Thimofej Zapko
Fifteen, self-taught, already shipping. This is the human behind the build.
01 / Work
What I build
By day I'm still in school. Everywhere else I'm building at yesterday, a studio with one rule we don't break: think human, build AI. We turn real, hard-won knowledge into agents for companies that are sick of generic chatbots.
Whatever hours are left go into my own ideas. Building them is the easy part. Finishing them is the fight. Ask me what I'm obsessed with this week and you'll get the honest answer.
Hackathon winner · STARTPLATZ Cologne · at 14
Email checker
An n8n workflow that turns your inbox into voice notes and lets you answer out loud. Had a paying customer by the end of the week.
Studio · think human, build AI
yesterday
Where I show up and build, day after day. AI agents that turn what a company actually knows into tools it actually uses.
02 / Life
Who I am
I'm Thimofej, 15, and nobody handed me any of this. I taught myself to build.
It started with one hackathon. Total beginner, no clue what I was doing. That's the exact moment tech grabbed me and never let go. One question has lived in my head ever since: what can AI really become?And while I chase that, I'm quietly building a better version of myself too.
I start far too many things and finish far too few. But the ones I do finish, I make really good.
03 / Likes
What I like
First, the thing everything else rests on: I love Jesus Christ, and He loves me. Take that away and none of the rest holds up.
Beyond that, honestly: church, sport, and way too much doomscrolling (I'm working on it). I barely listen to music. And the real project isn't a hobby at all. It's becoming a better person.
Two unpopular opinions while you're here: Mbappé is overrated, and people should take faith a lot more seriously.
Best döner in town? Ali Baba. There's nothing to discuss.
04 / Writing
Writing
Notes, half-finished thoughts, things I only understand once I've written them down in public.
Read the notes →05 / Contact
Let's talk
Building something, hiring someone, or just want to say hi? The inbox is open, and I actually read it.
thimofej@yesterday-ai.de