James Tang
Engineering at GoodNotes
Hong Kong, China
Summary
🤩
Rockstar🎓
Top School
Top expert iniOS Swift Development
James Tang is a seasoned mobile engineer with 14 years of experience specializing in iOS development, UI/UX-driven product work, and developer tooling. Based in Hong Kong, he currently contributes to GoodNotes v5 and Project Catalyst while also creating popular Sketch plugins through MagicSketch, blending design sensibility with engineering rigor. His open-source work includes major contributions to well-known Swift libraries such as Spring (declarative iOS animations) and several polished demos that showcase gesture-driven and adaptive UIs, reflecting a deep focus on animation, layout, and performance. Previously he led mobile teams and UX efforts at Innopage and InVision, accelerating release cycles by building reusable libraries and automation. He pairs product-facing craftsmanship—down to pixel-perfect UI and plugin ergonomics—with pragmatic engineering practices that improve developer experience.
15 years of coding experience
3 years of employment as a software developer
The Chinese University of Hong Kong (CUHK)
Stackoverflow
995reputation
81kreached
16answers
2questions
Github Skills (25)
objective-c10
ios10
animation10
ui-design10
implement10
uid10
gesture-recognition10
uitableview10
front-end-development10
uicollectionview10
swift10
uikit10
navigationbar9
navigationview9
interface-builder8
Programming languages (9)
Github contributions (5)
MengTo/DesignerNewsApp
Jan 2015 - Mar 2015
Build a Swift App as a designer
Role in this project:
Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:125 commits, 5 PRs, 11 pushes in 2 months
Contributions summary:James primarily contributed to the implementation of the iOS application, "DesignerNewsApp," focused on building a Swift app. Their work involved significant UI development, refactoring the loading process, and adapting code to use Spring.framework for animations. They updated delegate method naming conventions, adjusted the UI for different screen sizes and introduced support for in-app WebView. They also added inline image support within comments.
swift
jamztang/JTGestureBasedTableViewDemo
Feb 2012 - May 2014
(demo) Recreating the buttonless interaction pattern found in Clear for iPhone app
Role in this project:Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:65 commits in 2 years 4 months
Contributions summary:James primarily focused on developing a gesture-based table view demo for iOS. Their contributions included implementing a pinch-to-add cell feature, adding a panning gesture to delete cells, and improving the animation for reordering cells. The user also refactored code to use a custom gesture recognizer class for improved maintainability, and added different cell styles.
iphone-app
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