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Updated weekly · Last refresh Oct 17

Chegg Backend Engineer Interview Questions

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

17questions
~2htotal time
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1
CodingStart here. 5 questions · ~41 min
Analyzing Recursive Time ComplexityMedium

Explain Big O notation and how to analyze the time and space complexity of recursive algorithms.

Recursiontime complexityAlgorithmsChegg
Missing Line Coding TaskMedium

Tests your ability to reason through Java collection behavior to produce correct output.

collectionsChegg
Process vs ThreadMedium

Evaluates your fundamentals of concurrency concepts relevant to backend development.

javaChegg
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2
System Design4 questions · ~32 min
Fault Tolerance StrategiesHard

Evaluates how you design for failures, retries, and graceful degradation in production systems.

fault toleranceChegg
Load Balancing in MicroservicesMedium

Assesses your understanding of traffic distribution, health checks, and resilience in microservices.

load balancingarchitecturemicroservicesChegg
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3
Behavioral & Leadership5 questions · ~41 min
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4
More topics3 questions · ~24 min
Understanding Database Indexing PurposeMedium

Explain the purpose of using indexes in databases and their impact on query performance.

Chegg
Purpose of GraphQLEasy

Assesses your understanding of GraphQL’s role in API design and data fetching.

Chegg
SQL vs NoSQL for Go-to-Market DataEasy

Explain how SQL and NoSQL differ in schema, consistency, scaling, and Demandbase-style analytics use cases.

JoinsData WranglingChegg

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Inner Join vs Outer JoinEasy
Practice
Practice drill

Demonstrate how INNER JOIN and FULL OUTER JOIN handle matching and unmatched rows.

JoinsData Wranglingnull valuesRocketNeenOpaleBay
Find Active Chegg Study UsersEasy
Practice
Practice drill

Filter active Chegg Study users with more than 3 completed sessions using WHERE and ORDER BY.

JoinsData WranglingAggregationsChegg
Handling Missing DataEasy
Practice
Practice drill

Replace missing sales fields with defined defaults and return a consistently ordered dataset.

missing valuesdata cleaningnull handlingUniversity of MinnesotaThe Home DepotNationwide
The finish line: interview-readyComplete all 17 questions plus 3 hands-on drills to finish this plan.