Day 1:

I had a technical interview with one of R&D team leads, we wrote some code together, it was fun. On my next interview I met the infrastructure team lead, talked a little bit about my past exp and done some architecture questions.

Day two (HR called me the same day, so the whole process was super fast): Meeting with tech lead, some architecture questions again. Met VP R&D, some general questions. Met HR: For general HR and personality questions.

Couple days after I was called to get the offer :)

Interviewer drew some sw architecture diagram, I was asked to add some components to make it capable to deal with more traffic.