Qicong Yin
Applications Engineer
Yokohama, Japan
Summary
👤
Senior🎓
Top SchoolQicong Yin (KC/Hirasato) is an applications engineer with 11 years of experience building scalable backend systems, mobile apps, and OS-level customizations, currently designing REST APIs at Rakuten that handle 10K+ QPS across Japan. Proficient in Java, Kotlin, JavaScript and Rust, he has moved trading systems from vendor products to low-latency in-house services at Barclays and implemented resilient backends and DevOps pipelines in diverse domains. His background as a Debian Developer and Google Summer of Code mentor reflects deep open-source experience integrating Android SDK tooling and porting builds to ARM, informing his pragmatic approach to legacy migration and private-cloud reliability challenges. Based in Yokohama, he combines systems-level curiosity—kernel and Android OS tweaks—with production-ready engineering that balances performance, interoperability across many internal clients, and incremental modernization.
11 years of coding experience
3 years of employment as a software developer
Computer Science and Communication Engineering, Computer Science and Communication Engineering at Providence UniversityBachelor’s Degree, Computer Science, Bachelor’s Degree, Computer Science at National Taichung University of Education
Chinese, English, Chinese, Japanese
Github Skills (200)
cargo10
windows10
javascript10
ecosystem10
linux10
editor10
golang10
electron10
groovy10
typescript10
vscode-extension10
java10
vscode10
gradle10
asynchronous10
Programming languages (13)
Github contributions (5)
seamlik/viska-java
Oct 2016 - Jan 2019
Contributions:176 commits, 52 pushes, 3 branches in 2 years 3 months
xmppclient-libraryandroidjava-sexmpp-client
seamlik/riko
Aug 2019 - Nov 2021
Sub-optimal language binding generator
Contributions:124 pushes, 1 branch in 2 years 3 months
binding-generatorcompilerprogramming-languageoptimalbinding
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