Why system design is my favorite interview

System design interviews provide a high signal for evaluating engineering candidates by highlighting their experience and decision-making processes. These interviews focus on designing scalable systems, asking business and engineering questions, and showcasing practical knowledge over theoretical knowledge. The best candidates demonstrate flexibility, experience, and the ability to evolve systems over time. Unlike leetcode interviews, system design interviews improve with experience and are great for assessing a candidate's practical skills and fit for a team.