I was referred by an employee for this role. I interviewed on site. It was a day long one. I met severael people in the team. Was given a tour of the company building. I had 4 different interview sessions. I was asked a coding question where I had to answer the output of a snippet. There were questions about network design questions.

Applied online. HR contacted me two weeks later. I had a phone interview with the team leader and he asked me three questions: a brain teaser, a C++ question and how to debug a group of crashing computers