Revolut Senior Java Developer interview questions

First round was a pleasant talk to HR. HR asked several basic technical questions and a coding interview session was arranged. On a coding interview the task was a bit confusing for me. But interviewer was very friendly and with follow-up questions I've implemented some simple functionality (task was not difficult at all, but you have to focus on TDD and test coverage for all edge cases). I've made several stupid mistakes because I was nervous, but interviewer was OK with that because after he pointed on the mistakes I was able to fix them quickly. The next round was a technical interview. I had to implement a task on concurrency topic. 80% of all the following questions were related to this task and we discussed possible solutions for that task using locking mechanisms in Java and on a database level, transaction isolations etc. Other questions related to microservice architecture. There were two interviewers, both are very professional and easy-going. As a result I've received a reject because other candidates aligned better for the job position. I think it is a fair decision because during the tech interview I struggled to answer some questions.

1h coding interview, where you should build an architecture based on abstract requirements. You win if you correctly guess what the interviewer wants from you. Looks like not engineering, but extrasensory skills check