Initial conversation with an employee on Phone with general questions. Second round was done by Mario on a 30 min call Scheduled on Amazon Chime with video on. Third Round done by someone named Paul under last minute change. Please note STUN, TURN protocol used on Chime so make sure use proper internet connection. Also, strictly asked not to use Google. Interviewer might allure you inbetween but don't use it. Hardly 2 question to be answered on STAR rest technical.