At first, I had a quick phone chat with HR manager when I was told about the on-site interview process. It took about a month or so for them to finalize the date/time of the interview. When I got there, I had to talk to a HR director first who was mostly telling me about a company and I kept asking him as many questions as I could. Then, I went on to get interviewed by the hiring manager who asked me about my experience, why I chose their company and whether I still wanted to do my postdoc rather then going to industry. Next part was one hour presentation I had to give talking about my PhD project with an emphasis on skills required for the position. After that, I had about 5-6 30 min interviews with vice presidents, senior directors, scientists from various departments. During one hour lunch break I spoke very informally to my prospective immediate colleagues.

Overall, peoples are vey friendly. It was straightforward. Sometimes it was difficult to answer but overal it was smooth. They gave me the offer quickly and so it was helpful to move forward.