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Updated weekly · Last refresh Nov 6

Alibaba Group Applied Scientist Interview Questions

The questions to prepare for a Alibaba Group Applied Scientist interview. Questions from real interview reports rank first. Updated daily.

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1
Machine LearningStart here. 3 questions · ~25 min
Data Preprocessing for Reliable ModelsEasy

Explain why data preprocessing matters, using a concrete supervised learning example with missing values, outliers, and mixed feature types.

Cross-ValidationFeature EngineeringSupervised LearningAlibaba Group
Handling Missing Values in MLEasy

Explain practical strategies for handling missing values in a supervised learning workflow, from diagnosis to modeling and validation.

Cross-ValidationFeature EngineeringRegularizationAlibaba Group
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2
System Design5 questions · ~42 min
Trade-offs in Data StorageMedium

Tests your ability to choose storage technologies based on workload, cost, latency, and reliability.

Feature StoreData WranglingModel ServingAlibaba Group
Designing a B2B AI Search EngineHard

Tests system design skills for retrieval, ranking, indexing, and end-to-end search quality.

ML RankingRetrievalRecommendation SystemsAlibaba Group
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3
Coding3 questions · ~25 min
Coding an ML AlgorithmMedium

Tests your coding ability and practical implementation skills for ML algorithms.

RecursionHash TablesArraysAlibaba Group
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4
Behavioral & Leadership5 questions · ~42 min
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5
More topics3 questions · ~25 min
Model Performance EvaluationHard

Explain how to select metrics, validate predictions, and analyze errors when evaluating a machine learning model.

model performanceevaluation metricsPrecisionAlibaba Group
Implementing a Large Language ModelMedium

Tests your applied experience building and troubleshooting large language model systems at scale.

Language ModelsFeature EngineeringDeep LearningAlibaba Group
State of the Art NLP AlgorithmsMedium

Tests your breadth of modern NLP methods and ability to reason about when to use them.

Language ModelsText ClassificationNamed Entity RecognitionAlibaba Group

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