Orientation Phone call, had about 1hr phone call where interviewer introduced company and its activities. followed by challenge code task, this was annoying part, they asked to create a simple app with specific framework, also required you write unit testing for such task. This task took a bit of time to complete, and hence they don't provide a constructive feedback on assignment it was really a waste of time. 2 technical interviews skype calls, one was asking basic tec questions, took around 20min, and other with backend senior engineer that i spent 40mins of interesting chat. Very reasonable interviewers