Contacted me through linkedin, for a remote position. There was no personal interview. Rather they send me a Machine Learning excersice that I had to do in a week. I did it, it was average difficulty. I got the RMSE to 5%, that was good enough for me. But they spend 2 months to review the solution, just to send me a generic email telling me there were better candidates. I asked for feedback and it was not given. I'am afraid they needed free work. For me it seemed a little bit weird. Because the spend too much time reviewing, there is no personal contact, they don't provide feedback and the excersice was easy to average difficulty.