Nobody teaches you how to think like a senior engineer because the people who can teach it are too busy doing it.
They review your PR and leave one comment that reframes the entire thing — "what happens when this queue backs up under load?" — and suddenly you see the hole you walked right past. You fix it. You move on. But that moment of recognition, oh, I wasn't looking at the right layer, evaporates in a week. And the next system you design, you walk past a different hole.
Most learning resources don't even try to replicate that loop. They teach you what senior engineers know. Not how they see.
That's what I've been trying to build.
The Senior Leap
