Phone interview was more about specifics of Java/J2EE technology. 1. What's the diff between interface and abstract class 2. Implement Fibonacci series. Can you implement the same using recursion? Which one is more efficient? why ? 3. What are the steps involved in creating a complete workflow of a module in Spring and Hibernate 4. What is dependency injection? Why is it good? 5. Explain many-to-many mapping concept using Hibernate 6. Write the query to find duplicates 1:1 interview had 3 rounds 1. You have a Employee class and Dept class. Give a complete design and implementation to get all Employees grouped by Departments - Many-to Many mapping again with spring injections, they also checked why would you use certain data structures 2. Second round was based on the Producer Consumer problem and involved many threading concepts 3. Third round was based on design and performance oriented thinking. Let's say you had a 10Gigs of a text file and you were to collect a certain pattern of string and store it in DB. What was the most efficient way of doing it ? The advice is: Be good in Collections, Threads and Performance related questions Work culture is good but very hectic. Agile, scrum methodologies are followed and there are pretty stringent deadlines. People are co-operative but one must have a lot of energy to find your way through gigantic code base and slightly complicated procedure to build and test the code. Good luck.