Hi, I'm Willy šŸ‘‹
Hi everyone ! My name is Chun Chieh (Willy) Chang å¼µē«£å‚‘, and Iā€™m from Taiwan šŸ‡¹šŸ‡¼.
CCC

About

Software engineer with experience building scalable web platforms and distributed systems. Skilled in full-stack development, cloud infrastructure, and real-time data pipelines. Proven ability to deliver production-grade solutions across startups, academia, and research. Passionate about improving performance, developer experience, and system reliability.

Work Experience

T

Tiktok

April 2025 - Present
Frontend Engineer (Privacy Product)
Incoming Frontend Engineer focusing on privacy product development.
K

Kocree

May 2024 - August 2024
Full Stack Developer Intern
Developed an AI-driven music platform, Muosaic, using Svelte, Nest.js, and PostgreSQL.
U

University of Illinois Urbana-Champaign

March 2024 - November 2024
Full Stack Developer
Developed an Here@UIUC serving over 5,000 students across 30+ courses. Refactored the backend into a modular MVC architecture using Express.js and converted the codebase to TypeScript, improving maintainability, unit testing, and type safety. Achieved 95% test coverage using Jest.

Education

U

University of Illinois Urbana-Champaign

2022 - 2024
Master of Computer Science
F

Fu Jen Catholic University

2015 - 2019
Bachelor of Science in Computer Science

Skills

Typescript
Swift
Python
Node.js
React
Next.js
Svelte
Express
NestJS
Flask
MySQL
Postgres
MongoDB
Neo4j
Docker
Kubernetes
AWS
Linux
Github Actions
My Projects

Check out my latest work

I've worked on a variety of projects, from web application to complex distributed system. Here are a few of my favorites.

AR Navigation APP

AR Navigation APP

Unity
ARKit
Mapbox
Resume
LinkedIn