Chong Sun
Senior Machine Learning Scientist at Chewy
Seattle, Washington, United States
Summary
👤
Senior🎓
Top SchoolChong Sun is a Senior Machine Learning Scientist in Seattle with a PhD in Computational Mathematics and eight years of experience building production ML systems across supply chain, NLP, and policy analytics. He led multi-disciplinary teams at Amazon to deliver high-impact projects—one PO-rejection model produced $350M in US savings—and now applies ML to Chewy’s supply chain. Comfortable with messy, terabyte-scale data, Chong programs end-to-end pipelines using Spark, Redshift, AWS, and Python, and has published novel calibration methods for tree-based and deep models. His background blends rigorous numerical PDE research and Bayesian methods with practical A/B testing and marketing certification, a combination that helps him translate complex models into measurable business outcomes. He also brings financial analytics experience (CFA Level I passed) and a track record of mentoring junior scientists and securing NSF funding for interdisciplinary research.
8 years of coding experience
10 years of employment as a software developer
Master's degree, Business and Finance, 3.9/4.0, Master's degree, Business and Finance, 3.9/4.0 at Baylor UniversityBachelor of Arts (B.A.), Japanese Language, 3.60/4.00, Bachelor of Arts (B.A.), Japanese Language, 3.60/4.00 at 国际关系学院
Korean, Japanese, Chinese, English
Github Skills (10)
transform1
erc201
etl1
erc7211
python1
web3py1
twitter1
python-scripts1
ethereum1
ether1
Github contributions (5)
Csun1992/SVM-stock-return-prediction
Nov 2018 - Feb 2019
Contributions:102 commits, 64 pushes in 3 months
Csun1992/Decision-Tree-Stock-Prediction
Dec 2018 - Dec 2018
Contributions:15 commits, 7 pushes, 1 branch in 9 days
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