Revolut Software Engineer - Android interview questions

The interviewing process consisted of 3 stages: - Test on a web platform - Technical Android interview with an interviewer - System Design interview, where (surprise-surprise) a *backend* system had to be designed, including covering all backend-specific technologies and approaches. Android technologies weren't in the scope of this interview. The interviewer confirmed this is a usual thing and many people are confused during the actual interview. So there was not mistake. This last peculiarity wasn't mentioned before the interview.