First I applied for the frontend staff engineer and after the first interview with the recruiter, he suggested I apply for the senior frontend position because he believed that I'm more fit for that position and I accepted it. then they told me that I was accepted for the first level and they sent me a test link I solved the test challenge and the test result was 100% done. But surprisingly after a week, they sent me an email that I was not fit for that position! it was terrible because I spent my time solving the challenge and they told me that I'm fit for that position before. moreover they didn't reply to me when I asked them any more questions.