Chase Ji
Data Scientist
Beijing, China
Summary
👤
Senior🎓
Top SchoolChase Ji is a data scientist based in Beijing with 11 years of experience applying statistical and machine learning techniques to large-scale, real-world problems. With an MS in Financial/Applied Mathematics from Johns Hopkins and a BS in Mathematics and Economics from UVA, he has built end-to-end predictive systems—from petabyte-scale preprocessing and feature engineering to model validation and deployment—across domains like insurance fraud detection and credit risk. At Distilled Identity he engineered time-series feature extraction and spatial-temporal aggregations across billions of records, and at DiDi focused on anti-fraud systems before joining Kuaishou to work on product-scale ML. He favors Python-driven, reproducible codebases and practical approaches (XGBoost, SMOTE, Spark, TSFresh) that deliver measurable business impact, including substantial cost savings in fraud investigations. Known for digging into the data-generating process, he combines rigorous quantitative training with hands-on engineering to turn messy data into actionable models.
11 years of coding experience
2 years of employment as a software developer
Master of Science - MS, Financial Mathematics, 3.6/4.0, Master of Science - MS, Financial Mathematics, 3.6/4.0 at Johns Hopkins Whiting School of EngineeringBachelor of Science - BS, Mathematics, Economics. Minor in Statistics., Bachelor of Science - BS, Mathematics, Economics. Minor in Statistics. at University of Virginia
Github Skills (30)
search-engine10
opensearch10
translation10
java10
restful10
elasticsearch10
analyzer9
javascript9
ios9
elasticsearch-plugin9
vue9
android9
ai9
dictionary9
elasticsearch-client9
Programming languages (3)
Github contributions (5)
rpgmakervx/xbuffer
Oct 2018 - Nov 2018
Contributions:32 commits, 32 pushes, 1 branch in 1 month
rpgmakervx/elasticsearch-reference-translation
Mar 2018 - Apr 2018
Contributions:51 commits, 43 pushes, 1 branch in 1 month
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.