I applied online through LinkedIn and received an email from a recruiter within a week to set up a call. The initial chat lasted about 20 minutes and covered basic background and interests, with no technical questions. The recruiter then scheduled the first technical phone interview. They called me one week after the first phone interview to schedule the next technical phone interview. One week after the second phone interview, they scheduled the onsite interview. The final onsite interview lasted 6 hours, from 10:00 AM to 4:00 PM, including 5 rounds and an hour for lunch. The onsite interview was in late December, so I received their reply in January after their Christmas holiday.

Two of the interviewers are group leaders or managers. They asked unexpected details about the projects and experiences, so you really should be an expert about what you did.