Timothy Chien
Software Engineer at Apple
San Francisco Bay Area United States
Summary
🤩
Rockstar🎓
Top School
Top expert inWeb and Mobile Security Technologies
Timothy Chien is a software engineer with 17 years of experience specializing in browsers, JavaScript, and web front-end performance, currently based in the San Francisco Bay Area and working at Apple. He has a strong track record at Mozilla—rising from front-end engineer to engineering manager and staff engineer—where he architected core Firefox OS UI systems and led teams through major platform transitions. A prolific open-source contributor and one of Taiwan’s most active JavaScript developers on GitHub, his projects include the popular wordcloud2.js visualization library and significant UI work for Gaia. Timothy combines deep hands-on implementation skills (Shadow DOM, ES6, canvas, mobile web) with proven technical leadership in distributed teams. He prefers email for professional contact and maintains a public portfolio and CV highlighting his blend of product-focused engineering and performance-first craftsmanship.
17 years of coding experience
8 years of employment as a software developer
B. Sc. Physics, B. Sc. Physics at National Central University
English, Chinese, taiwanese hokkien
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (11)
html10
css10
javascript10
user-interface10
canvas10
jquery9
user-experience9
ux-design9
web-components8
testing7
react3
Programming languages (21)
Github contributions (5)
timdream/wordcloud
Mar 2011 - Dec 2022
HTML5 Word Cloud
Role in this project:
Front-end Developer
Front-end DeveloperContributions:348 commits, 8 PRs, 44 pushes in 11 years 10 months
Contributions summary:Timothy primarily contributed to the front-end aspects of the project, focusing on the UI and user experience. Their commits include enhancements to the word cloud's functionality, such as adding event tracking, fixing typos, and modifying the visual appearance. Additionally, they were involved in testing by adding and updating unit tests.
word-cloudjavascripthtml5
timdream/wordcloud2.js
Mar 2011 - Nov 2022
Tag cloud/Wordle presentation on 2D canvas or HTML
Role in this project:Front-end Developer
Front-end DeveloperContributions:5 reviews, 202 commits, 52 PRs in 11 years 10 months
Contributions summary:Timothy primarily contributed to the development and testing of the wordcloud2.js library, focusing on its front-end functionalities. Their work involved adding and testing various features such as different shapes, rotation controls, and image masks. The user made code changes to improve the visual presentation and user experience of the word cloud, and made several iterations to enhance the library's quality and functionality.
wordcloud2presentation2d-canvascanvasjavascript
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