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Updated weekly · Last refresh Oct 17

Sendbird Software Engineer Interview Questions

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

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1
PipelinesStart here. 4 questions · ~37 min
Group Chat Schema and CachingHard

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

cachingschema evolutionData ModelingSendbird
Scalable Push Notification DeliveryHard

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

Stream ProcessingmonitoringscalabilitySendbird
WebSocket Chat ArchitectureHard

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

state synchronizationfault tolerancewebsocketsSendbird
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2
Coding4 questions · ~37 min
Longest Online Consecutive RunMedium
Practice

Find the longest contiguous run of online users in a presence log using a single linear scan.

frequency countArraysloopsSendbird
Message Failure Detection and RecoveryHard

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

error handlingQueueSendbird
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3
Behavioral & Leadership6 questions · ~56 min
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4
More topics3 questions · ~28 min
Optimizing Python Async ConcurrencyMedium

Tests your ability to write non-blocking async code that performs under concurrency.

asynchronous workpython servicetechnical knowledgeSendbird
Set Up Sendbird SDK Chat ClientEasy

Tests your practical ability to integrate Sendbird SDKs and configure real-time chat clients.

customer supporttechnical experienceSendbird
Debugging Third-Party API BottlenecksMedium

Tests your ability to diagnose and resolve latency and throughput issues in external dependencies.

performanceDebuggingtechnical knowledgeSendbird

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