Cassidy Williams

Hi! I’m Cassidy, and I like to make memes and dreams and software.

I’m the Senior Director of Developer Advocacy at GitHub! Outside of that fancy title, I’m a startup advisor and investor, open source-er, and meme-maker on the internet. I enjoy building mechanical keyboards, playing music, hanging out with my family and friends, and teaching in my free time.

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Here's my most recent posts or read a random one!

KeyCon 2026 recap Jun 14, 2026
I spoke at KeyCon, a mechanical keyboard convention!
#events
Microsoft Build 2026 recap Jun 10, 2026
I spoke (a lot) at Microsoft Build in San Francisco!
#events #work
A simple clustering algorithm for lists May 24, 2026
I nerd-sniped myself deeply when sorting baby toys and came up with a fun pattern for doing so!
#technical #learning
La Pedra Go Club in Barcelona May 18, 2026
I visited a decades-old Go club in Barcelona!
#events
Shipping todometer, version 3! May 2, 2026
I updated my app todometer after several years of it lying dormant, and it's better than ever!
#technical #project

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Here's my most recent posts or read a random one! class s extends HTMLElement{constructor(){super();function n(t){return t=t.split(","),`/post/${t[Math.floor(Math.random()*t.length)]}`}const o=this.dataset.posts,e=this.querySelector("a");e.href=n(o)}}customElements.define("astro-link",s);

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Here's my most recent posts or read a random one!