Cassidy Williams
programmer from United States (Remote)
Cassidy Williams, known online as cassidoo, is an American programmer and podcaster. She is Senior Director of Developer Advocacy at GitHub, and she also works as a startup advisor and investor and contributes to open source software. She writes a newsletter and blog posts on technical topics, and in 2026 she spoke at the RenderATL conference in Atlanta. Her X account, 
cassidoo, had about 185,600 followers in December 2022.
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