You need to travel to the office where they mention, but you will get notified only a day before the interview. I was travelling from coimbatore to chennai unplanned. Interviewer was very good talented. He asked almost everything in depth. react, node, optimization, docker, cicd deployment, security, testing, he gave his laptop and asked to write code, so be prepared. He even asked me to write some in papers to check how confidence you are. It was a nice experience.