Circle Internet Financial Software Engineer - Platform interview questions

The interview process involved 3 stages. Stage 1 - Online Assessment It was a medium Leetcode question. And one Easy SQL question. Stage 2 - HR screening interview. Introductory call with HR and they explained about the role and the company. Stage 3 - Onsite Interview This stage had four rounds of interviews. Two of them were technically (design + API implementation). Other rounds were with Hiring Manager and HR again. I did all my interviews well and received good comments from my HR, later I was said that they will contact me within next week with the decision. When I write a follow-up email regarding the decision to HR. I received a generic email stating they are not moving forward with the application. When I asked for feedback, HR ghosted me and never even bothered to give reason why I was rejected. I think interviewing here is just a waste of time like it mentioned in some review before. They have no intention to hire people.