From Dev junior to Leader: how to go about multiplying your impact

When you’re a dev, being more productive doesn’t necessarily mean working longer, taking fewer breaks or just knowing the techies better. The super-engineer in your team always seems to accomplish in a week what it would take you a month to slave over. And he even has time to help you and to test that great-looking new package! But how does he do it?
Let me introduce you to some of the key factors that helped me, as a software engineer, to multiply my impact by 10, then as a manager, to expand the skills of the devs at Google, then at Bayes Impact.