Top 25
Prep plan
Updated weekly · Last refresh Aug 30

VTG Data Engineer Interview Questions

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

25questions
~4htotal time
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1
CodingStart here. 4 questions · ~35 min
Merge Two Sorted ArraysEasy
Practice

Merge two sorted arrays into one sorted array using a two-pointer linear scan.

ArraysSortingTwo PointersVTG
Efficient Data Retrieval Data StructureMedium

Tests your ability to choose and implement appropriate data structures for performance requirements.

Hash TablesSearchingTreesVTG
Python Data Cleaning ScriptMedium

Tests practical data cleaning skills and ability to implement robust transformations.

Hash TablesArraysStringsVTG
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2
Pipelines13 questions · ~114 min
Handling Missing Data in PipelinesMedium

Approach for handling missing data in an ML data pipeline, including validation, imputation, and safe downstream consumption.

InfrastructureETLBatch ProcessingVTG
Secure DevOps Data PipelinesMedium

Approach for embedding security controls into data pipeline delivery, orchestration, and operations.

InfrastructureOrchestrationQualityVTG
Design Scalable Pipeline InfrastructureHard

Design the core pipeline infrastructure for a new project, with attention to orchestration, data quality, idempotency, and future scale.

InfrastructureToolsQualityVTG
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3
Behavioral & Leadership6 questions · ~53 min
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4
More topics2 questions · ~18 min
SQL Query for Complex SchemaMedium

Tests your SQL skills for querying and extracting data from complex schemas.

sql querydata extractionVTG
Optimize a Database QueryMedium

Tests practical SQL tuning experience and measurable performance improvements.

Window FunctionsJoinsAggregationsVTG
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 25 questions plus 3 hands-on drills to finish this plan.