AI engineer and builder. Technical co-founder of Founta.

About

I'm Tun. AI engineer, builder, and the kind of person who reads Never Split the Difference and Zero to One back to back and immediately applies it to whatever I'm working on.

I build software end to end, and the companies around it: from the first line of code to the product in someone's hands.

I care deeply about problems that affect people daily but still have terrible solutions. That's what drives what I build.

Luxembourgish by origin, which means English, French, German, and Luxembourgish are all just... normal. Building across borders comes with the passport.

These days that's two things: Founta, where I'm technical co-founder, and TK MEDIA, my software studio.

Technical Co-Founder

Founta

I'm the technical co-founder of Founta, where we're building the future of racket sports with AI. I own the engineering end to end: the mobile apps, the backend, the ML pipeline, and the infrastructure behind it.

🥈 2nd at AI Beavers founders hackathon, Hamburg.

Website coming soon

My Software Studio

TK MEDIA

TK MEDIA is a small software studio I started to build and ship products fast. We focus on web apps and AI automation, and we build and own our own products, including ExpenseMate and NegotiationEdge.

Visit TK MEDIA

Experiments & Tools

A couple of noteworthy tools I built along the way.

Text2UML

Turn natural language into UML diagrams for faster system thinking.

A VS Code extension that automatically generates graphical UML representations from textual diagram descriptions. Built as my Bachelor's thesis at RWTH Aachen, it combines a Java-based Language Server Protocol backend with a React + D3.js visualization frontend.

JavaTypeScriptReactD3.jsMontiCore
View project

Tennis Coach AI

RAG-powered tennis coaching from 33 real coaching transcripts.

A retrieval-augmented generation system trained on 601 chunks from real tennis coaching sessions. Uses hybrid search (BM25 + vector similarity) to find relevant coaching advice, supports English and German with auto-detection, and cites its sources. The prototype that started the thinking behind Founta.

FastAPIPostgreSQLpgvectorOpenAI APINext.jsPython
Try it live

Connect

Interested in what I'm building? Let's connect.