About Me
Full-Stack Software Developer with 6 years of SDE experience building end-to-end web and mobile applications using SwiftUI, React, React Native, Node.js, Python, and FastAPI. Deep hands-on experience with AI/ML pipelines, RAG, and vector databases (PGVector, TF-IDF/SVD embeddings). Proven ability to architect mobile apps, cloud infrastructure, and CI/CD pipelines from end to end. Over the years, I have shipped production mobile and web apps at fast-paced startups across the US, Canada, and China, from pre-seed to IPO. Also 4 years of mobile game design experience from concept to App Store launches.
Vibe Coding Workflow
For planning, I currently get the best results from Claude Code + Opus. I use ChatGPT Codex primarily for implementation—strong at coding, less reliable than Opus or Gemini 3 for large-context planning. For cost-sensitive daily chores, Cursor Auto Mode is often sufficient. Please check my Playbook with Vibe coding.
Recent Experience
3D Full Stack Developer & Mobile Developer - Medico Supplies INC.
Mar 2025 - Present
- - Architected and built a health analytics backend using Python, FastAPI, Redis, and async task queues for long-session physiological data processing
- - Developed a React Native app with TypeScript and local persistence, including native Swift/Kotlin modules for BLE data parsing and sync
- - Delivered a Windows desktop 3D scanning application with C#/.NET and C++ interop, optimizing mesh pipelines for clinical-grade accuracy
Senior Frontend Developer - NinjaTech AI
Oct 2024 - Jan 2025
- - Contributed to MyNinja.ai Agentic App powered by fine-tuned Llama LLM across web and mobile — developed React.js features with RTK Query for CRUD, Tailwind CSS styling, and AI-generated image state management.
- - Developed React Native mobile app with TypeScript, Expo Router, Zod validation, implementing parallel mixed-content message streaming with Zustand (MVVM), achieving 60fps scrolling for Markdown citations and research cards.
Key Achievements
- 🎯 Founding React Native Developer - boosted a Canada-based ed-tech startup to release its first mobile app and supported its first private-equity fundraising round in early 2023
- 🎮 Game Design Lead - #1 Sports App in China on May 3, 2015, as founding mobile game designer guiding a startup from pre-seed funding to IPO
- 🥇 2x Hackathon Winner (CuHacking 2019 & 2020)
- 🏆 Carleton University Medal in Computer Science
Background
- 💻 6 years of SDE experience across web, mobile, and backend systems
- 🎯 Founding/Senior React Native Developer experience with tech startups across US, Canada and China
- 🎮 4 years in mobile game design from idea to App Store
- 📺 Live Coding Streamer on twitch.tv/zywkloo, streaming coding contests and gaming
- 💡 Passionate about building scalable applications and mentoring developers
Education
- 📖 Master of Data Science, UBC, Vancouver, Canada
- 🍁 B.Sc. in Computer Science, Carleton University, Ottawa, Canada
- 🏙️ B.Eng. in Urban Planning, Peking University, Beijing, China
- 🥇 Carleton University Medal in Computer Science, 2020 Fall
Technologies I Work With
Mobile
- SwiftUI
- React Native
- Firebase
- Core Data
Web
- React
- Node.js
- Express
- MongoDB
Desktop
- C#
- .NET Framework
- C++
- CMake
Tools
- Git
- Docker
- AWS
- CI/CD