Standard procedure. I was refereed by a friend. My resume is handed to the hiring manager. Received call from the manager a few days later, asking about experiences, background, accomplishment. Then a onsite interview is setup, and I met with five different groups of people on the other day. White board coding in C++. Not very difficult questions. But need get ready.

first an email with a recruiter, then a phone call with HR, then I came into to office for a morning and met with 3 team members and the manager then a follow up with HR