Netflix Senior Developer interview questions

There was an HR call followed by Hiring manager. Then there were two technical phone rounds scheduled back to back. In a binary search tree, find the most common ancestor. It was a pretty straight forward solution. Later on following by few generic technical question. In a multi threaded environment, write few code samples on synchronization.

Recruiter called me. He set up my telephonic interview. It was pretty straightforward and I was called for Onsite interview. The interview went well and the response I got from team was as if they liked me but I didn't get an offer. Later on I came to know the position was filled by some internal candidate even before the interview.