I'm Serhii Cherneha, a developer from Ukraine.
My focus is on making technology clear, accessible, and genuinely useful through simple tools and thoughtful solutions.
"CSS will change the world!"
— A personal belief that even the simplest tools can make a real difference.
I am currently a 1st-year student at Vinnytsia National Technical University (VNTU), pursuing a degree in Automation, Computer-Integrated Technologies, and Robotics.
I've been actively contributing to open-source projects since 2020, with focus on PHP development, Telegram bots, and Minecraft: Bedrock Edition tooling.
Active involvement in the Minecraft: Bedrock community through NewLand Games server development and XAuth Ecosystem — an authentication system for Minecraft servers.
I'm working on various open-source tools and systems:
- medcore-ua/medcore — three-tier web system for clinic automation built from scratch with PHP, Twig, and MySQL, covering patient scheduling, electronic medical records, resource management, and reporting
- battery-php-ext — PHP extension for battery monitoring and power management
- Fyennyi/alerts-in-ua-php — PHP library for real-time air raid alerts in Ukraine with PSR-16 caching and async support
- Fyennyi/async-cache-php — asynchronous caching library for PHP
- netbsd-wii-monitor-bot — Telegram bot monitoring a website hosted on Nintendo Wii running NetBSD
- j3-server-setup — setup guide for development on Android 5-6 with TermOnePlus, including manual Ngrok installation for armv7l and zsh with PowerLevel10k
- XAuth — authentication and authorization system for Minecraft: Bedrock Edition servers
- BindingManager — PocketMine-MP plugin for binding player accounts to Telegram
- table-magic — PHP library for creating and manipulating console tables
- machinima-bot — Telegram chatbot supporting Ukrainian machinima creator community
- Building tools that solve real problems with minimal complexity
- Developing reusable PHP libraries with clean APIs
- PHP, JavaScript, C, C++ programming languages
- Repurposing unconventional hardware for practical development tasks
- Familiar with popular tools such as SQLite, Telegram Bot API, and Git
You can reach me at serhii.cherneha@cssm.pp.ua or via Telegram @ChernegaSergiy.

