// Data Scientist & ML Engineer · Budapest
Recommender systems, a Slay-the-Spire AI, and the full-stack apps that ship them. I care about building models that are clear, measured, and honest about what they do.
§ 01
Tell it a show you loved and it tells you what to watch next. A Rust engine precomputed 649 million pairwise similarities across 37,000 titles in 16 minutes; fine-tuned 768-dimension embeddings, FAISS and Redis serve the answer in 4 ms when it is cached.
A bot that plays Slay the Spire as the Ironclad, talking to the game through CommunicationMod. A learning pipeline trains it; a C++ simulator is the referee, because a bot that misunderstands the rules learns the wrong game.
Daily puzzles with one rule: the server decides. It owns the puzzle, the date and your streak, and a single finished game is enough to keep the streak alive. Next.js on Vercel, Postgres behind it.
Wordle for anime characters: guess the hidden one, and every guess shows how close its series, species, hair, class and age are. About 120 characters, vanilla JavaScript, no framework.
§ 02
The slow request was not the model's fault. A factory built a new 140 MB embedding object on every call. Initialise it once and the same request takes 264 ms.
Holding 649 million similarity pairs in memory was the problem, so the fix was to stop holding them: stream the JSON as it is produced.
The Slay the Spire bot is checked against a simulator. When the bot's picture of the rules and the simulator's disagree, the bot is the one that is wrong.
§ 03
Third semester abroad, AI and machine learning coursework.
AI specialization at Eötvös Loránd University.
Risk Management Division, Fundamenta Housing Savings Bank - recognized for outstanding performance in risk modeling
Risk Analyst developing internal knowledge systems and database optimization for enhanced data accessibility
§ 04
Python
Pandas
TensorFlow
SQL
Rust
FastAPI
Docker
Redis
Spark
Kafka
React
Git§ 05
Anidle gives you attribute clues instead of letters. Green is a match, amber is close, and the arrows tell you which way the age lies. This round is a sample; the real one is a click away.
Open the arcade