In the beginning PM reached me on LinkedIn. We had a quick call, and he briefly described the job opening. Then I received a technical assignment in my email (it required solving an algorithmic task similar to those in Leetcode). A week and a half later, HR contacted me and we had an interview, after which they sent me another technical assignment to take home. Next, there was a technical interview. Then HR wrote me that they needed to make a decision based on the feedback. And the following week she wrote that they had decided not to continue the process because they had expected more detailed answers for the architectural task at the technical interview.