group
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7
More topics23 questions · ~202 min
Data Quality and Schema EvolutionMedium

Approach for handling schema changes and data quality checks in a high-volume data lake pipeline.

schema evolutionData ModelingQualityAlibaba Group
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 ServingAlibaba Group
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The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.