I am looking for an experienced HTML5 / JavaScript developer to build the core system for an educational mini-games platform aimed at primary school students. The project is based on a single core game engine that loads multiple HTML5 mini games dynamically. All games share the same layout, lifecycle, asset loader, UI components, feedback system, and navigation. New games must be addable simply by creating a new folder with a game.js and game.json file. The platform includes: A shared Header / Game Frame / Footer layout Player profile display (avatar, name, level) Home screen with Games, Leaderboard, and Settings Global and per-game leaderboards (WordPress backend integration) A centralized asset loader with loading screen and progress bar Portrait-first, fully responsive design for mobile, tablet, and desktop One example mini game implemented using the core system (matching game) The goal is to keep the system simple, clean, scalable, and performant, without heavy frameworks or over-engineering. Full technical requirements, architecture, UI behavior, and game template details are provided in the attached documentation. If this initial task is completed successfully, there will be 20–30 additional game templates and long-term collaboration opportunities. Budget: 250$