Meta Sr. Software Engineer interview questions

I've got one hr interview, then one coding challenge. I was provided with a little presentation to know how the interviews will be, and it was really helpful? The coding exercice wasn't really difficult and my interviewer was really kind

in total 6 rounds of interviews 2 coding interviews 4 others that include incident management, security and privacy system design, privacy system reading and writing Not very difficult but I was not ready in the coding interview