founder file
Marcus Ka
Korean solo founder based in Seoul. I build and run small digital products in public — live, dead, and paused.
founder context
Most founders show the highlight reel. I keep the whole record — what shipped, what died, and the decision behind each one.
I write from the middle of the work: launches that went live, experiments that bent the plan, mistakes that changed the next build, and calls I would make again. Live and Graveyard hold the products — this page holds the person who shipped them.
- Based in
- Seoul, South Korea
- Building since
- 2015
- Studio
- Solo founder, building in English
current signal
How I try to work
- Build the thing before I make the story pretty.
- Write down why I chose it while the result is still visible.
- Let the mistake teach the next build instead of hiding it.
studio model
What Madman Studio is
Built and run by one person
I build and run small digital products myself, from the first version to the boring maintenance after launch.
The work stays visible
Madman Studio keeps the record of what is live, what changed, what failed, and what I learned from it.
Dead products do not get erased
If a shutdown taught something useful, it stays in the record instead of getting polished out.