1 hour phone interview with the hiring manager, then a 4 hour on-site interview with 7-8 people I would be working with. Interviews were 1 or 2 people at a time. Most of the questions were behavior based, like whether I preferred to work on a team or alone or if I had ever gotten angry at a coworker. Some were technical, and those that were were based around the knowledge I stated I had on my resume.