Cloud & Tools questions from EPAM data engineering interviews.
These cloud & tools questions are sourced from EPAM data engineering interviews. Each includes an expert-level answer. This set leans toward fundamentals — 5 easy, 1 medium, and 1 hard questions. Recurring themes are spark, etl, and partition — these patterns appear most often in real interviews and reward the deepest preparation. Many of these questions also surface at Infosys, so the preparation transfers across companies. Average answer is around 1 minute of reading — plan roughly 1 hour to work through the full set thoughtfully.
This collection contains 7 curated questions: 5 easy, 1 medium, and 1 hard. There's a strong foundation of fundamentals-focused questions — ideal for building confidence before tackling advanced topics.
The most frequently tested areas in this set are spark (4), etl (3), partition (2), sql (1), join (1), and optimization (1). Focusing on these topics will give you the highest return on your preparation time.
Start with the easy questions to warm up and solidify fundamentals. Medium-difficulty questions form the bulk of real interviews — spend the most time here and practice explaining your reasoning out loud. Hard questions often appear in senior and staff-level rounds; attempt them after you're comfortable with the basics. For each question, try answering before revealing the solution. Use our AI Mock Interview to simulate real interview conditions and get instant feedback on your responses.
How do you handle data security and compliance in a cloud environment?
Describe a scenario where AWS Data Pipeline is preferred over Glue. Why?
Describe how you would use AWS Glue to schedule and manage Spark jobs.
Discuss the key differences between AWS Glue, Lambda, and Data Pipeline for orchestrating data workflows.
Explain how AWS Glue interacts with on-premises SQL databases to extract data efficiently.
Explain when you would use Glue instead of Lambda for a data ingestion use case.
In AWS Data Pipeline, how would you design a process to copy only recently modified files from one S3 bucket to another?
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