Andrei-Robert Popa

My Master's dissertation project, an educational app that teaches real Lua syntax to 10 to 14 year olds by having every instruction move a rover on a grid instead of printing to a console. The interesting part is lua_native, a package I built to bind the official Lua 5.5 C engine into Dart through FFI on native platforms and WebAssembly in the browser, including a setjmp/longjmp based guard so a Lua panic can't crash the host app. The Flutter client records every step as a frame so a run can be replayed and scrubbed without re-executing the script, and an ASP.NET Core backend handles accounts and multilingual lesson content.

My CS Bachelor's thesis project, built with ASP.NET Core and Flutter. The backend uses Clean Architecture with a runtime plugin system: new business logic ships as a DLL loaded at startup, so the core server never needs to change. The Flutter client caches menus and images locally to keep server requests light. The most interesting piece is SQL temporal tables: every menu version is preserved, so an order placed against an older menu always resolves to the right prices and items. A statistics dashboard covers the manager-facing side.

A Flutter app based on an older C++ project. It models the Romanian dictionary as a directed multigraph: nodes are two-letter prefixes and suffixes, edges are the words connecting them. Graph traversal finds dead-end nodes (out-degree zero) so the app can show which words leave an opponent stuck. The main challenge was loading the full word graph efficiently at startup and keeping lookups fast enough to run as the user types. The app is live on the Google Play Store.

A Flutter rebuild of the classic Cangurul Executant, a Romanian educational app written decades ago that is still referenced in schools and textbooks. The app lets students step through simple programs one instruction at a time, with an animated kangaroo showing what each command does. The idea is to make execution visible before students have to deal with real code syntax. The original is still used in classrooms and I hope the new version makes it easier to pick up, while keeping the core educational idea intact.