Top 21
Prep plan
Updated weekly · Last refresh Oct 17

Zoom Video Communications Data Engineer Interview Questions

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

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1
CodingStart here. 5 questions · ~63 min
Longest Subarray With Target SumMedium
Practice

Use prefix sums and a hash table to find the longest continuous subarray with a given sum in O(n) time.

Hash TablesArraysSearchingZoom Video Communications
O(1) Insert Delete Random SetEasy
Practice

Implement a set-like structure using an array and hash map to support insert, delete, and random access in average O(1) time.

Hash TablesArraysData StructuresZoom Video Communications
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2
Pipelines4 questions · ~50 min
Handle Late Data in StreamingHard

Design a streaming pipeline that can absorb late-arriving events while keeping aggregates correct and downstream tables stable.

Stream ProcessingIdempotencyData ModelingZoom Video Communications
Design High-Throughput Event PipelineHard

Design a real-time event pipeline that can handle millions of events per second with sub-second latency.

data pipelineevent processinglatencyZoom Video Communications
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3
SQL & Data Manipulation5 questions + 2 drills · ~83 min
Relational Schema for BillingHard

Tests database design, normalization, and integrity constraints for transactional billing data.

transactionsdata integrityData ModelingZoom Video Communications
SQL for Transaction PaymentsMedium

Assesses SQL problem solving and data modeling skills for transaction-level payment data.

sqlData ModelingZoom Video Communications
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
SQL to Find Operational InefficiencyMedium
Practice
Practice drill

Identify Revolut merchants with high payment failure rates and report related support-resolution metrics.

Joinsbusiness problemsqlRevolut
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4
Behavioral & Leadership5 questions · ~63 min
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5
More topics2 questions · ~25 min
Handling Architectural Stakeholder ConflictMedium

Tests conflict resolution and influence when a stakeholder challenges an architectural decision with meaningful business or technical stakes.

Conflict ResolutionStakeholder ManagementCommunicationZoom Video Communications
Distributed Rate Limiting for Zoom APIsHard

Tests system design for distributed throttling, correctness, and scalability under load.

distributed systemstechnicalsolution designZoom Video Communications
The finish line: interview-readyComplete all 21 questions plus 2 hands-on drills to finish this plan.