Changyi L.

13-Year Unity Dev | 100 Job Success Score | AR/VR/Mobile/PC/Games

Hi, I'm Leo, a Top-Rated Plus Unity Developer with 13 years of experience. I've been a full-time freelancer on Upwork for over 9 years, maintaining 100% Job Success across 15,000+ hours. Clients rely on me for steady, responsive collaboration—I'm here every weekday, reply quickly, and keep projects moving. I take on both new builds and the work many developers shy away from: bringing legacy or broken Unity projects back to life. What I do best: • Gameplay Systems – Building puzzle mechanics, racing physics, casual games, VR/AR interactions, etc. • Integrations – Setting up ads, analytics, and platform tools (Meta Quest, SteamVR, VRChat, Map SDK). • Optimization – Profiling and fixing performance issues so everything runs smoothly on target devices. • Project Modernization & Rescue – Upgrading outdated Unity versions, fixing deprecated code, refactoring messy codebases, and porting old projects to modern platforms (WebGL, mobile, VR/AR). What clients say about working with me: "Didn't just follow instructions – added creative touches and smart improvements at every step." I focus on those extra details that make your project better. "Made everything easy and efficient... professionalism stood out." Clear communication and on-time delivery. "Always communicates... puts his heart into his work." Collaboration is smooth and straightforward. "Would hire again in a heartbeat." I aim to be your long-term partner. My specialties: • Fun games (Puzzles, Casual, Racing – Mobile / PC) • VR & AR experiences (Meta Quest apps and games) • Interactive tools and applications • Quick prototypes and test versions • Legacy project recovery, upgrades, and platform porting If you have an old Unity project that needs a steady hand, or a new idea you want built right the first time, let's talk. I'm ready to help bring it to life.