Xun Sun
Software Engineer at eBay
Pudong, Shanghai, China
Summary
🤩
Rockstar🎓
Top SchoolXun Sun is a software engineer with seven years of experience building high-throughput, user-facing systems, currently contributing at eBay from Pudong, Shanghai. He has hands-on experience designing and implementing dozens of APIs for large-scale payment services that supported millions of users and thousands of TPS during stress tests. Xun has optimized cost and performance—adding a new ID OCR method and using feature flags to cut OCR costs by 20%—and engineered Redis-backed APIs that handled 80k QPS for provincial marketing events. Comfortable across back-end services, Kafka data pipelines, and Vue.js frontends, he combines rigorous testing and release discipline with cross-team coordination. A University of Calgary MEng graduate, he brings a pragmatic, product-focused approach to solving scalability and reliability challenges.
8 years of coding experience
1 year of employment as a software developer
Bachelor of Engineering - BE, Information Engineering, 3.2/4.0, Bachelor of Engineering - BE, Information Engineering, 3.2/4.0 at Nanjing University of Aeronautics and AstronauticsMaster of Engineering - MEng, Electrical and Computer Engineering, 3.7/4.0, Master of Engineering - MEng, Electrical and Computer Engineering, 3.7/4.0 at University of Calgary
Github Skills (161)
icon-pack10
webview10
parser10
mobile-development10
rdma10
workspace10
typescript-definitions10
gesture10
notion10
native-module10
glm10
rust-language10
rust-lang10
markdown10
cheerio10
Programming languages (12)
Github contributions (5)
UNIDY2002/blog
Nov 2022 - Jun 2026
Contributions:1 review, 26 PRs, 75 pushes in 3 years 7 months
MyDBMS/MyDBMS
Nov 2021 - Jan 2022
Contributions:76 commits, 1 push, 1 branch in 2 months
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