Sendbird Software Engineer Interview Questions

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

16questions

~2htotal time

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CodingStart here. 3 questions · ~25 min

Tests your ability to design reliable message delivery failure handling in a real-time chat system.

Real-Time Message DeduplicationMedium

Tests your ability to prevent duplicate messages while maintaining correctness in real-time chat.

Hash Tablesdeduplicationnetwork requests

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Session Rate Limiting DesignMedium

Tests your ability to implement fair, efficient rate limiting for high-traffic APIs.

network requestscachingData Structures

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Pipelines4 questions · ~34 min

Tests your ability to architect high-throughput notification delivery with reliability and scalability.

Group Chat Schema and CachingHard

Tests your ability to model and optimize storage and caching for large-scale group messaging.

cachingschema evolutionData Modeling

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Backpressure in Messaging Analytics PipelinesHard

Tests your ability to control throughput and prevent overload in streaming analytics pipelines.

Stream Processingmonitoring

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WebSocket Chat ArchitectureHard

Tests your ability to design resilient real-time communication and consistent client state.

state synchronizationfault tolerancewebsockets

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Behavioral & Leadership9 questions · ~75 min

Learning New Technology Under DeadlineMedium

Tests learning agility under pressure, plus ownership and prioritization when rapid technical ramp-up is required.

initiativeadaptabilitycontinuous learning

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The finish line: interview-readyComplete all 16 questions to finish this plan.