CHENG EN LIU

Ported and shipped HTML5/native games from Construct, Godot, Unity, Phaser, Cocos2d-x, and EmScripts to React 19, TypeScript, and PixiJS; also served as the sole developer for multiple titles. Built a shared real-time multiplayer authoritative server using Node.js with a server-authoritative result flow, reusing architecture across multiple online modes. Integrated multi-tenant leaderboard services into dozens of games with anti-cheat session limits (calibrated via simulation bots), offline retry queues, and UAT/production detection; deployed on AWS Lambda with S3 and localized games into multiple languages. Ensured authoritative results and stability through load testing and production-ready deployment practices.

Ported 71 HTML5 and native games (Construct 2, Godot, Unity, Phaser, Cocos2d-x, and C/EmScript) to React 19, TypeScript, and PixiJS; sole developer for 64 of them. Built a shared real-time multiplayer server on Node.js using Colyseus (pnp/mmorpg mono repo) with server-authoritative results reused across 1v1 online modes. Integrated multi-tenant leaderboards into 30 games with anti-cheat session boundaries calibrated via simulation bots, plus offline retry queues and UAT/production detection. Deployed on AWS Lambda with S3 and localized games into four languages.

Led back-end development for a video advertising/monitoring system for the Institute for Information Industry III. Built Django REST framework APIs for projects, tasks, search, and reporting, with organization-level role-based access control and audit logging; hardened system launch with IP allow-listing, single-session login, and session timeouts. Implemented video processing (ffmpeg, moviepy), reporting exports (Excel/Word), resumable large-file uploads (TUS), and scheduled database backups. Deployed using Docker, Caddy, and Nginx via GitHub Actions CI/CD; independently built a Laravel Nova back office and a Vue 3 storefront; unblocked front-end colleagues to deliver on schedule.