I was selected to receive the early stage interview on campus, as I'm in my last year of study. The interviewer was very friendly and highly interested in my research. It was a casual 1-hour interview with me talking about my research project and the interviewer talking about the company and answering my questions. I need to wait for the company's decision on if I will receive onsite interview.

First pre-screen interview with hiring manager and more senior research member in area position was for. Invited for full day in-person interview which consisted of meeting HR to discuss details about working at company (benefits, etc.), followed by a technical seminar with members from the department that were free to join in the morning, and then one-on-one interviews with 5 senior department/group people with an individual one-on-one interview with the hiring manager and a final one-on-one with their manager (department head). Lunch was provided complimentary at their campus cafeteria on day of interview along with small breakfast and dinner the previous night with free lodging given even though I was only about 1.5 hour drive away (interview morning begins early - 7-7:30am).