The First stage: To introduce my own research to the engineer, and he would ask some questions about the research and the knowledge about machine learning or related knowledge, and finally he asked me to do a coding test with a shared screen. The 2nd, 3rd, and 4th stage: More like natural communication about the research experience or value. However, I received rejected after the 4th interview, and I have no idea about why...

I took the coding test for the pre-screening process and still do not know the result yet. After the coding test, there might be two or more round for oral interviews.

Applying for a researcher position in RIT. The interview process was chaotic and confusing to me. The application was through one recruiting agency, but RIT hiring manager was always reluctant to communicate through the agency for the whole interview process. Basically, I was not informed of nothing about the interview beforehand. I got the confirmation of first interview 7 days beforehand. But it was the third day before the first interview, I was asked to prepare a presentation about myself and my past experience. The first round is a technical interview all around the presentation. I passed the first round and completed a codility coding test which was fairly easy. I asked the recruiting agency if they can ask the topic for the second round, but until the last day, the agency still told me hiring manager gave no response. Then it came to the second round, it was technical again, the same way as the first round. There were two interviewers. They looked nice but their questions made me very confused. Such as, one interviewer asked who is my PhD supervisor (I already graduated for a couple of years), the other person asked a detailed technical question which is not related to my research field. Not surprisingly, I got a rejection.