Google

I first had a 45-minute phone interview that involved one easy programming question. A few days later, I was contacted about having a longer interview at their office in Seattle. They flew me to Seattle for the interview. The interview was 5 hours

It was hard. Several rounds of phone interviews, followed by several rounds of in-person interviews. Then an IQ test. Then a background check. Then a personality test. Then I passed.

The first phone call was the interviewer trying to see which position one would best fit. After this, an email was sent with the day of the actual coding question interview.