R1 - concentrated on my core skills like Javascript. Hoisting, promises, async await, event loop, etc There was one programming scenario which is kind of creating tree using javascript which is a kind of recursion. Really thanks to the interviewer, he made me completely comfortable and he was kind enough. R2- mostly focus on events, framework related, bubbling, denouncing &throttling, etc Thanks to him, he was very friendly. R3 - As he is from backend background, he was not clear in his questions to be honest, due to that i was unable to answer one simple ds question which was the reason for my rejection which i feel. There were few MR questions like why are you switching, etc One of the other question was design of filter sidebar, but i am not sure what was needed by the interviewer. Just a suggestion, if someone is really good at technical round and cleared R1 &R2. Its better to keep MR round which contains only behavioural interview and its okay to test technical but it should be something related to high level design. But a single DS don't judge ones knowledge. BTW, I knew the answer in bruteforce but couldn't give with optimistic solution. But overall, it was a kind of learning for me and definitely try for better opportunities next time. Thanks to Ramya HR team, the way she followed up was amazing and really thanks to her dedication as well.