They said it was a very fast process. Not at all. First an HR interview. Then a coding challenge (medium difficulty). After this there come two tech interviews (1hr each) with 4 Tech Leads who want you to answer difficult questions about everything related to Software Architecture, security, paradigms. You're supposed to know everything about all the topics you can imagine. If you miss a single question, you're rejected. A couple of those guys don't have the best energy and can make you feel uncomfortable. They pretend to be friendly. Waste of time.