I found the job through my personal/professional network. I discussed with my hiring manager before submitting my resume to HR. HR then scheduled an on-site interview. I started by giving a presentation to the whole group on my background. The interview was most of a day (10-4) and they took me to lunch as a team. I was interviewed by about 6 people, who asked a wide variety of questions. Some basic questions about my technical background and simple coding were asked, but no significant brain teasers. The atmosphere was one of mutual respect. I felt that both parties were feeling out a personality fit as much as for technical competency.

Two technical interviews with research PIs. Both were quite friendly and relaxed. The interviewer were positive and tried to help me respond the questions in case I didn't know the answer.