AI engineer, PhD · Switzerland, St. Gallen to Zurich
Hi, this is Hangyeol!
I am an AI engineer and a PhD candidate in computer science at the University of Geneva, Switzerland. I build ML systems that end up in real use: on a factory floor, in a trading desk workflow, inside a robot. Most of my work is LLM pipelines, agentic systems, and computer vision on messy, unstructured data. Here is my CV. Below are the projects I can talk about in depth.
now: finishing my PhD in November 2026, available from January 2027.
The LLM brain of the humanoid robot Nadine: a ten-agent LangGraph system and a ReAct agent, with long-term and visual memory.
Automatic surface-defect detection on 1.5 cm semiconductor parts for HBM, in production at a Korean manufacturer.
LLM pipelines that turn trading and storage contracts into structured data: option value per contract, and what changed between contract versions.
From a Swiss address to the rules that apply, the legal building envelope, and an Archicad-ready 3D model.
Live demos at UN summits, a bank, schools and a TV studio, and two user studies with 123 participants.
Can GAN-generated images fix extreme class imbalance in sewer inspection? An honest negative result, and a labelling problem found on the way.
