Total 4 rounds,
1st round was conducted for 1 hour, the interviewer asked me to share screen and write the code. All oops concepts were asked, Design patterns were asked.
2nd round was for 30 mins,
I was asked to write code and improve the performance.
ROund 3 with the Manager,
It was fun but went on for 1 hour. He asked me the questions based on my resume.
Round 4 was with HR.