Yaoyuan Guo
IOS Software Engineer at Youku
Chaoyang District, Beijing, China
Summary
🤩
Rockstar🎓
Top School
Top expert iniOS Development and SwiftUI
Yaoyuan Guo is a seasoned iOS software engineer with 13 years of experience building high-performance mobile clients and open-source frameworks. Based in Beijing and currently at Youku, he focuses on live interactive iOS clients and has deep expertise in text rendering, image processing, caching, and model serialization. A prolific contributor to the widely used ibireme projects (YYModel, YYText, YYImage, YYCache, YYWebImage and others), he’s known for performance optimizations, memory-management fixes, Swift interoperability, and adding robust unit tests. His background includes server-side Java work at Renren, giving him cross-stack perspective that informs practical client–server integrations. He combines meticulous bug fixes and API compatibility work with measurable performance wins—sometimes in native C components like yyjson—showing fluency from Objective-C/Swift up to low-level optimization. Trained in software engineering at Harbin Engineering University, he pairs academic foundations with a long track record of shipping reliable, high-performance iOS libraries and apps.
13 years of coding experience
2 years of employment as a software developer
Bachelor of Science (B.S.), Software Engineering, Bachelor of Science (B.S.), Software Engineering at Harbin Engineering University
Chinese, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (40)
unit-testing10
json10
deco10
caching10
objective-c10
debug10
ios10
multithreading10
image-processing10
ui-components10
foundation10
data-modeling10
memory-management10
data-serialization10
c1110
Programming languages (5)
Github contributions (5)
ibireme/YYCategories
Oct 2015 - Aug 2017
A set of useful categories for Foundation and UIKit.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:68 commits, 4 PRs, 59 pushes in 1 year 9 months
Contributions summary:Yaoyuan primarily focused on enhancing the `yycategories` library, which provides useful categories for Foundation and UIKit in Objective-C. Their contributions involved adding new functionalities to the library, such as image rounding with border color, and fixing potential errors related to leap year calculations. Moreover, the user corrected spelling mistakes in the documentation and fixed build warnings, demonstrating a commitment to code quality and maintainability. They also worked on Swift API compatibility.
cocoapodssdwebimagefoundationuikitui-components
ibireme/YYCache
Oct 2015 - Aug 2017
High performance cache framework for iOS.
Role in this project:Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:4 releases, 65 commits, 7 PRs in 1 year 9 months
Contributions summary:Yaoyuan primarily contributed to the iOS cache framework, addressing various aspects such as bug fixes, code improvements, and Swift API compatibility. They updated comments, improved code clarity, and addressed issues related to memory management and threading. Additionally, the user optimized disk cache operations and improved compatibility with the existing codebase, specifically for Swift, indicating a focus on the overall performance and usability of the caching system.
lrucachingperformanceswiftios
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