First round was a discussion with the manager and director

Second round was a general technical discussion and asked me to present a topic in ML.

Third round was technical discussion

The last was a compensation discussion when they told me that they don't have the budget. For anyone who is attending interview have a clear cut discussion about the compensation (They still come back and say you are lacking ML experience.)

The presentation was in Temporal Difference. There was an implementation on the Strategy pattern. And what kind of questions were there?