Hi there! 👋 I'm a software developer who has been writing code professionally for over 5 years, mostly building mobile apps for iOS and Android in React Native and TypeScript. I enjoy the whole process: planning the architecture, writing the app and the Node.js backend behind it, setting up CI/CD and getting it through App Store and Google Play review. Above all, I care about apps that stay fast and reliable, even on low-end devices.

Outside of client work, I build my own apps and open-source tools. The biggest one is Where Am I?, a multiplayer geography game I designed, built and published on my own. I also maintain AsoBeast, an App Store Optimization tracker, and a fully typed Google Play scraper for Node.js.

• 📱 5+ years of software development, focused on mobile apps in React Native
• 🚀 From architecture to App Store and Google Play releases, with CI/CD and automated tests
• ⚡ Performance tuning for low-end devices (cut one screen's render time from 10s to 1s)
• 🧩 Node.js and NestJS backends: REST, GraphQL and WebSockets
• 📦 Open-source author with 23k+ npm downloads a month
• 🌍 Based in Poland, working remotely

Mobile

Web and backend

Testing, release and cloud

Project	What it is
google-play-scraper	Fully typed Node.js library and CLI for Google Play data
AsoBeast	Open-source App Store Optimization (ASO) tool and keyword rank tracker (NestJS, Next.js, PostgreSQL, Redis)
Where Am I?	Multiplayer geography game for iOS and Android with real-time modes over WebSockets, maps, push notifications and in-app purchases