I attended two telephonic rounds before the interview at the Hyderabad office. Both were Skype calls conducted from the US.

• 1st round: This round targeted understanding my overall experience.
• 2nd round: Three interviewers joined the Skype call and asked about core Java, Spring, etc. There was no coding test.
• 3rd round: In this round, I was given PHP code and asked to identify optimization methods. This test was conducted because of a PHP project migration to Java. Design patterns were also discussed.
• 4th round: This round was conducted by an Indian interviewer who asked about the most challenging aspect I had faced in my career. Overall, the interview process was acceptable.

Q. How to make a class immutable.

Q. What is the most challenging task you worked on?