Aleksandar Petrovic

O mnie

Python developer with 7+ years building automation systems, data pipelines, and LLM. I gravitate toward problems that require both engineering precision and practical thinking — whether that's designing a concurrent system from scratch, scraping and structuring messy real-world data, or training models that actually hold up outside a notebook. I care about systems that are reliable, maintainable, and built to scale — not just ones that work on the first run. Featured Project — Real-Time Stock Alert System | Python · PostgreSQL · WebSocket · Multiprocessing ▸ Architected a 13-process concurrent system with zero shared state, ▸ Integrated Polygon.io WebSocket stream with <100ms latency ▸ Implemented hot-reload configuration from Excel files — changes applied at runtime with zero downtime or process restarts ▸ Built a centralized logging pipeline: rotating files (100MB cap) + PostgreSQL Currently open to part-time freelance engagements (up to 30h/week) and remote roles in fintech or data engineering.