Cassidy Williams
Senior Director Of Developer Advocacy at Cosynd, Inc.
Chicago, Illinois, United States
Summary
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Rockstar🎓
Top SchoolCassidy Williams is a Senior Director of Developer Advocacy and seasoned software engineer with 12 years of experience building developer experience, education, and product teams across startups and major platforms. She blends hands-on front-end engineering—demonstrated by React-based open source work like interactive tutorials and a React/Electron todometer—with leadership roles at GitHub, Netlify, and CodePen. As a founder and CPO of Cosynd and an advisor to multiple developer-focused startups, she pairs product strategy with pragmatic developer tooling guidance. A prolific speaker and community builder, Cassidy has presented at TEDx, SXSW, the United Nations, and Grace Hopper, and ran a popular weekly newsletter that mixes tech, career advice, and humor. She’s known for turning complex developer problems into accessible resources and workshops, and for quietly driving impact through curriculum, events, and API-driven advocacy. Based in Chicago, she also moonlights making memes and music, reflecting a playful creative streak that informs her approach to developer culture.
12 years of coding experience
11 years of employment as a software developer
Minor Spanish, Minor Spanish at Universidad de ExtremaduraBachelor of Science (B.S.) Computer Science, Bachelor of Science (B.S.) Computer Science at Iowa State University
Spanish, English
Stackoverflow
3,358reputation
364kreached
50answers
72questions
javascript
top-5%
immutability
top-5%
json
top-5%
Github Skills (24)
site-design10
javascript10
electron10
css10
ui-design10
uid10
front-end-development10
html10
website-design10
react10
jsx10
json9
immutability9
lessc9
utility8
Programming languages (21)
Github contributions (5)
cassidoo/HTML-CSS-Tutorial
Jul 2013 - Dec 2022
Tutorial for HTML and CSS
Role in this project:
Front-end Developer
Front-end DeveloperContributions:3 reviews, 79 commits, 21 PRs in 9 years 6 months
Contributions summary:Cassidy primarily focused on creating the front-end structure for an HTML and CSS tutorial. They added basic HTML files, including structure and content such as headings, paragraphs, lists, and images. The user also implemented links and tables. Furthermore, they worked on the introduction of CSS concepts and implemented basic styling using the style tag.
cssjavascript
cassidoo/todometer
Jan 2017 - Jan 2023
A meter-based to-do list
Role in this project:Front-end Developer
Front-end DeveloperContributions:4 releases, 4 reviews, 134 commits in 6 years
Contributions summary:Cassidy's commits primarily focused on developing the front-end of the to-do list application. They initiated the project's front-end scaffolding using Electron, HTML, and JavaScript, and subsequently implemented core UI components using React. The user's contributions also included styling with Less and CSS, and integrating a progress bar feature using React-progressbar. The user successfully refactored and enhanced the UI with animations and keyboard navigation.
reactto-do-appmeterelectronproductivity
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