GitLab Software Engineer, Backend interview questions

All interviews took about a month. After I sent the application I was contacted by the hiring manager to organize a Zoom call. This was the general screening call, after that a technical interview followed. Before the technical interview I was sent a task, which was to review a merge request and provide comments on it. During the call I had to explain my comments and then share my screen to fix the tests in order for CI pipeline to pass. After that a behavioral interview with a team manager followed. After that the final interview, more or less the same as before was scheduled with a director of engineering. Three days after the final interview, which I thought went fine I received more or less standard email that GItlab will not be proceeding with my application. The reason was quite vague, the engineering team simply did not want to proceed. I understand that Gitlab aims for the great fit and tech skills, and almost all of the applications are rejected, but I feel like I spent 5 hours doing the interviews and double that preparing for the interviews for no reason. I would have prefer to be rejected ASAP so it would save everyone's time. The people I was interviewing were friendly, helpful and transparent. It's just that final decision was far from transparent, but that's life I guess.

The interview consisted in multiple steps, starting with the first screening call with a person from HR. All the interview got easy scheduled and the communication was good and clear. Next interview was technical and the next 3 were with managers and it was a discussion about technical and work flows. The technical interview was great, I really enjoyed it, I was very nervous but the pair did a great job guiding me on what I need to do. It was a pleasant experience for me. For the next interviews it was mainly discussions about workflows and also a couple of technical questions. In this interviews I had the chance to meet the team manager.