Comple interview process had 4 rounds: Round 1: IQ Test This is an online test where you have to answer a total of 50 questions in 12 minutes. Usually, if attempt is more than 38, chances are you will clear this round. Round 2: Coding Test This was a simple coding test with 3 questions that needs to be completed in 90 minutes: Question 1: Find total substrings of a given string Question 2: Sort an array from nth position Question 3: Sort dates in given format Round 3: Technical Interview What are new features introduced in JAVA8? Can we have multiple inheritance in JAVA? What is ThreadLocal in JAVA? What are JUnits and how to implement them? Different design patterns I have worked on? How to accept different formats in REST service (XML , JSON) How to create custom immutable class? What is the difference between get and load method? Round 4: Architect Interview Mention steps and how to implement Spring DI on your own? What is the advantage of version ID in serialisation? Create a program to print Thread1, Thread2 and Thread3 5 times from 3 threads? Best way to implement Singleton? Internal working of HashMap?