Jacek Janur
Mobile Developer
"Zanshin - total awareness. Present during the work, and after." - Takuan Sōhō
I'm a mobile developer who cares about the bigger picture. My approach is shaped by zanshin - staying focused not just while building, but after. Code I can stand behind tomorrow, next month, next year.
Over 4+ years I've learned that good software comes from understanding what happens after you ship. Whether it's an app with thousands of users or an MVP testing a fresh idea - I care about how it performs in the real world, and how it adapts to change.
A mobile city-game I co-founded - turns exploring local landmarks into interactive challenges. From concept to launch: UI/UX design, Flutter app, Django backend, and the real work of listening to users.
Building native Android apps and maintaining React Native codebases. Working directly with clients - from Bluetooth integration to bug tracking, start to finish.
Co-founded Trawell. Designed the UI/UX, built the backend API, and learned that listening to users matters as much as writing good code. 1,800+ downloads, 4.6/5 rating.
Mobile and desktop apps in Flutter. Payment systems, booking features, rapid MVP development - seeing different approaches work (and fail) in the real world.