I applied in a Moscow mobile engineering recruiting event when you could go to the interview after online quiz in Hackerrank. After it, they invited people to a Moscow Badoo office. There are a series of interviews in 30-60 minutes each: platform, computer science, system design. All interviewers were very nice and competent. In one part I wrote parts of code in the paper, in other they used a whiteboard for system model's design. The worst part of this interviews was organization. I passed in their building about 8 hours and only 2 of them were occupied by interviews, in the remaining time I just waited for the remaining parts - and they postponed every hour. I was completely exhausted by the waiting in the end.

Initial recruiter screen - talk about experience and the company plus the next steps - was advised there was no LeetCode style questions Two 1:1 sessions with live coding The live coding questions were relatively simple but both rounds focused heavily on Concurrency and Threading - when asked if this was a problem faced in the app - the interviewers both advised that they had an abstraction to prevent the problems they were asking - which seemed pretty silly given the focus. Despite the recruiter advising there was no LeetCode style questions, was given a Tree style question with 5 minutes left of the interview. Slipped up with a couple of items in the sessions but got to the correct answers when talking through with interviewer, these were minor seemingly unimportant questions (frame vs bounds etc) however the feedback noted I didn't get these right first time so was a pass. Also this was done in coderpad so the items that you would usually get for free such as auto completion for or compiler warnings were not there, so @ escaping etc if you missed that in the real world would just be added via a prompt, but missing it in coderpad (and then correcting) meant a fail Seemed like a cool company to work for, but the interviewers felt very gate keeper like given that they expect correct answers first time on things that would be minor issues and easy to resolve when actually doing real work The recruiter provides a feedback session after, however he did not seem to really make any notes about any of the above feedback, genuinely did not seem to care and felt like it was just going through the motions