Yiyi Wang is a Staff Data Scientist in the Greater Seattle area with 13 years of experience translating complex data into product impact across advertising, personalization, and conversational AI. She has led cross-functional initiatives at Nextdoor, Twitter, and Amazon—launching evaluation frameworks that accelerated experimentation, driving candidate-generation signal strategies that added hundreds of thousands of mDAU, and building automated dialogue-evaluation models deployed to multiple languages. Comfortable owning end-to-end solutions, she blends statistical rigor from a PhD in Statistics with hands-on engineering, contributing front-end and full-stack code to notable open-source projects like a popular VS Code Markdown preview and documentation tooling for the K framework. Her work consistently focuses on practical automation that reduces human labeling effort and speeds decision-making, with published research and conference acceptances to show the methodological depth. Colleagues rely on her to set vision, prioritize signals, and align data science roadmaps with product and engineering partners. She pairs a research mindset with UI/UX sensibility—often improving documentation and developer-facing tooling as part of her engineering contributions.
13 years of coding experience
10 years of employment as a software developer
Bachelor of Science (B.S.), Applied Mathematics, Bachelor of Science (B.S.), Applied Mathematics at Shanghai University of Finance and Economics
Doctor of Philosophy (Ph.D.), Statistics, Doctor of Philosophy (Ph.D.), Statistics at Texas A&M University
Contributions:24 reviews, 431 commits, 316 PRs in 5 years 7 months
Contributions summary:Yiyi appears to have made contributions focused on the front-end implementation of the markdown tool, "crossnote," based on the commit messages and code changes. Their work primarily involves the integration of external dependencies like `crypto-js` and the implementation of the `vue.js` theme. The user has added support for features such as an image helper and has addressed code block styling bugs.
One of the "BEST" markdown preview extensions for Visual Studio Code
Role in this project:
Front-end Developer
Contributions:50 releases, 5 reviews, 358 commits in 5 years 8 months
Contributions summary:Yiyi contributed to the development of the Markdown preview extension for VS Code. They implemented core features related to the user interface and interaction, with a focus on the handling of embedded HTML5 elements. The user also made changes to the toolbar, including the addition of a refresh button and refactoring of existing components.
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