Pretty much a common interview process. In the beginning, there was a 1-hour phone interview. Then, I was invited to Sunnyvale for an on-site. There were 6 technical interviews, each one hour long. The second interview was with the hiring manager. While I was on my way back at the San Jose airport, the hiring manager called me to say that they had decided to make an offer.

Two interviews on resumes (prior experience), two on C and data structures, and two on networking fundamentals. The difficulty level is typical hard-core product company, which is kind of above average.