First i received a phone interview and we scheduled a in person interview. At the in person interview i interview with the a team of 4 people and they asked me basic questions and not so difficult. mostly to get to know me. I received a called afterwards to schedule a final interview where i interviewed with more people in the lab including all the research groups. Questions were more scientific at this point and more precise on techniques i had performed before. Overall not so difficult but intense since it lasted about 4 hours.