Cassidy
@cassidoo.co
Making memes, dreams, & software!
Sr. Director of Dev Advocacy at GitHub. Married to a dweeb and mom to a nerdy toddler + baby combo. She/Her ✝️ CHI 🏠
Subscribe to my newsletter!
cassidoo.co/newsletter
Sr. Director of Dev Advocacy at GitHub. Married to a dweeb and mom to a nerdy toddler + baby combo. She/Her ✝️ CHI 🏠
Subscribe to my newsletter!
cassidoo.co/newsletter
Pinned
Cassidy
@cassidoo.co
· Nov 4
Cassidy Williams
I'm Cassidy Williams, a software engineer, mom, and overall nerd in Chicago. I write about tech, projects, and whatever else I'm thinking about!
cassidoo.co
Hey new friends!
I'm Cassidy, based in Chicago.
I work at @github.com, and I love building projects, advising startups, helping people learn, and making memes.
Most of my work is open source, and I have a weekly newsletter and blog at cassidoo.co. Check it out, and see you around!
I'm Cassidy, based in Chicago.
I work at @github.com, and I love building projects, advising startups, helping people learn, and making memes.
Most of my work is open source, and I have a weekly newsletter and blog at cassidoo.co. Check it out, and see you around!
I was asked to speak about parenthood in tech, and it's... very hard to do. So here's a brief attempt at some words.
youtu.be/oOTuz3UUn1o
youtu.be/oOTuz3UUn1o
Tech parenthood is great, and weird, and exciting, and tiring, and...
I'm a mom in tech and love it... and yet it's really hard to talk about! There's so much to say and yet it's so hard to sum literally any of it up. So here's a partial attempt at that.
---
Website…
youtu.be
February 10, 2026 at 3:08 AM
I was asked to speak about parenthood in tech, and it's... very hard to do. So here's a brief attempt at some words.
youtu.be/oOTuz3UUn1o
youtu.be/oOTuz3UUn1o
Reposted by Cassidy
nolanlawson.com/2026/02/07/w... - thanks @cassidoo.co for sending me this one from @nolanlawson.com that perfectly sums up my feeling right now. Tempted to go write this out on some ancient looking piece of fabric in cursive and hang it on the wall!
We mourn our craft
I didn’t ask for this and neither did you. I didn’t ask for a robot to consume every blog post and piece of code I ever wrote and parrot it back so that some hack could make money off o…
nolanlawson.com
February 9, 2026 at 9:20 AM
nolanlawson.com/2026/02/07/w... - thanks @cassidoo.co for sending me this one from @nolanlawson.com that perfectly sums up my feeling right now. Tempted to go write this out on some ancient looking piece of fabric in cursive and hang it on the wall!
Reposted by Cassidy
I really liked reading this post by @cassidoo.co
cassidoo.co/post/good-br...
Especially the quote:
“Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them.”
Frank Herbert, Dune
cassidoo.co/post/good-br...
Especially the quote:
“Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them.”
Frank Herbert, Dune
Do not give up your brain
It's tempting to just let tools think for you, but you still need to be able to think for yourself and stay sharp.
cassidoo.co
February 9, 2026 at 4:22 PM
I really liked reading this post by @cassidoo.co
cassidoo.co/post/good-br...
Especially the quote:
“Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them.”
Frank Herbert, Dune
cassidoo.co/post/good-br...
Especially the quote:
“Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them.”
Frank Herbert, Dune
I forgot about having to do this in marching band and I felt such a visceral reaction as the rehearsal memories flooded back
February 9, 2026 at 5:45 PM
I forgot about having to do this in marching band and I felt such a visceral reaction as the rehearsal memories flooded back
Now that the Superb Owl day is finished, we can get back to what we all really want to do: read fun tech newsletters 🏈
(the latest issue of mine is out now!)
cassidoo.co/newsletter/
(the latest issue of mine is out now!)
cassidoo.co/newsletter/
rendezvous with cassidoo
A weekly newsletter with web development content for everyone, from beginners to pros.
cassidoo.co
February 9, 2026 at 8:42 AM
Now that the Superb Owl day is finished, we can get back to what we all really want to do: read fun tech newsletters 🏈
(the latest issue of mine is out now!)
cassidoo.co/newsletter/
(the latest issue of mine is out now!)
cassidoo.co/newsletter/
Reposted by Cassidy
This week @splatterjacket.bsky.social was featured in @cassidoo.co ‘s excellent newsletter. The newsletter is a wonderful mix of links to tech and non tech interesting things, a job interview question, and a joke. I can’t thank Cassidy enough. Subscribe here… cassidoo.co/newsletter/
rendezvous with cassidoo
A weekly newsletter with web development content for everyone, from beginners to pros.
cassidoo.co
February 6, 2026 at 7:05 AM
This week @splatterjacket.bsky.social was featured in @cassidoo.co ‘s excellent newsletter. The newsletter is a wonderful mix of links to tech and non tech interesting things, a job interview question, and a joke. I can’t thank Cassidy enough. Subscribe here… cassidoo.co/newsletter/
I know hahaha, I will very very likely just do text over my face like I did in this one... every time LOL
February 7, 2026 at 6:19 PM
I know hahaha, I will very very likely just do text over my face like I did in this one... every time LOL
Reposted by Cassidy
I'm going to be posting on YouTube more! What do you want to learn? What content would be most valuable for you?
youtu.be/WaY-t6FhtV4
youtu.be/WaY-t6FhtV4
Hello, is this thing on?
I've been on The Internet for a while but I want to be here more!
What do you want to learn? What content should I make?
Website + blog: https://cassidoo.co
Newsletter:…
youtu.be
February 6, 2026 at 9:22 PM
I'm going to be posting on YouTube more! What do you want to learn? What content would be most valuable for you?
youtu.be/WaY-t6FhtV4
youtu.be/WaY-t6FhtV4
Both I think!! I will probably cross-stream but have static YouTube to do more "polished" or uninterrupted things. Thank you ❤️
February 6, 2026 at 10:31 PM
Both I think!! I will probably cross-stream but have static YouTube to do more "polished" or uninterrupted things. Thank you ❤️
I'm going to be posting on YouTube more! What do you want to learn? What content would be most valuable for you?
youtu.be/WaY-t6FhtV4
youtu.be/WaY-t6FhtV4
Hello, is this thing on?
I've been on The Internet for a while but I want to be here more!
What do you want to learn? What content should I make?
Website + blog: https://cassidoo.co
Newsletter:…
youtu.be
February 6, 2026 at 9:22 PM
I'm going to be posting on YouTube more! What do you want to learn? What content would be most valuable for you?
youtu.be/WaY-t6FhtV4
youtu.be/WaY-t6FhtV4
Reposted by Cassidy
corner-shape is one of those things where when you first see it, it's like "oh cool, I can make a scoop!" It's something new, which is fun, but it can be hard to think of good use cases.
But, as @cassidoo.co looks at here, it's going to open up a lot of possibilities 🙂 cassidoo.co/post/css-cor...
But, as @cassidoo.co looks at here, it's going to open up a lot of possibilities 🙂 cassidoo.co/post/css-cor...
Making interesting borders with CSS corner-shape
You can make cool beveled, rounded, notched, scooped, and elliptical borders with the new CSS corner-shape property!
cassidoo.co
February 5, 2026 at 12:49 PM
corner-shape is one of those things where when you first see it, it's like "oh cool, I can make a scoop!" It's something new, which is fun, but it can be hard to think of good use cases.
But, as @cassidoo.co looks at here, it's going to open up a lot of possibilities 🙂 cassidoo.co/post/css-cor...
But, as @cassidoo.co looks at here, it's going to open up a lot of possibilities 🙂 cassidoo.co/post/css-cor...
February 5, 2026 at 7:08 PM
February 5, 2026 at 6:11 PM
February 4, 2026 at 5:10 PM
Reposted by Cassidy
Happy February!
First newsletter issue of this perfect month (that's a reference to the practice coding question 👀) is out!
cassidoo.co/newsletter
First newsletter issue of this perfect month (that's a reference to the practice coding question 👀) is out!
cassidoo.co/newsletter
rendezvous with cassidoo
A weekly newsletter with web development content for everyone, from beginners to pros.
cassidoo.co
February 2, 2026 at 8:31 AM
Happy February!
First newsletter issue of this perfect month (that's a reference to the practice coding question 👀) is out!
cassidoo.co/newsletter
First newsletter issue of this perfect month (that's a reference to the practice coding question 👀) is out!
cassidoo.co/newsletter
Reposted by Cassidy
We hear the questions constantly: Does AI actually help, or is it just hype? 🤔
So @cassidoo.co dug into the feedback to find out what developers really use AI for, and where it makes the biggest difference in their work.
Here's what she discovered. ⬇️
So @cassidoo.co dug into the feedback to find out what developers really use AI for, and where it makes the biggest difference in their work.
Here's what she discovered. ⬇️
What AI is actually good for, according to developers
Discover how developer feedback and real-world experience are shaping AI coding tools that keep you in control.
github.blog
February 3, 2026 at 5:50 PM
We hear the questions constantly: Does AI actually help, or is it just hype? 🤔
So @cassidoo.co dug into the feedback to find out what developers really use AI for, and where it makes the biggest difference in their work.
Here's what she discovered. ⬇️
So @cassidoo.co dug into the feedback to find out what developers really use AI for, and where it makes the biggest difference in their work.
Here's what she discovered. ⬇️
that was also new to me hahaha
February 4, 2026 at 6:04 AM
that was also new to me hahaha
Ooh neat, thanks for sharing!! 👀
February 3, 2026 at 4:04 PM
Ooh neat, thanks for sharing!! 👀
Windows PS is Windows only and is generally considered "legacy" and regular PowerShell is cross platform
github.com/PowerShell/P...
github.com/PowerShell/P...
GitHub - PowerShell/PowerShell: PowerShell for every system!
PowerShell for every system! Contribute to PowerShell/PowerShell development by creating an account on GitHub.
github.com
February 3, 2026 at 3:27 PM
Windows PS is Windows only and is generally considered "legacy" and regular PowerShell is cross platform
github.com/PowerShell/P...
github.com/PowerShell/P...
GitHub - PowerShell/PowerShell: PowerShell for every system!
PowerShell for every system! Contribute to PowerShell/PowerShell development by creating an account on GitHub.
github.com
February 3, 2026 at 3:26 PM
Windows PS is Windows only and is generally considered "legacy" and regular PowerShell is cross platform
github.com/PowerShell/P...
github.com/PowerShell/P...
I am devastated to learn in 2026 that PowerShell and Windows PowerShell are two different products
February 3, 2026 at 3:14 PM
I am devastated to learn in 2026 that PowerShell and Windows PowerShell are two different products
Reposted by Cassidy
