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Comet Interview Questions

The questions to prepare for Comet interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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1
ExecutionStart here. 4 questions · ~32 min
Choosing Monolith vs MicroservicesMedium

Explain how you would decide between a monolith and microservices for a new engineering initiative.

Trade-offsRisk AssessmentScope ManagementCComet
Prioritize When Scope Exceeds TimeMedium

Tests planning, prioritization, and execution judgment under constrained timelines.

time managementProject ManagementCComet
Testing for Distributed SystemsMedium

Tests your strategy for validating correctness, reliability, and regressions in distributed systems.

quality assurancedistributed systemsCComet
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2
System Design4 questions · ~32 min
Handle Sudden 10x Traffic SpikeHard

Tests scalability and resilience planning for sudden demand surges on Comet’s API.

scalabilityload balancingCComet
High Availability ArchitectureMedium

Tests knowledge of availability patterns and resilience design for Comet’s core service.

high availabilitydesign patternsarchitectureCComet
Design for High-Scale TrafficHard

Tests system design tradeoffs under time pressure for Comet’s high-traffic service.

system designscalabilityCComet
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3
More topics2 questions · ~16 min
Data Quality and Schema EvolutionMedium

Approach for handling schema changes and data quality checks in a high-volume data lake pipeline.

schema evolutionData ModelingQualityCComet
Optimize Performance BottlenecksMedium

Tests your ability to diagnose and improve performance in real engineering work.

performance optimizationtechnical experienceCComet

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