Jonnie Hallman
@jonnie.com
Principal Design Engineer at era.app. Ex-Stripe.
Building cushionapp.com and bball.app at night.
Portfolio at destroytoday.com.
Experiments at jonnie.com.
Co-mayor of designtown.nyc.
Doing too much.
Building cushionapp.com and bball.app at night.
Portfolio at destroytoday.com.
Experiments at jonnie.com.
Co-mayor of designtown.nyc.
Doing too much.
Pinned
Jonnie Hallman
@jonnie.com
· Nov 13
🔊 New website just dropped!
I redesigned my dad’s website for his freelance book cover illustration studio: hallmanstudio.com
I redesigned my dad’s website for his freelance book cover illustration studio: hallmanstudio.com
Reposted by Jonnie Hallman
i'm hiring a 'growth engineer' to work side-by-side with me at val.town in brooklyn
we're a small team on a mission to spread the joy of programming
we're looking for someone self-directed, loves talking to users, write english & typescript, and own projects end-to-end
if this is you, reach out!!
we're a small team on a mission to spread the joy of programming
we're looking for someone self-directed, loves talking to users, write english & typescript, and own projects end-to-end
if this is you, reach out!!
October 28, 2025 at 2:48 PM
i'm hiring a 'growth engineer' to work side-by-side with me at val.town in brooklyn
we're a small team on a mission to spread the joy of programming
we're looking for someone self-directed, loves talking to users, write english & typescript, and own projects end-to-end
if this is you, reach out!!
we're a small team on a mission to spread the joy of programming
we're looking for someone self-directed, loves talking to users, write english & typescript, and own projects end-to-end
if this is you, reach out!!
If anyone’s had to deal with disputes before, this is one of the most practical and useful applications of AI I’ve seen.
October 3, 2025 at 3:57 PM
If anyone’s had to deal with disputes before, this is one of the most practical and useful applications of AI I’ve seen.
Happy NIN Tron soundtrack release day for those who celebrate! open.spotify.com/album/47pjW3...
TRON: Ares (Original Motion Picture Soundtrack)
open.spotify.com
September 19, 2025 at 5:39 PM
Happy NIN Tron soundtrack release day for those who celebrate! open.spotify.com/album/47pjW3...
Reposted by Jonnie Hallman
Two somewhat contradictory beliefs I hold:
1. You should absolutely overengineer your personal homepage/blog/projects. Experiment with as many things as you can as quickly as possible.
2. If you _really_ wanted to write that blog post, you'd figure it out with a .txt file. Don't overcomplicate it.
1. You should absolutely overengineer your personal homepage/blog/projects. Experiment with as many things as you can as quickly as possible.
2. If you _really_ wanted to write that blog post, you'd figure it out with a .txt file. Don't overcomplicate it.
September 14, 2025 at 8:28 PM
Two somewhat contradictory beliefs I hold:
1. You should absolutely overengineer your personal homepage/blog/projects. Experiment with as many things as you can as quickly as possible.
2. If you _really_ wanted to write that blog post, you'd figure it out with a .txt file. Don't overcomplicate it.
1. You should absolutely overengineer your personal homepage/blog/projects. Experiment with as many things as you can as quickly as possible.
2. If you _really_ wanted to write that blog post, you'd figure it out with a .txt file. Don't overcomplicate it.
Had a blast sharing a new side project at the AIR Show & Tell last night at Index Space.
(and love seeing all the smiles after the fact since it was tunnel vision for me during the talk 😅)
(and love seeing all the smiles after the fact since it was tunnel vision for me during the talk 😅)
July 18, 2025 at 3:38 PM
Had a blast sharing a new side project at the AIR Show & Tell last night at Index Space.
(and love seeing all the smiles after the fact since it was tunnel vision for me during the talk 😅)
(and love seeing all the smiles after the fact since it was tunnel vision for me during the talk 😅)
All I want is a Love Island season where someone takes the money.
July 14, 2025 at 3:10 AM
All I want is a Love Island season where someone takes the money.
I wish I could have AI in my IDE in the sense that I could tell it to never show me certain auto-suggestions ever again and it’ll listen and maybe even apologize.
July 13, 2025 at 11:22 PM
I wish I could have AI in my IDE in the sense that I could tell it to never show me certain auto-suggestions ever again and it’ll listen and maybe even apologize.
In case it’s helpful to anyone else… my local `vercel dev` randomly slowed down to 1-2 sec for every request that went through it—even assets. No idea what it was until I realized that the requests were directly affected by the number of files in my repo. Using `.vercelignore` instantly fixed it. 🌠
July 10, 2025 at 4:27 PM
In case it’s helpful to anyone else… my local `vercel dev` randomly slowed down to 1-2 sec for every request that went through it—even assets. No idea what it was until I realized that the requests were directly affected by the number of files in my repo. Using `.vercelignore` instantly fixed it. 🌠
Just troubleshooted (shot?) an issue that stumped multiple AI models, but was the first Stack Overflow result when searching Google. 🙃
July 9, 2025 at 1:24 AM
Just troubleshooted (shot?) an issue that stumped multiple AI models, but was the first Stack Overflow result when searching Google. 🙃
Update: I got my hopes up too soon. While the fixed worked locally, it broke production and further attempts by the AI agent to fix it ended up down red herring rabbit holes and used up all my “premium request” credits for the month… in a single night. 🙃
bsky.app/profile/did:...
bsky.app/profile/did:...
July 6, 2025 at 2:54 PM
Update: I got my hopes up too soon. While the fixed worked locally, it broke production and further attempts by the AI agent to fix it ended up down red herring rabbit holes and used up all my “premium request” credits for the month… in a single night. 🙃
bsky.app/profile/did:...
bsky.app/profile/did:...
If this actually works, I’ll never say anything bad about AI ever again.
(if only coding agents were around when we had Webpack…)
(if only coding agents were around when we had Webpack…)
July 5, 2025 at 7:57 PM
If this actually works, I’ll never say anything bad about AI ever again.
(if only coding agents were around when we had Webpack…)
(if only coding agents were around when we had Webpack…)
Diving into the complex world of push notification logic…
June 26, 2025 at 3:07 AM
Diving into the complex world of push notification logic…
I think the reason I’m having so much fun building a native app with Capacitor is because it feels like Adobe Air did for my Flash apps—nothing’s different about the code I’m writing, but now I have access to the OS’s SDK.
If you’re not a React person either, check it out: capacitorjs.com
If you’re not a React person either, check it out: capacitorjs.com
Capacitor by Ionic - Cross-platform apps with web technology
Build iOS, Android, and Progressive Web Apps with HTML, CSS, and JavaScript
capacitorjs.com
June 21, 2025 at 5:54 PM
I think the reason I’m having so much fun building a native app with Capacitor is because it feels like Adobe Air did for my Flash apps—nothing’s different about the code I’m writing, but now I have access to the OS’s SDK.
If you’re not a React person either, check it out: capacitorjs.com
If you’re not a React person either, check it out: capacitorjs.com
I’ve officially joined the “Waiting for review” club 🥱
(the web club is way better 🤫)
(the web club is way better 🤫)
June 21, 2025 at 12:06 AM
I’ve officially joined the “Waiting for review” club 🥱
(the web club is way better 🤫)
(the web club is way better 🤫)
Trying to get an app on the App Store and wondering at what point the bridge troll asks me to solve 3 riddles.
June 19, 2025 at 6:00 PM
Trying to get an app on the App Store and wondering at what point the bridge troll asks me to solve 3 riddles.
I can’t believe this is real life. 🏀
June 16, 2025 at 8:29 PM
I can’t believe this is real life. 🏀
Going through the ropes to set up an Apple developer account so I can build for iOS and I already miss the web.
June 3, 2025 at 2:34 AM
Going through the ropes to set up an Apple developer account so I can build for iOS and I already miss the web.
When you’re excitedly building something fun for the web, but reach the point where you need to wait for DNS propagation.
June 1, 2025 at 10:00 PM
When you’re excitedly building something fun for the web, but reach the point where you need to wait for DNS propagation.
There are 3 walking speeds at IKEA:
- I have no idea what I need
- I know exactly what I need
- I want a divorce
- I have no idea what I need
- I know exactly what I need
- I want a divorce
May 31, 2025 at 10:33 PM
There are 3 walking speeds at IKEA:
- I have no idea what I need
- I know exactly what I need
- I want a divorce
- I have no idea what I need
- I know exactly what I need
- I want a divorce
Pacers fans have it too good. 😭
May 30, 2025 at 3:13 AM
Pacers fans have it too good. 😭
Several months ago, my dad invited me to go with him to the Indy 500, which is this upcoming weekend, and it couldn’t be a better weekend for NYC basketball, so I took full advantage of the opportunity…
May 22, 2025 at 4:34 AM
Several months ago, my dad invited me to go with him to the Indy 500, which is this upcoming weekend, and it couldn’t be a better weekend for NYC basketball, so I took full advantage of the opportunity…
👋 Looking for a full-time backend engineer to jam with.
- a plus if they’re into AI
- a bigger plus if they’re into automating personal finance
- US-based (a huge plus if NYC/east coast)
Would love some help asking around. 🙏
- a plus if they’re into AI
- a bigger plus if they’re into automating personal finance
- US-based (a huge plus if NYC/east coast)
Would love some help asking around. 🙏
May 14, 2025 at 1:25 PM
👋 Looking for a full-time backend engineer to jam with.
- a plus if they’re into AI
- a bigger plus if they’re into automating personal finance
- US-based (a huge plus if NYC/east coast)
Would love some help asking around. 🙏
- a plus if they’re into AI
- a bigger plus if they’re into automating personal finance
- US-based (a huge plus if NYC/east coast)
Would love some help asking around. 🙏