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Updated weekly · Last refresh Oct 17

EPAM Systems Data Engineer Interview Questions

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

50questions
~12htotal time
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1
SQL & Data ManipulationStart here. 12 questions · ~180 min
Last Weight Before Bus CapacityMedium
Practice

Use cumulative weight to find the last passenger who boards before the bus exceeds 1000 kg.

Data Manipulationdatabase queryingAggregationsEPAM Systems
Employee Salary Growth QueryMedium
Practice

Use prior-year salary comparisons to find employees whose compensation increased, while excluding incomplete records.

Lag/LeadDate Functionsnull valuesEPAM Systems
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2
Coding12 questions · ~180 min
Top Distinct Distances in PysparkMedium
Practice

Aggregate trip distances by customer and return the top 10 customers using a bounded heap.

aggregationAlgorithmsEPAM Systems
Odd Pairs in ListEasy
Practice

Check whether every non-overlapping adjacent pair in an even-length list has an odd sum.

ArraysArray ManipulationAlgorithmsEPAM Systems
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3
System Design12 questions · ~180 min
Partitioning S3 to Blob TransferHard

Compare partitioned and unpartitioned transfer of 20 TB from S3 to blob storage, including performance, reliability, cost, and operational challenges.

challengesdistributed systemsdata transmissionEPAM Systems
Incremental Ingestion from On-Prem to AzureHard

Design a reliable incremental pipeline from an on-premises source to Azure Blob Storage.

data securitydata ingestionhybrid cloudEPAM Systems
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4
Pipelines11 questions · ~165 min
Machine Learning and Deep Learning FundamentalsHard
Recently asked

Explain machine learning and deep learning fundamentals, then connect them to production data engineering responsibilities.

Data Qualitydata pipelineDeep LearningEPAM Systems
Azure Integration Runtime DifferencesHard
Recently asked

Explain Azure Data Factory integration runtime types and select the appropriate runtime for cloud, private-network, and SSIS workloads.

data integrationETLCloudEPAM Systems
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5
Behavioral & Leadership3 questions · ~45 min
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