I had a quick call with the recruiter and after that I had 2 interviews with a colleague, peer and hiring manager. Whole recruitment process was pretty fast. However I could not get any response from the recruiter after the last interview. After 2 days, I sent an e-mail and he told that they wanted to move forward with other candidates. When I asked for the feedback, no answer again.. Giving feedback could not be that hard despite all of these efforts..