The First Round was more focused on technical concepts and an in-depth understanding of how programming(JavaScript in my case, go through most asked interview questions from Google but understand them in more detail behind the scenes otherwise it can get tricky) and frameworks or library works. which was well constructed to also judge soft skills like attention to detail and problem-solving. The second round was more centered around application scaling, performance, and optimizations followed by more complex questions on the same. How does CDN work? Caching and more. A positive attitude and energy will always be a ++. The third round was the Behavioral round focusing more on past experiences, strengths, and situational questions to understand the mindset of the candidate.