Everyone is very friendly. No trip up questions from most. They are looking for the skills and knowledge you bring to the company. On-site interviews are with many people. Several phone screen with HR and hiring manager are prior.

I submitted my resume and was contacted my the HR recruiter. From there, I moved forward, HR scheduled a phone interview with one of the hiring managers. At the end of the conversation, the hiring manager said they would recommend me to come in for an on site interview. Some time did elapse before I was contacted. Like most companies, if they call you in to interview, expect a half a day of interviews.