Domain Group Senior JavaScript Engineer interview questions

Before I describe the interview process, let me advise you this: Don't waste your invaluable time by completing their take-home coding test. They don't value the work at all. If you want a fair interview process, then Domain is definitely not worth a try. Don't get me wrong, I prefer take-home-project interviews any time to the useless white-board style interviews. But, unfortunately, Domain don't know how to execute this interview model correctly. The interview process itself was easy. It has 4 stages: 1. Phone screen with a recruiter 2. Non-technical interview with a manager 3. Take-home project 4. Final interview to discuss the project + technical interview I had pleasant experience with the first 3 rounds. The problem started during the 4th stage. One of the vital interviewer didn't show up and I was not informed about that. The interview went ahead anyways. Although I was a bit sceptical about it, I decided to continue. The remaining 2 recruiters seemed to be completely unaware of what was asked in the take-home project intructions. They asked why didn't I write unit tests for the project. I told them that the "requirements" section in the project instructions didn't list to write unit tests, and that it required me to only spend 4-5 hours for the entire development process. I also clarified them that the requirements are complex enough to take up the whole 5 hours time frame. They sounded as though they were convinced by my answer. And then after awhile, annoyingly, they asked why didn't I use any state-management library. I clarified them (again) that there was no mention of such requirement and the project itself was too simple to use state-management libraries. I then screen-shared them to show how I used other libraries to handle form validation, styling the components, etc. Again, they seemed to be convinced. And the interview completed after a few questions about JavaScript concepts. The judgement day arrived. The recruiter called me and said that they were happy to offer me a job, but, it's gonna be for a mid-level role and not for the senior-level role I originally applied for. The reasoning I heard was really absurd. They said I failed to demonstrate the required skills like "state managent", "writing unit tests", and "application architecture". No comments to the state management, and the unit tests part but "application architecture? Seriously? I swear, I was never asked a single question about that at all. I just learnt a lesson. Before spending time on developing take-home projects, I should first research a bit about the quality of the interview from that company.