A 20 minutes presentation of my research works. Basically, it is a smaller presentation than the ones you did at conferences/seminars. The interviewer will ask questions regarding the details. Pretty easy if you are familiar with your own works.

First round HM interview, project Q&A. Second round Python coding, ML basic algorithm (k-means and KNN). Third round, tech interview about projects. Like the ML design of speech synthesis. 1 week later offer call.