I met with my adviser when he was visiting my grad school for a talk, presented my research in a condensed 15 minute ppt. He asked me a mix of technical and non-technical questions. I was offered the position the very next day.

Individual meeting with prinicipal investigator and other lab members, including other postdoctoral fellows, graduate researchers, and undergraduate students; Oral presentation consisted of work I performed during graduate school and ideas for projects I wanted to pursue in the new lab.