System Design Technical Screening: I had a screening interview with a very biased interviewer. He did not provide an exact question or clear requirements to work on. He started with one system-related topic, then later jumped to another topic. He seemed to intentionally make the conversation convoluted and made it seem as though I was the one who did not understand the question he asked. The interviewer should have provided pre-written requirements; instead, the process felt very unfair. I spent 10 days preparing for this interview.