Cooltey Feng
Senior Software Engineer at Wikimedia Foundation
Folsom, California, United States
Summary
🤩
Rockstar🎓
Top SchoolCooltey Feng is a Senior Software Engineer with 12 years of professional experience and a long history of shipping full-stack and mobile products, currently contributing to the official Wikipedia Android app at Wikimedia Foundation. He brings deep hands-on expertise across Android (camera, BLE, streaming, Kotlin migrations), web stacks (JavaScript, PHP, Java), and server environments on Linux, AWS, and Azure, plus practical ML and big-data familiarity. As founder of Cooltey.org since 2000, he has scaled a community-driven site to high traffic using PHP/MySQL and progressive web techniques, demonstrating entrepreneurial product sense alongside engineering craft. His open-source contributions include improving UI architecture and Kotlin conversions in the widely used wikimedia/apps-android-wikipedia repo, helping stability and performance for millions of users. A fast learner and team player with advanced degrees and a strong academic record, he blends legacy system knowledge with modern mobile engineering practices.
11 years of coding experience
7 years of employment as a software developer
Master’s Degree, Computer Science, 3.91, Master’s Degree, Computer Science, 3.91 at Northwestern Polytechnic UniversitySoftware Engineering, Major, 3.8, Software Engineering, Major, 3.8 at Tamkang UniversitySoftware Engineering, Major, Software Engineering, Major at CSU Sacramento
English, Chinese
Stackoverflow
21reputation
2kreached
3answers
1question
Github Skills (13)
kotlin10
uid10
android-ui10
front-end-development10
ui-design10
android10
debugging6
android-webview6
foreach6
php6
macos6
loops6
chromebook6
Programming languages (7)
Github contributions (5)
wikimedia/apps-android-wikipedia
Aug 2017 - Jan 2023
📱The official Wikipedia app for Android!
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:1196 reviews, 3846 commits, 3246 PRs in 5 years 6 months
Contributions summary:Cooltey contributed to the Android Wikipedia app by converting various UI components to Kotlin, including SearchEmptyView and PageScrollerView. Their contributions involved the implementation of new UI elements, and the refactoring of existing components, along with improving the architecture to improve the performance and functionality of the application. Additionally, the user updated the code base by merging new code into the existing base code, improving the stability of the app. They also fixed the functionality of the app by updating different settings.
commonswikipedia-androidwikimediamediawiki-apiandroid
cooltey/Cooltey.org
Feb 2017 - Jun 2024
Contributions:10 pushes, 1 branch in 7 years 5 months
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