About Me

Tymoteusz Kołodziejczyk

Hello There! My name is Tymoteusz Kołodziejczyk, and I am a Software Developer. I enjoy building creative projects that benefit myself and those around me. Through this website, I aim to share my knowledge and experiences with others who are interested in learning programming and related topics. I’m also interested in electronics and photography (check out my photo gallery).

Check out my programming portfolio projects.

Experience
Dec 2025 - Present
Software Developer
SelfMaker
  • Contributed to the development of schowki.com, a self-storage platform, implementing, among others, SMS verification and integration with Poland’s KSeF e-invoicing system to ensure compliant electronic invoicing (C#/.NET, React).
  • Participated in improving CryptoMind, a mobile application focused on cryptocurrency market tracking (React Native).
  • Developed many smaller services and tools:
    • An Instagram chatbot using Gemini AI capable of managing multiple accounts simultaneously with account-separate knowledge bases (Python, SQLite3, Redis).
    • A device monitoring service that detects long disconnections in internal systems and sends automated email alerts to maintenance teams (Python).
    • An automated trading bot for the BNB Chain executing token trades based on predefined market conditions (Python).
    • An investor management panel for portfolio tracking and operations (React, Python FastAPI).
Education
2023 - 2028
"Technikum Mechatroniczne nr 1" in Warsaw
Programming technician
Technologies & Tools
Back-end
Databases
Front-end
Mobile development
IoT
Tools
Languages
Native
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Advanced
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Intermediate
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