When you start a new React project, the initial momentum is great. Components are flying, features are getting built, and everything feels clean. But as the codebase grows, that initial structure often crumbles. Files get dumped everywhere, components become bloated, and simple changes start to have ripple effects. I’ve been there, and it's not a fun place to be.

This is where system design for the frontend becomes essential. It's not just about backend architecture or a massive corporate process; it's a practical framework for making consistent, scalable decisions about your project's structure from day one. I believe adopting this mindset is a critical skill for any mid-level developer looking to build maintainable, long-lasting applications.