EPAM Systems Senior Software Engineer Interview Questions, Process, and Tips

Find if IP address belongs to ipv4 or ipv6

Discuss about your life importance if the earth is ending within few hours so that you can be on a limit seated spaceship

Q1. Java VM, Java Strings, Collections, Threads
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Q2. Git, Personal Projects
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Q1. Find duplicate element from array
Ans. 
Find duplicate element from array of strings
• Iterate through the array and store each element in a HashSet

• If an element is already in the HashSet, it is a duplicate
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Q1. Mule 4 vs mule 3
Ans. 
Mule 4 offers improved performance, enhanced error handling, and better support for modern integration patterns compared to Mule 3.
• Mule 4 has a more streamlined and efficient runtime engine.

• Mule 4 provides better error handling capabilities with the introduction of Try scope.

• Mule 4 supports more modern integration patterns like reactive programming.

• Mule 4 offers improved dataweave capabilities for data transformation.

• M...read more
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Q2. Design pattern mule 4
Ans. 
Design patterns in Mule 4 help in structuring and organizing code for better maintainability and scalability.
• Mule 4 supports various design patterns such as scatter-gather, choice, splitter, aggregator, etc.

• Design patterns help in solving common integration challenges and promoting best practices.

• For example, using scatter-gather pattern to send a request to multiple services in parallel and aggregate the responses.
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Q3. Life cycle API mule 4
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Q1. Mule 4 design api test
Ans. 
Designing API tests for Mule 4
• Use MUnit for testing Mule 4 APIs

• Write test cases to cover all possible scenarios

• Mock external dependencies for isolated testing

• Use assertions to validate API responses
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Q2. Batch job mule 4 process
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Q1. JavaScript Advance concepts
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Questions were on Basics of OOPS and they tell you to implement one or 2 programs

Q1. Salary Negotiation which depends on you and HR
Ans. That depends on you and if you have another opportunity you can demand more.
Answered by Sudhir A
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Q1. Question on Big data specifically spark, Hive and Scala. Asked me to write code on spark . Gave scenario based SQL queries and asked about optimization technique.
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