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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 weekly.

50questions
~7htotal time
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1
SQL & Data ManipulationStart here. 3 questions + 3 drills · ~54 min
Window Ranking in Ticket QueuesMedium
Recently asked

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

Window FunctionsRankingrow_numberZoom Video Communications
SQL Queries for RankingMedium
Practice
Practice drill

Rank active HSBC employees by division and return every employee tied for the highest or second-highest salary.

javasqlHsbc
Second Highest Trader SalaryEasy
Practice
Practice drill

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortingeClinicalWorksInformaticaSpectraforce Technologies
SQL Average Selling PriceMedium
Practice
Practice drill

Calculate weighted average selling prices by product using a date-range join, aggregation, and NULL handling.

leetcodesqlCostarCostar Group
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2
Execution5 questions · ~41 min
Schema for High-Concurrency BookingMedium
Recently asked

Tests database design judgment for concurrency, indexing, and correctness under heavy write contention.

schema designData ModelingconcurrencyZoom Video Communications
Rate Limiting for Public APIMedium
Recently asked

Tests system design for protecting APIs with rate limits while preserving availability and performance.

api designrate limitinghigh availabilityZoom Video Communications
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3
Coding21 questions · ~171 min
Shortest Path With Movement ConstraintsHard
Recently asked

Tests ability to design and implement graph traversal algorithms under constraint-heavy pathfinding.

shortest pathMatrixtraversalZoom Video Communications
Detect Cyclic Package DependenciesHard
Recently asked

Tests ability to model dependency graphs and handle cycle detection and resolution correctly.

dfscycle detectionGraphsZoom Video Communications
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4
System Design6 questions · ~49 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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5
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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6
Behavioral & Leadership6 questions · ~49 min
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7
More topics1 question · ~8 min
Optimize High-Volume Data PipelineHard
Recently asked

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

data pipelineperformancebottlenecksZoom Video Communications
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.