Had two phone interviews and a onsite interview (was done from a remote Google office using Google+ hangout). The process and interviews were difficult and unusual but clear, informative and logical. it included a sales mock up pitch via the phone which is the hardest stage. You do need to understand the industry and local market and be up to date with related technologies.

Initial phone screen with the recruiter, then a phone screen with the hiring manager. Onsite interview with 3 people, then one more phone call with the hiring manager, all over the course of 2 months. One the interviews were complete I worked with the recruiter to assemble a "packet". That is, detailed information on all my prior work and leadership experiences that was submitted to the Google hiring committee along with the interview write-ups.