In person interview was formal, with an emphasis on technical questions. The hiring decision was made based upon recommendation letters, personal interviews, and an overall acceptance by the group I was going to work in. In general, it was a pretty standard postdoc interview process. I think anybody interviewing here should prepare for many questions about their prior research.

I only had a skype interview, which was pretty easy. The PI asked what I did during my PhD, most challenging stuff. Whether I did the research independently? He explained a lot on his own research. He did contact all the references I provided. Got the offer the next day