I was referred by an employee from FB. Got an email from recruiter within 2 days to schedule a call. First round with recruiter for screening. Informed for next round with Hiring Manager. The recruiter was super helpful in helping me prepare for the interview, sharing the focus areas and what to prepare. Second round scheduled in the week after. HM was not feeling well but continued with the interview. Both rounds lasted were 30mins. Didn't make it to the last loop though.