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Vtekis Data Engineer Interview Questions

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

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1
SQL & Data ManipulationStart here. 1 question + 2 drills · ~32 min
SQL and Snowflake ArchitectureMedium
Practice

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

analytics toolsdatabase optimizationlarge datasetsVVtekis
Optimizing Poorly Performing SQLHard
Practice
Practice drill

Optimize a PostgreSQL reporting query by reducing scanned rows, preserving unmatched records, and selecting the latest related review efficiently.

database optimizationlarge datasetsperformanceTata Consultancy Services (North America)PPriority Technology Holdings, LLCZillow
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

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

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
2
Pipelines2 questions · ~24 min
Incremental vs Full LoadsHard

Explain incremental versus full ETL loading and select the appropriate approach for an enterprise pipeline at MetLife.

Data Qualitydata integrationETLVVtekis
Diagnose Databricks Pipeline BottlenecksMedium

Design an OS-level and Databricks-native debugging strategy to find CPU, I/O, FD, and network bottlenecks in production ETL pipelines.

InfrastructureToolsDiagnosisVVtekis

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