The first round was a ml take home project, which I did very well. The second round was a coding skill interview 1 on 1 which I did a really good job. There were more round after that. I don't know why companies have so many rounds of interviews. They rejected me in the second round(coding skill) because of lack of the machine learning experience which was pretty obvious from my resume. They didn't ask any question about my ml background and just rejected me because I didn't have experience. That is a none sense reason for a coding skill set round. They mentioned I did a good job in the coding assessment but just lack of experience in machine learning which is again none sense to me. I have a feeling that the interviewer was simply a racist person who already wanted to reject me for some reason. If you want to reject a person for a reason at least have a strong argument.

CEO call me and ask some basic questions about background. Then he gives me a technique test a week later. The interview is on Skype and the interviewer is very nice. The duration is about 1 hour and write some code. I finished with half more time than he gave me and he just encouraged me to think more and fix some bugs. Overall a very good interview experience..