I applied the last week of August and was contacted for a phone interview the next day. I ended up doing three technical phone interviews, with the last one in October. So, the phone interview process alone took six weeks. The first interview was rescheduled, but then they called anyway, which encompassed the first two technical interviews. I was told the second interview would be more embedded-focused, but it was not. The interviewer spent the first 15 minutes trying to get me the Google Docs.

Know your binary trees and hash tables.