Purczeld Gergely

Full Stack Developer | Python · React · Data Engineering
I build data-heavy applications from the ground up — backend logic, frontend interfaces, and everything in between.
My core stack: Python (FastAPI), React 18, DuckDB, PostgreSQL, Oracle. I specialize in turning complex data workflows into clean, usable tools — admin dashboards, database explorers, ETL pipelines, and internal platforms.
What I bring to the table:
→ 10+ years working with enterprise data systems in banking & finance
→ Built a full-scale Python-based data processing engine (parser, interpreter, SQL support, 640+ validated tests)
→ Reverse-engineered proprietary binary formats at the bit level
→ Production experience with LDAP/OIDC auth, AG Grid, Monaco Editor, REST APIs
I'm comfortable with both greenfield builds and legacy system modernization. If your project involves data, databases, or developer tooling — let's talk.