I applied on the jobs portal directly and got a mail from the recruiter a few days later. The first 2 rounds were scheduled on the same day. Round 1 was based on frontend dev - Build an autosuggestion field with a provided mock API in your preferred language/framework. I completed this solution in time and was able to answer a few questions after the implementation too. I guessed the interviewer was happy with my performance. Round 2 was based on Algo and DS. There were 2 questions that I had to code. The interviewer was helpful to provide hints to guide me in the right direction. I completed both questions well before time. Round 3 and 4 were scheduled a few days later and on the same day. Round 3 was system design where I was asked to design a Whatsapp like chat application. I was driving this round and taking the interviewer through all the steps starting from requirements, API design to performance improvements. Round 4 was a behavioral round where we went over my work experience. The projects I have worked on. Scenarios where I was not able to deliver by a deadline or where I had a conflict with a colleague. It was a good discussion altogether and I got to know about their products too.