It was easy regarding questions, they let you finish the task but have a secret time tracker if you are fast enough. Tasks include DSA and they ask several platform specific questions at the end. Also including IQ test
I interviewed at M2M Services (Nadezhda, Kaluzhskaya Oblast')
Interview
They weren't really cool at the call centre, don't recommend. They treated us very badly and the terms were bad.
Maybe other positions are good, but not this one .