There are total of 3 rounds of interview. First round of interview is more informal discussion about your current experience and technologies which you worked.This is extremely easy round if you are already experienced in the role which you are trying. Second round is purely hands on and peer programming. You will be asked to keep a dev env ready with pre installed libraries and IDE. You will be asked to import the code when the interview is started. There are pre defined scenarios which you will be asked to write code. I was allowed to use Google. This is one of the thing which I liked about the interview. Sometimes syntax is not quite handy. But if you know, what you are supposed to do, you can easily crack the interview. My panel members were extremely helpful. They understood my level of experience and helped me to complete the challenge.