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Prep plan

Updated weekly · Last refresh Sep 22

Epsilon Software Engineer Interview Questions

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

50questions

~9htotal time

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1

CodingStart here. 15 questions · ~160 min

Write Fibonacci Series CodeEasy

Generate the first n Fibonacci numbers using an iterative algorithm with linear time complexity.

Swap Two Numbers ProgramEasy

Practice

Swap two integer values safely using Python tuple assignment and constant extra space.

Epsilon

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2

SQL & Data Manipulation15 questions + 1 drill · ~170 min

Find Duplicate NamesMedium

Find repeated employee names in Epsilon's directory using GROUP BY, HAVING, a subquery, and department joins.

SQL vs NoSQL DifferencesEasy

Query a comparison table to present the key structural and operational differences between SQL and NoSQL databases.

nosqlJoinsData Wrangling

Ramsey SolutionsIInnovaccer

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3

System Design7 questions · ~74 min

Architecture and Technology ChoicesMedium

Evaluates your understanding of system architecture decisions and their impact.

architecture

Epsilon

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4

Execution4 questions · ~43 min

Different Types of Segmentation in AEPMedium

Evaluates understanding of AEP segmentation concepts and practical usage.

Epsilon

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5

Behavioral & Leadership4 questions · ~43 min

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6

More topics5 questions · ~53 min

Multi-threading and ConcurrencyHard

Evaluates your understanding of concurrency and your approach to correctness and performance.

memory managementmultithreadingaws

Epsilon

Explain CI/CD PipelineMedium

Evaluates understanding of build, test, and deployment automation.

CI/CDDevOps

Epsilon

Handle Out-of-Memory ErrorsMedium

Assesses debugging and mitigation approach for runtime memory failures.

Epsilon

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The finish line: interview-readyComplete all 50 questions plus 1 hands-on drill to finish this plan.