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

Q1. Android Basic & Advanced Questions
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Q2. Love Coding test in the interview
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Q1. Solid principles
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Q2. Design patterns
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Hacker Rank coding test . .. . .. .

Q1. Java and SQl question. Basic to little advanced
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Q2. Interviewer is very helpful to make you comfortable
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Q1. It's Client Round, again like Technical
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Q1. Again, one more technical round with client
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Q1. Java 8 questions , lambda expressions
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Q2. Array and string related coding questions
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Java8 stream programming , data structure like array , string. Prepare top 20 question from internet for array , string , tree.

Spring boot question mid level

Q1. How do you make an object immutable, followed by how will you make a collection within your immutable object immutable as well so that the state doesn’t change
Ans. 
To make an object immutable, use final keyword for fields and provide only getters. To make a collection immutable, use Collections.unmodifiableList() or similar methods.
• Use final keyword for fields in the object to prevent them from being modified

• Provide only getters for the fields to ensure they cannot be changed externally

• For collections within the object, use Collections.unmodifiableList() or similar methods to cre
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Q2. Coding task - check specific characters in a string , proposed solution with string regex match
Ans. 
Check specific characters in a string using regex match
• Use regex pattern to match specific characters in the string

• For example, to check for digits in a string: /[0-9]/

• Use regex.test() method to check if the pattern exists in the string
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