Marek Pizner
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Transforming raw data into strategic decisions. 10+ years building scalable pipelines, training ML models, and shipping production systems — from Slovakia to global clients.
// Technical Arsenal
// About Me
Currently a Senior Data Scientist at U.S. Steel Košice, building computer vision systems for industrial granulometry — UNet segmentation models analyzing real-time conveyor belt video streams, deployed end-to-end on Kubernetes.
Previously 6 years as a Senior Data Scientist at Zoniq, designing automated pipelines processing millions of records, building ML models end-to-end, and delivering client dashboards used for real business decisions.
Master's in Intelligent Software Systems from STU Bratislava. Outside work: weightlifting, running, books, and building finance tools that make data accessible to everyone.
// Projects
FIRE Calculator
Financial independence forecasting based on income, savings rate, and target expenses.
Rent or Sell
Financial decision engine comparing property rent vs. sell returns and opportunity costs.
Portfolio Advisor
Asset allocation analyzer using Modern Portfolio Theory and risk-return optimization.
Black-Scholes
Interactive option pricing via Black-Scholes formula with live parameter visualization.
Netflix Calculator
Determines subscription value by actual viewing time and entertainment cost per hour.
LexiBoost
Fun language-learning tool for English and Italian with spaced repetition.
Pigeon Empire
Idle clicker game — recruit a flock, feed the pigeons, and build your empire one poop at a time.