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Updated weekly · Last refresh Oct 17

Alibaba Group Backend Engineer Interview Questions

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

23questions
~3htotal time
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1
CodingStart here. 4 questions · ~36 min
Go Context FundamentalsMedium

Evaluates your understanding of Go context usage for cancellation, timeouts, and request scoping.

goAlibaba Group
JSON Schema ValidationHard
Practice

Recursively validate JSON data against a supported schema using type checks, structural rules, and logical constraints.

CodingProgrammingAlgorithmsAlibaba Group
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2
Execution3 questions · ~27 min
Java vs Golang MicroservicesMedium

Assesses your ability to reason about language trade-offs for microservice design and operations.

javamicroservicesAlibaba Group
Memory Optimization at Million RPSHard

Assesses your performance engineering skills focused on memory efficiency at extreme throughput.

Alibaba Group
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3
System Design8 questions · ~71 min
Notification System for MillionsHard

Assesses your ability to design scalable, reliable messaging and fan-out under heavy concurrency.

system architecturenotification systemAlibaba Group
Fault Tolerance for Multiple FailuresHard

Evaluates your approach to resilience, graceful degradation, and recovery in complex systems.

system designfault tolerancefailure modesAlibaba Group
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4
Behavioral & Leadership6 questions · ~53 min
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5
More topics2 questions · ~18 min
Database Sharding and PartitioningMedium

Evaluates your approach to scaling data storage and maintaining performance under load.

data consistencyAlibaba Group
Distributed Data ConsistencyMedium

Assesses your understanding of consistency models and techniques for distributed transactions.

data consistencyAlibaba Group
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
7-Day Rolling Active UsersMedium
Practice
Practice drill

Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.

Window FunctionsDate FunctionsRunning TotalsMetaSpotifyMeta IT
Month-Over-Month Retention QueryHard
Practice
Practice drill

Calculate next-month checking account retention for Chase customers with an online deposit during their first seven days.

sqlSpokeoJPMorganChaseNextdoor
Top Purchasing Categories QueryMedium
Practice
Practice drill

Write a SQL query to find the top three purchasing categories for users who registered in the last thirty days at Alibaba Group. Use completed purchases w...

Date FunctionsJoinssqlAlibaba Group
The finish line: interview-readyComplete all 23 questions plus 3 hands-on drills to finish this plan.