One of the hiring team member reached out to schedule the first round of one-on-one technical interview. After passing the first round, another team member reached out to schedule a virtual on-site interview, which consists four interviewer back-to-back for four hours.

The interview felt kind of informal. It was with the manager of the team itself. It lasted 2 hours, it was supposed to last only 1 hour, and they asked C++ coding questions and memory and mutex-based theory questions