Hey, I'mLennart Pries
I'm Lennart Pries, a passionate software developer focused on C#, PostgreSQL, and React. Here you'll find my projects and more about me.
Featured Projects
Fivora
A sovereign AI gateway for law and tax firms: strips personal data from prompts locally (Presidio, GLiNER, a local SLM) before they reach cloud LLMs like GPT or Claude, then restores it afterward. FastAPI gateway, React transparency UI, and Docker infrastructure for GDPR-compliant AI in sensitive industries.
Transformer Translation Model
A Transformer (encoder-decoder) model for English-German translation, implemented entirely from scratch in PyTorch — multi-head attention, positional encoding, and a custom BPE tokenizer. Trained on 5M sentence pairs from WMT17, ~28% BLEU score, model published on Hugging Face.
DrinkDoors
A drinking game app with React Native, Expo, and FastAPI. Multiple game modes, different categories, and the ability to add your own cards to the database.