Yu Sun
Software Engineer at DoorDash
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolYu Sun is a software engineer specializing in machine learning and search relevance, currently building recommendation and ranking systems at DoorDash in San Francisco. With a PhD from the University of Melbourne and 11 years of industry experience, he previously led search quality efforts at Twitter and developed contextual recommendation features for Cortana at Microsoft. His work bridges academic research—spanning contextual recommendation, spatiotemporal data management, and dialog systems—with production-scale engineering of real-time search and recommendation pipelines. He has hands-on expertise in embedding generation, trajectory mining, and collaborative nowcasting techniques that predict real-time user intent. Known for turning research insights into scalable products, he combines deep algorithmic thinking with pragmatic system design across large-scale, latency-sensitive environments.
11 years of coding experience
7 years of employment as a software developer
Bachelor of Engineering (B.E.), Computer Science, Bachelor of Engineering (B.E.), Computer Science at Renmin University of ChinaThe University of Melbourne
English, ChineseGithub contributions (5)
aldrichsun/FuelPriceShare
Feb 2015 - Jul 2016
Contributions:31 commits, 4 pushes, 1 branch in 1 year 5 months
aldrichsun/Graph-Partitioning-with-Natural-Cuts
Jul 2016 - Jul 2016
Contributions:9 pushes, 1 branch in 1 day
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