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EPAM Systems Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 10 questions · ~101 min
Linked List ReversalEasy
Practice

Reverse a singly linked list in-place using iterative pointer manipulation.

RecursionLinked ListsArraysEPAM Systems
Implement Binary Search AlgorithmEasy
Practice

Write a binary search function to find a target value in a sorted array.

SearchingEPAM Systems
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2
SQL & Data Manipulation10 questions + 2 drills · ~121 min
SQL for Top Customer SpendMedium
Practice

Rank the top three EPAM India customers by item-level spending over the last three months using joins and aggregation.

aggregationJoinssqlEPAM Systems
Find Duplicate Rows in SQLEasy
Practice
Practice drill

Find duplicate client contact values using a CTE, join, GROUP BY, and HAVING.

Group ByHavingAggregationsEPAM Systems
Running Total by ProductEasy
Practice
Practice drill

Calculate daily and cumulative product revenue with CTEs, joins, date series, and window functions.

Window FunctionsDate FunctionsRunning TotalsEPAM Systems
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3
Execution6 questions · ~61 min
Explain REST vs SOAP ClearlyEasy

Explain RESTful APIs and SOAP clearly, focusing on practical differences that matter for delivery and integration decisions.

Trade-offsScope ManagementEPAM Systems
Design a Scalable ApplicationEasy

Explain how you would design a scalable application, including trade-offs, risks, stakeholder needs, and how you define success.

Trade-offsRisk AssessmentScope ManagementEPAM Systems
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4
System Design9 questions · ~91 min
Design a Personalized Product RecommenderHard

Design an end-to-end product recommendation system for a large e-commerce marketplace with strict latency and freshness needs.

Feature StoreFeature DriftModel ServingEPAM Systems
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5
Pipelines3 questions · ~30 min
Batch vs Streaming Data ProcessingEasy

Compare batch and streaming data processing, including when each fits best in a pipeline.

Stream ProcessingETLBatch ProcessingEPAM Systems
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6
Security & Infrastructure10 questions · ~101 min
OWASP Top 10Medium

Tests baseline web application security knowledge.

SecurityEPAM Systems
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7
More topics2 questions · ~20 min
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The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.