Shijie Cai
Data Scientist
Chaoyang District, Beijing, China
Summary
🤩
Rockstar🎓
Top SchoolShijie Cai is a data scientist with 11 years of experience applying statistical rigor to monetization problems at major Chinese tech firms, currently working at ByteDance. Trained in statistics at Penn State (BS) and Boston University (MS), he blends advanced analytics with product-focused experimentation to drive revenue insights. His recent roles at Kuaishou and Didi reflect deep hands-on experience in designing measurement frameworks and translating data into monetization strategies. Beyond analytics, he contributes to open-source Node.js tooling—improving TypeScript type safety in the popular thinkjs framework—which signals a strong practical appreciation for developer ergonomics and robust data pipelines. Colleagues describe him as someone who moves seamlessly between probabilistic modeling and production implementation, often surfacing subtle data quality issues that materially impact business metrics. Based in Chaoyang District, Beijing, he combines global academic training with local industry execution.
11 years of coding experience
4 years of employment as a software developer
Bachelor of Science - BS Statistics, Bachelor of Science - BS Statistics at Penn State UniversityMaster's degree Statistics, Master's degree Statistics at Boston University
Github Skills (9)
typescript10
js10
typescripts10
koa10
typescript-types10
vnext9
babel-core7
babeljs7
babel67
Programming languages (3)
Github contributions (5)
thinkjs/thinkjs
Aug 2017 - Oct 2018
Use full ES2015+ features to develop Node.js applications, Support TypeScript.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:27 commits, 1 PR, 20 pushes in 1 year 1 month
Contributions summary:Shijie contributed to the TypeScript definitions for the `thinkjs` framework, adding and modifying interfaces for core components like controllers, models, and services. They added support for features such as session management, validation, and extending the context object. The commits demonstrate a focus on improving the type safety and developer experience of the framework through detailed type declarations.
eslintjestnode-jsjavascriptnodejs
stcjs/stc-pack
Sep 2016 - Feb 2017
Contributions:12 commits, 21 pushes, 3 branches in 5 months
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