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justgodtears/README.md

Hi, I'm Oliwier 👋

Aspiring Machine Learning & Data Engineer
Building data pipelines and automation • CS student (AI specialization) • C# RPA Developer @ ING

LinkedIn Hugging Face

🎯 What I'm working toward

I'm focused on growing into a Machine Learning Engineer / Data Engineer role. My path runs through real-world automation and data work: I started in logistics, taught myself Python to kill the repetitive parts, and built that into hands-on experience with pipelines, APIs, computer vision, and cloud data tooling.

  • 🔭 Building toward ML/DE: end-to-end data pipelines, computer vision, and ML projects
  • 🎓 Studying: Computer Science, specialization in Artificial Intelligence
  • 🏦 Day job: C# RPA Developer @ ING — automation in a production banking environment
  • 🔥 Daily coding streak — I ship or learn something every single day
  • 🌱 Currently leveling up: ML engineering workflows, data modeling, and cloud data platforms

🛠️ Tech Stack

Languages Python SQL C# VBA

Data & ML Polars DuckDB Prefect PyTorch YOLOv8 OpenCV scikit-learn Streamlit

Automation & Cloud Power Automate Azure Docker Git

📌 Featured Projects

🚦 JustCV — Urban Traffic Monitor Real-time traffic monitoring system built on YOLOv8. Detects and counts vehicles, pedestrians, and cyclists from video, with a Gradio web UI and a live demo on Hugging Face Spaces. Hits ~60 FPS at 1080p on an RTX 3060. Python · YOLOv8 · OpenCV · PyTorch/CUDA · Gradio → Try the live demo

📈 Market Data Pipeline ETL pipeline that fetches daily stock market data from the Alpha Vantage API, transforms it with Polars, and stores it in DuckDB — all orchestrated with Prefect and built to run on a daily schedule. Python · Prefect · Polars · DuckDB · httpx

🏥 NFZ Healthcare Data Engineering End-to-end data engineering project on public Polish healthcare datasets. Built five analytical tables, including hospital geocoding via the Google Maps API, ICD-10 diagnosis data, drug treatment records, and a drug registry parsed from raw URPL data. Python · Polars · DuckDB · Streamlit

🚗 DCM — Data Catalog for Motorization Analytical dashboard and data pipeline for Polish vehicle registration data from the CEPIK registry, covering over two decades (2000–2026) of passenger car registrations. Includes a data-quality pipeline (brand normalization, anomaly handling), regional drill-downs down to powiat level, and dedicated EV/hybrid fuel-trend analytics. Python · Polars · Streamlit · CEPIK API

📊 GitHub Stats

GitHub profile summary

Repos per language Most used languages

Stats Productive time

Coding streak

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  1. MachineReddit MachineReddit Public

    Unsupervised topic modeling on a corpus of Reddit comments from May 2015. The project implements a pipeline based on sentence embeddings, dimensionality reduction, and density-based clustering, aim…

    Python

  2. JustCV JustCV Public

    Real-time urban traffic monitoring system using YOLOv8. Detects and counts people, vehicles, and bicycles from live camera streams with GPU-accelerated processing.

    Python

  3. DEA DEA Public

    An analytical database built on public Polish healthcare data (NFZ, GOV, e-Zdrowie, Ministry of Health).

    Python

  4. market-data-pipeline market-data-pipeline Public

    ETL pipeline for fetching, processing and storing daily stock market data using Prefect, Polars and DuckDB

    Python

  5. DCM DCM Public

    A comprehensive analysis of vehicle registration data in Poland based on the CEPIK API.

    Python