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

Q1. SOLID Principles, Spring Framework, Stream APIs from Java 8, OOPS
Add your answer
Q2. Microservices, Factory and Builder design pattern, Mocking private methods in junit test cases
Add your answer
Q3. Find the triplets in an array whose sum is 0 , complexity - O(n2)
Ans. 
Use nested loops to iterate through array and find triplets with sum 0.
• Iterate through array with two nested loops to find all possible pairs.

• For each pair, check if there is a third element that completes the triplet with sum 0.

• Store the triplets found in a separate array.
Answered by AI
Add your answer
Q4. Implementation of hashmap in Java 8, Bean lifecycle, difference between @Component and @Service, Front Controller, difference between PUT & PATCH, Authentication in REST APIs, how to disable junit test cas...read more
Ans. 
The interview question covers topics like hashmap implementation in Java 8, bean lifecycle, annotations in Spring framework, HTTP methods, REST API authentication, and disabling junit test cases during deployment.
• HashMap in Java 8 uses an array of linked lists to store key-value pairs, with the hash code of the key determining the index in the array.

• Bean lifecycle in Spring framework involves initialization and destruc...read more
Answered by AI
Add your answer

Q1. Touched all concepts of java, spring boot, microservices
Add your answer
Q2. Writing code using java8
Ans. 
Using Java 8 features to write efficient and concise code.
• Utilize lambda expressions for functional programming

• Use streams for processing collections in a more declarative way

• Leverage default methods in interfaces for backward compatibility

• Explore the new Date and Time API for improved handling of dates and times
Answered by AI
Add your answer

Situational, what you will do if some certain situation happens

Q1. Details about company, and payslip discussion
Add your answer

Q1. Collections Framework
Add your answer
Q2. Stream APIs Java 8
Add your answer
Q3. Microservices : Circuit Breaker, CQRS
Add your answer

Q1. Factory & Builder Design Pattern
Add your answer
Q2. Spring Boot annotations
Add your answer

Q1. Internals of c# asp net and expect twisted questions
Add your answer
Q2. Coding questions related to stacks
Add your answer
Q3. Sql optimisation
Add your answer
Q4. Entity framework
Add your answer

Q1. Senior on different GCP services
Add your answer

Q1. Different senarios on different gcp services
Add your answer

Q1. Discussion on salary expectations
Add your answer

Q1. React, JS, HTML,CSS
Add your answer
Q2. Deep dive in those topic
Add your answer

Some random question in Javascript ex: Closure,this,debounce, and custom hooks

Q1. Regarding team handling, testing, quality control
Add your answer