First, it was a telephonic screening round from the hiring manager. Second round was with the HR to discuss salary details etc for the job.

The third round was a 4-5 hour round where I was asked to give a PhD presentation. After that I was interviewed by 5 people.

Questions were very technical and I was impressed by their depth and breadth of knowledge. One interview round was purely HR but all others were related to my PhD work.

Common questions:

1. Give an example to show you have used root cause analysis.
2. Have you used model-based optimization?
3. How do you identify key system parameters?