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Updated weekly · Last refresh Oct 17

Zoom Video Communications Software Engineer Interview Questions

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

50questions
~7htotal time
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1
System DesignStart here. 4 questions · ~33 min
Design a Table and Distributed ArchitectureHard

Evaluates system design thinking for data modeling and distributed system architecture.

Zoom Video Communications
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2
Execution5 questions · ~41 min
Fix a Customer Request IssueMedium

Tests incident-style troubleshooting, prioritization, and communication with a customer-facing issue.

customer supportProblem SolvingZoom Video Communications
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3
Coding20 questions · ~163 min
Explain STLEasy

Assesses knowledge of standard library concepts and their purpose.

c++Zoom Video Communications
Tetris-Like Matrix ProblemHard

Tests your ability to model state transitions and implement a complex matrix algorithm.

MatrixZoom Video Communications
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4
Security & Infrastructure8 questions · ~65 min
SIP Session Timer PurposeMedium

Tests understanding of SIP session management and protocol behavior.

session managementZoom Video Communications
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5
Technical Fundamentals5 questions · ~41 min
WebRTC Protocol KnowledgeMedium

Assesses real-time communication protocol knowledge relevant to Zoom's video stack.

technical knowledgeZoom Video Communications
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6
Behavioral & Leadership5 questions · ~41 min
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7
More topics3 questions · ~24 min
Window Ranking in Ticket QueuesMedium

Explain SQL window functions and when to use ROW_NUMBER() versus DENSE_RANK() for ranked ticket analysis.

Window FunctionsRankingrow_numberZoom Video Communications
Optimize High-Volume Data PipelineHard

Tests performance troubleshooting, profiling, and storage-layer optimization in data pipelines.

data pipelineperformancebottlenecksZoom Video Communications
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Week-over-Week Retention QueryHard
Practice
Practice drill

Calculate Asana Spa Smart Goals week-over-week retention by first-use cohort using CTEs, joins, and date aggregation.

Window FunctionsDate FunctionsAggregationsAsana SpaMeta LogisticsZoom Video Communications
Rolling 7-Day Average Meeting DurationMedium
Practice
Practice drill

Calculate each Zoom account's rolling 7-day average meeting duration using date-based aggregation and window functions.

Window FunctionsDate Functionsnull handlingZoom Video Communications
VLANs, Subnets, and Broadcast DomainsMedium
Practice
Practice drill

Join network inventory tables to report VLAN broadcast domains, subnet coverage, and active devices.

NetworkingJoinsAggregationsVerkada
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.