One senior engineer talk with me about 1hr. Ask me the behavior question and the question related to the resume. And also ask the contribution of your phd work. How many percentage of device physics in your research.

I initially got a sudden phone call which lasted for about 20 mins and asked some basic questions on my qualification and one question based on subject followed but a full day interview

Phone screening happened with two persons. Both of them asked basic device physics questions. Each of them had a duration of about 45-60 minutes. After that, I received an onsite interview. There I had to present my research work for 1 hour including Q/A regarding the research. Then there was 6 one-to-one interviews. Each session followed by basic device related questions and behaviorial questions.