Simon Tong
Principal Engineer at Google
Mountain View, California, United States
Summary
👤
Senior🎓
Top SchoolSimon Tong is a Principal Engineer with over two decades of engineering impact at Google, specializing in large-scale machine learning and information retrieval systems that power web search and ad targeting. He co-designed Google's first widely used ML system and multiple revenue-driving systems, architecting solutions that analyze billions to trillions of data points. A core contributor to search ranking with 76 granted US patents (and about ten pending), he combines deep research training—a Ph.D. in Machine Learning from Stanford—with pragmatic product focus. Simon’s work repeatedly moved state-of-the-art techniques into production, improving core business metrics by several percent at scale. Based in Mountain View, he brings rare expertise at the intersection of ML research, systems engineering, and applied economics of search and ads. Notably, his career blends foundational academic rigor with prolific patented innovation that quietly shapes everyday search experiences.
11 years of coding experience
B.A., Mathematics and Computation, B.A., Mathematics and Computation at University of OxfordPh.D., Machine Learning, Computer Science, Ph.D., Machine Learning, Computer Science at Stanford University
Github Skills (200)
firefox-addon10
architecture10
browser10
git-status10
react-bootstrap10
lag10
letter10
gnome10
reactstrap10
server10
javascript9
linux9
http-request9
firefox9
browser-detection9
Programming languages (13)
Github contributions (5)
simontong/pocketsync
Feb 2019 - Jul 2019
Synchronize bank transactions between various providers
Contributions:1 release, 19 commits, 15 pushes in 4 months
revolutsyncbank-transactionsprovidersbanking
simontong/secretnamibia_v2
Apr 2023 - Jul 2023
Contributions:50 pushes, 2 branches in 3 months
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