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Top 50 data architecture Interview Questions

The most frequently asked data architecture questions across all roles and companies, ranked by real interview frequency. Updated daily.

50questions
~7htotal time
92companies covered
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1
PipelinesStart here. 43 questions · ~365 min
Design Real-Time Feedback Ingestion PipelineMedium

Design a real-time pipeline for ingesting human feedback events with validation, replay, and support for evolving schemas.

data pipelinereal-time ingestiondata architectureAnthropicEEcolabAAnswer Digital
Choosing Data ArchitectureHard
Recently asked

Explain how you evaluated scalability, reliability, cost, latency, maintainability, and data quality when choosing a data architecture.

considerationsTrade-offsdata pipelinesDDelivery HeroBMW GroupBByteDance/Tiktok
Real-Time AI Data Processing ArchitectureHard

Design a fault-tolerant real-time pipeline that ingests, validates, transforms, stores, and serves data for AI applications.

data pipelineInfrastructureStream ProcessingSynertexWWinfo SolutionsWe Are Meta
Migrate Legacy Data to AI-Ready CloudHard

Design a phased migration from legacy data infrastructure to a governed, scalable cloud platform that supports analytics and AI workloads.

data pipelinecloud architecturedata migrationSynertexAvidXchangeSiemens Energy
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2
System Design3 questions · ~25 min
Design ML Architecture for Legacy DataMedium

Design an ML data architecture that works with legacy systems while supporting scalable training, serving, and monitoring in production.

scalable architecturelegacy systemsdata architectureTEKsystemsDXC TechnologyOliver Wyman
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3
More topics4 questions · ~34 min
SQL and Snowflake ArchitectureMedium
Practice
Recently asked

Explain how you used SQL to diagnose a Snowflake performance issue and improve query efficiency.

analytics toolsdatabase optimizationlarge datasetsSnowflake ComputingVVtekis
Choosing a Data Modeling TechniqueMedium
Practice

Use normalized revenue data to produce an analytics-ready monthly revenue view and justify the modeling choice.

Decision Makingfact tablesnormalizationFactored
Driving Adoption of New ArchitectureMedium
Recently asked

Tests influence without authority in a data engineering context, especially around stakeholder buy-in, technical change management, and measurable adoption outcomes.

Influence Without AuthorityStakeholder Managementdata architectureBarclaysTTata Consultancy ServicesNyc Staffing
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Hands-on SQL practiceWrite and run real queries in the editor. 1 drill · ~10 min
Monthly Sales Trends by CategoryMedium
Practice
Recently asked
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
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