Jerry • Blessed Software Developer

If you want to stop being a Junior Developer. Do this: Rebuild one tool you use every single day, from an empty file, with zero outside libraries. Follow these steps: - Pick one tool you open every day without thinking, like a cache, a task runner, or a tiny router. - Write down the one feature you actually use and ignore the rest. - Read the official docs for that single feature until the inputs and outputs are clear. - Open an empty file and get the simplest version working end to end. - Add the one real case that breaks naive versions, like expiry for a cache or retries for a queue. - Write 10 tests that prove your version behaves like the real one. - Swap the real tool out of one small project and run yours in its place. - Measure where yours is slower and fix the worst bottleneck. - When the internals confuse you, ask AI to explain how the real tool solves it, not to write your version for you. Building the toy version is the easy part. Keeping your own version running through a full day of real work is what teaches you how the tool was actually engineered. Come back and tell me which feature you thought was simple and turned out to be the hardest part. Be honest. African engineers must be globally production-ready.