Alibaba Group Machine Learning Engineer Interview Questions

The questions to prepare for a Alibaba Group Machine Learning Engineer interview. Questions from real interview reports rank first. Updated daily.

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Machine LearningStart here. 8 questions · ~77 min

Handle rare positive labels in ad fraud detection with the right sampling, loss design, validation, and thresholding strategy.

Diagnosing Vanishing and Exploding GradientsMedium

Explain how to detect vanishing or exploding gradients and stabilize deep neural network training.

Neural NetworksDeep Learningoptimization

Alibaba Group

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System Design4 questions · ~39 min

Design an end-to-end product recommendation system for a large e-commerce marketplace with strict latency and freshness needs.

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 Serving

Alibaba Group

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Coding6 questions · ~58 min

First Index in Sorted ArrayMedium

Practice

Use lower-bound binary search to find the first occurrence of a target in a sorted array.

binary searchArraysAlgorithms

Alibaba Group

Longest Palindromic SubstringMedium

Practice

Find the longest contiguous substring that reads the same forward and backward.

coding challengeDynamic ProgrammingStrings

Alibaba Group

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Behavioral & Leadership5 questions · ~48 min

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