I have scheduled the interview for 1 hour. The questions are mostly about Embedded C, System design, and the basics of electronics. There were also some unnecessary questions. I have answered all the questions and got the rejections without any reason. I strongly recommend not to apply to this company they judge you on your ethnicity.

1st round was virtual was a virtual 1-hour interview 2nd round was a design and role play situational interview (total of 3 hours). Overall a positive experience. I found it hard to tell if you are doing well or not though. One of the more interesting problems/interviews certainly.