Let's scroll through years of commits and see what "senior" really means. You'll see me go from cranking out features to writing almost zero code as the only senior left, spending my days on reviews, design docs, and quality gatekeeping. Then watch the shift back to the trenches on a platform team, refactoring infrastructure, completing migrations, and building tools for other engineers. I'll show how the work changed, the roles I played, and the lessons I picked up along the way to survive it all. A practical, commit-by-commit look at what actually changes as you grow.