>How does he do Figma CTO-ing and at the same time building esbuild? That’s mad hours.

My guess is an alignment between purpose, fun, and skillset. I would say (not for the sake of bragging but for qualifying the legitimacy of my position) - I probably pull similar hours across CTO-ing, investing, and learning biochemistry. Then again, I'm commenting on HN and Evan isn't, so maybe not. :P