Tobi Lütke runs a public company by day and ships open source at night, and the open source has 21,000 stars

Almost every Fortune 500 chief executive who claims to still be technical is describing a hobby they abandoned around their second funding round. The claim is cheap because nobody checks. Tobi Lütke's version is checkable, and it checks out: while running a public company worth many billions, he built QMD, an on-device search engine that gives AI agents persistent memory across sessions. It has more than 21,000 stars on GitHub. He wrote it over roughly 700 coding sessions, which is not a weekend and not a stunt.

The origin was always like this. Shopify exists because a German programmer in Canada wanted to sell snowboards online in 2004, found every available option miserable, and wrote his own store instead. The commerce empire is a side effect of a developer refusing to use bad software.

Aspiring comprehensivist

The phrase in his bio is the tell, and it is a deliberate one: comprehensivist is Buckminster Fuller's word for someone who refuses to specialize, who insists on understanding the whole system rather than owning one slice of it. Almost nobody at his altitude admits to that ambition, because executive culture rewards delegation and treats hands-on work as a failure to scale yourself. (Andrew Tattersall, also on this site, is building an entire app for people with the same refusal.)

He also put the ordering in writing: CEO by day, dad in the evening, hacker at night. Filed in that sequence, with the family in the middle, which is a quietly unusual thing to publish when you could simply write CEO and stop.

And when he decided AI fluency mattered, he did not commission a change-management programme. He wrote a memo saying reflexive AI usage was now a baseline expectation at Shopify, it leaked immediately, and he responded by posting the entire thing himself. That is the same instinct as writing your own store software: skip the intermediary, handle it directly.

Why the code still matters

The lazy read is that a CEO writing code is an indulgence, time better spent on strategy. The better read is that QMD exists because he wanted persistent memory for his own agents, could not buy it, and so built it, which is precisely the loop that produced Shopify twenty years earlier. The night job is not a distraction from the day job. It is where he keeps finding out what is actually possible before anyone briefs him on it.

Go read the QMD repo. It is a genuinely useful piece of software, and it happens to have been written by a man with an eight-figure calendar.

Shopify CEO by day, Dad in evening, hacker at night. Aspiring comprehensivist.

Tobi, in his own bio, which is the entire profile in nineteen words