Building clean, high-impact digital experiences that tell a story.
Based in San Francisco, available worldwide.
I'm Doris (Ying Ying) Cheng. A designer and developer who loves to discover the perfect harmony of color and space that makes a digital product feel alive.
I specialize in building web applications using the modern stack to let the core message shine.
I'm obsessed with the way humans interact with digital spaces.
Players draw on their phones and guess on the TV. Built the 50ms stroke-batching pipeline that cut sync backlog 80–95% on Fire OS, and shipped subscription gating and server-side scoring.
Emoji reels spin on the TV and players race to type the answer on their phones. Built the real-time game room, server-side scoring, and subscription gating, and automated the Fire OS release pipeline.
Snap a photo of your meal and Gemini Vision estimates protein, fat, and carbs automatically. Includes a calorie-ring dashboard, macro goal setting, and a calendar view of your eating history.
A Windows 98-style universe with a multilingual GPT chatbot, a spinning low-poly 3D hero built in React Three Fiber, a playable Snake game with 8-bit sound, and a built-in music player.
Full-stack interview coach that generates role-specific questions and AI-guided feedback with Gemini. Dockerized MERN stack, deployed on an IBM LinuxONE VM.
Take the 16-type MBTI test with per-dimension scoring, then revisit past results in a personal dashboard. Features JWT authentication and MySQL-backed result history.