Signavio Senior Software Developer interview questions

First call with a non technical recruiter that went well and gave a good impression of the company. The second call was with someone who was in a people lead position. First I selected open slots in the calendar for that interview. I logged in, 10 minutes passed and no one in. By the time I was writing the e-mail, I received another e-mail from recruitment asking if I was still interested in the position since I had "missed" the call. Then I got a rearranged interview and there were a couple of red flags, started with a question such as "if diversity was important" since the founders and owners came from the same background and university. I read some reviews mentioning "nepotism", I wasn't expecting someone that is in a leadership position being so upfront about this. Kudos for honesty, but the fact that this was thrown out in the beginning of the interview was baffling. The second discomfort was that I was told that if we moved on to the next steps, that would be a code challenge, I would have 7 days to complete but the average candidate finished in 4 hours. So when exactly would be the time tracked? By commit log? By the time I accepted the challenge on Github? Or by the time I received an e-mail? The challenge was not difficult but it was not clear what they were looking for. There were some template of tests with some test cases and two requirements. They mentioned that they were looking for the balance between "building ourselves" and "not reinventing the wheel" and that it "makes for interesting conversations to follow up in the technical interview and code walkthrough", however I never received any feedback on the code that was provided.

The whole interview process was very slow and took very long. I interviewed with them over 2 months and worked on a tech challenge for them. 2 weeks after my submission I was told I passed the tech challenge but they decided to proceed with other candidates who are a better cultural fit. no other feedback was given. I decided to apply because I heared it's a nice company to work in as a developer. But the interview process was the worst I ever encountered.