I applied through a reference. Got an initial email showing interest in my profile. They did a phone interview to learn about my skills, interest and projects. Onsite meeting with upper management was pretty casual and conversational. As it was for the internship role, they were pretty easy compared to a full-time role.

The interview process was long, and involved a lot of people, but it was well prepared, and I was asked some solid questions which prompted further research in my spare time. The staff was very polite and welcoming.