Chaoxu Tong
Quantitative Researcher
Miami, Florida, United States
Summary
👤
Senior🎓
Top SchoolChaoxu Tong is a quantitative researcher with 14 years of experience building scalable, production-grade systems for high-frequency trading and marketplace matching. Currently at Citadel Securities, he applies a Ph.D. in Operations Research from Cornell to design algorithmic, data-driven solutions that prioritize reliability and debuggability. Previously he led matching and predictive-signal efforts at Uber and improved GPS-based matching precision as a data scientist, blending ML, optimization, and systems engineering. His background includes applied research in vehicle routing and ad pricing from internships at eBay and Facebook, showing an aptitude for turning academic methods into cost-sensitive, real-world simulators. An algo-competition enthusiast and Japanese culture aficionado, he brings both competitive problem-solving and a creative mindset to complex engineering challenges. Based in Miami, he excels at bridging quantitative research and software engineering to deliver practical, high-performance solutions.
14 years of coding experience
5 years of employment as a software developer
Bachelor's Degree, Mathematics, Bachelor's Degree, Mathematics at University of Science and Technology of ChinaDoctor of Philosophy (Ph.D.), Operation Researches and Information Enginnering, Doctor of Philosophy (Ph.D.), Operation Researches and Information Enginnering at Cornell University
English, Chinese, Japanese
Github Skills (43)
vehicle-routing-problem10
combinatorial-optimization10
operations-research10
gurobi10
simulated-annealing10
constraint-programming10
linear-programming10
optimization10
r8
grammar7
flask-api6
dplyr6
parser6
solver6
coin-or6
Programming languages (3)
Github contributions (5)
tongcx/topcoder-cpp
May 2013 - Mar 2015
Contributions:81 commits, 16 pushes in 1 year 10 months
tongcx/topcoder-java
Jan 2016 - Jun 2018
Contributions:11 pushes, 1 branch in 2 years 5 months
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