Yansong Li
IOS Developer at TikTok
Waterloo, Ontario, Canada
Summary
🤩
Rockstar🎓
Top SchoolYansong Li is an experienced iOS developer with 11 years building native apps and a track record of publishing seven apps to the App Store. Currently at TikTok in Waterloo, he brings production-hardened mobile engineering from startups to scale, having previously shipped high‑usage consumer apps and features for companies like Ritual and Fairfax’s Stuff. He pairs deep UIKit expertise—reworking collection view layouts and diffing strategies on open-source CollectionKit—with practical performance work such as GCD concurrency, Core Graphics, and media-rich components. With a Master’s in Software Engineering from the University of Waterloo and an undergraduate background in integrated circuit design, he blends systems thinking with polished UX implementation. He’s also an advocate for applying machine learning ideas in mobile contexts, often surfacing in his GitHub contributions to layout and performance optimizations.
11 years of coding experience
4 years of employment as a software developer
Bachelor's Degree, Integrated Circuit Design, Bachelor's Degree, Integrated Circuit Design at Shandong UniversityMaster of Engineering (M.Eng.), Computer Software Engineering, Master of Engineering (M.Eng.), Computer Software Engineering at University of Waterloo
Chinese, English
Github Skills (4)
swift10
uicollectionview10
ios10
difference9
Programming languages (3)
Github contributions (5)
SoySauceLab/CollectionKit
Aug 2017 - Feb 2018
Reimagining UICollectionView
Role in this project:
Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:20 commits, 21 PRs, 21 pushes in 6 months
Contributions summary:Yansong primarily focused on refactoring and enhancing the `CollectionView` component within the `CollectionKit` framework. They implemented features such as the use of diffing algorithms to optimize updates and changed the internal data structure to use arrays. The contributions also include the implementation of an Article example with a dedicated view controller, demonstrating practical usage of the `CollectionKit`. These changes indicate a focus on improving the layout management and user experience within the iOS framework.
uicollectionviewiosswiftuicollectionviewlayoutcollectionkit
jindulys/ChainPageCollectionView
Jul 2017 - Feb 2018
A custom View with fancy collectionView animation
Contributions:62 commits, 57 pushes, 1 branch in 7 months
animationcollectionviewcustom-viewswiftcollectionviewlayout
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