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Updated weekly · Last refresh Aug 30

SLB Backend Engineer Interview Questions

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

18questions
~2htotal time
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1
System DesignStart here. 6 questions · ~48 min
High Availability in MicroservicesHard

Assesses your approach to resilience patterns and failure handling in distributed services.

high availabilityfault tolerancemicroservicesSLB
Debugging Distributed Systems Under LoadHard

Tests incident debugging methodology, observability, and root-cause analysis in complex systems.

distributed systemsDebuggingSLB
Backend Architecture Trade-offsMedium

Evaluates your systems thinking and ability to make and defend architecture decisions.

system designSLB
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2
Behavioral & Leadership7 questions · ~56 min
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3
More topics5 questions · ~40 min
Balance Debt and Feature DeliveryMedium

Explain how you prioritize technical debt versus feature work while aligning stakeholders and protecting delivery speed.

Trade-offsScope ManagementPrioritizationSLB
CI/CD ExplanationMedium

Assesses your understanding of continuous integration and delivery practices and their purpose.

CI/CDexplanationSLB
Optimize Slow Queries and APIsMedium

Evaluates your performance engineering skills across databases and service endpoints.

database optimizationquery optimizationSLB
Data Structures and AlgorithmsEasy

Evaluates your problem-solving skills and ability to implement correct algorithms.

Data StructuresArray ManipulationAlgorithmsSLB
Threads vs ProcessesMedium

Assesses your fundamentals of concurrency concepts and system behavior.

processesconcurrencySLB

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Top Users by Recent Transaction VolumeMedium
Practice
Practice drill

Find the top 3 users by completed transaction volume in the last 30 days using joins and aggregation.

Data Analysisquery optimizationsqlTTier 1 BankRevolutChime
Top Content by Watch TimeMedium
Practice
Practice drill

Rank Disney+ Hotstar content by monthly watch time using aggregation, joins, and ROW_NUMBER().

Window FunctionsData Analysisquery optimizationDDisney+HotStar
Top Clinics by Patient VolumeMedium
Practice
Practice drill

Rank Oracle Health EHR clinics by distinct completed patients using aggregation and ROW_NUMBER().

Window Functionsquery optimizationsqlOOracle Health
The finish line: interview-readyComplete all 18 questions plus 3 hands-on drills to finish this plan.