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Jon Kuperman

@jonkuperman.com
6.9K followers 835 following 2.1K posts

jobless for one week

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Jon Kuperman @jonkuperman.com · 12/09/2026
lol why is spotify catching strays in this hn comment news.ycombinator.com/item?id=4964...
H hacker news comment about an article where Shopify rewrote their React Native codebase to native apps. The comment says:

Numbers from GPT Astra - Shopify has 3000 engineers as of 2026
- Google Chrome when released in 2008 conservatively had ~ 60 engineers.

- GTA 5 in its credits had 150 software engineers. Surprising even to me who has had many an experience of being in a bloated FAANG team, this 150 includes GTA Online!

In a sane society, Shopify’s opinion on anything engineering related would be thrown into rubbish because they seem to have managed to complicate a simple app into requiring thousands of engineers and now maybe millions in cloud spending to Frontier labs. This is unfortunately not an isolated case, Spotify for one has the same issue, idk what “engineering” Spotify is doing, it’s the worst app I’ve used in my life.
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Jon Kuperman @jonkuperman.com · 04/09/2026
I like to keep our AI team on their toes by asking about models that don’t exist
A slack message that says “When are we getting access to Aurelius? It's been out for weeks now…”
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Jon Kuperman @jonkuperman.com · 03/09/2026
A ChatGPT query on ultra thinking mode that asks “Why does my stomach hurt every time I eat more than 200 peanut m&ms?”
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Jon Kuperman @jonkuperman.com · 02/09/2026
Yes, AI wrote the code. But I have a good understanding of how it works!
My dog staring at me looking thoroughly unconvinced
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Jon Kuperman @jonkuperman.com · 29/08/2026
I see your "motorcycle on car" and I raise you "chair on bicycle"
A street sign with a circle around a motorcycle on top of a cara wooden chair on top of an ebike
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Jon Kuperman @jonkuperman.com · 25/08/2026
This was fun github.com/jkup/whoiz
You can run npx @jkup/whoiz on any URL and it will tell you all the endpoints and what web host or CDN they use!
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Jon Kuperman @jonkuperman.com · 20/08/2026
github.blog/news-insight...
Since April, monthly GitHub commits have gone from 1.4 billion to 2.9 billion.
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Jon Kuperman @jonkuperman.com · 27/07/2026
www.nature.com/articles/s43...
Graphs showing fish and poultry impact the climate less than lamb and beef
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Jon Kuperman @jonkuperman.com · 19/07/2026
that was WILD
France 4 vs. England 6 in the world cup third place playoff
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Jon Kuperman @jonkuperman.com · 17/07/2026
Apple Intelligence is incredible
A photo of a cow labeled “cow” and a dog labeled “dog” on a screen where Apple is bragging about their image recognition
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Jon Kuperman @jonkuperman.com · 15/07/2026
Well that escalated quickly meme
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Jon Kuperman @jonkuperman.com · 08/07/2026
Bluesky is cool
My timeline is full of people saying “technology X is cool”
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Jon Kuperman @jonkuperman.com · 03/07/2026
tfw you visit Spain so much you still have leftover data on your eSIM!
My eSIM saying I still have 11 days left on the plan I purchased last time i visited
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Jon Kuperman @jonkuperman.com · 22/06/2026
I don’t know how I feel about this
In the weights dot com website says my name is in many models for js and web perf and accessibility
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Jon Kuperman @jonkuperman.com · 22/06/2026
Going high budget for this @npmx.dev interview 😂 @ashley-c.bsky.social @tchetwin.bsky.social @patak.cat @danielroe.dev
The five of us standing in Bloomberg’s fancy tv studio
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Jon Kuperman @jonkuperman.com · 20/06/2026
Making so many new friends on this trail!
Me walking with a bunch of cows
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Jon Kuperman @jonkuperman.com · 18/06/2026
This man was so excited to tell me what was in the dish he made, he went in the back and found an English gastronomy book 😂 😭 🥰 🇪🇸
Me and the guy and the book Padron peppers and an amazing pork dish
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Jon Kuperman @jonkuperman.com · 16/06/2026
Watching @danielroe.dev show @marinaaisa.com his Bluesky pro tips
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Jon Kuperman @jonkuperman.com · 14/06/2026
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Jon Kuperman @jonkuperman.com · 27/05/2026
f
A Google search for how many letter f are there in the word filibuster. Google ai says two but the correct answer is 1
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Jon Kuperman @jonkuperman.com · 08/05/2026
lol spanish autocorrect 🦷 🧚‍♀️
I typed Ratoncito and it suggested Perez
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Jon Kuperman @jonkuperman.com · 26/04/2026
Which one is me and which is a professional barista? Can you even tell!?
A beautiful latte with amazing art My horrible latte art
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Jon Kuperman @jonkuperman.com · 22/04/2026
Apropos of nothing look at this freaking dinner I had tonight 😍
Chicken katsu curryEel on rice in a bowlBlackened codGrilled salmon
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Jon Kuperman @jonkuperman.com · 22/04/2026
I hope this doesn’t awaken anything in me
As espresso machine and hand grinder
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Jon Kuperman @jonkuperman.com · 20/04/2026
For $80M you’d think she’d get her name in the headline
Independent headline reads Wife of LA Clippers owner and billionaire Steve Ballmer steps in to help save the future of NPR with $80M gift
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Jon Kuperman @jonkuperman.com · 14/04/2026
Weird sushi bar
Me and Ashley and Nic and Rob Cheese on a cheese carousel Cheese and a cookie and a beer Grilled cheese and chorizo
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Jon Kuperman @jonkuperman.com · 03/04/2026
Having a very normal Easter weekend.
Semana Santa procession in Spain Semana Santa procession in Spain Semana Santa procession in Spain Semana Santa procession in Spain
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Jon Kuperman @jonkuperman.com · 03/04/2026
This is the “X (formerly Twitter)” of geography
Google Maps says “Gulf of Mexico(Gulf of America)”
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Jon Kuperman @jonkuperman.com · 01/04/2026
Bloomberg to Cloudflare in London is such an iconic walk
St Paul’s from a window A bridge over the Thames The Thames in LondonThe London eye
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Jon Kuperman @jonkuperman.com · 01/04/2026
Vinext HQ 👀
Cloudflare London office
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Jon Kuperman @jonkuperman.com · 31/03/2026
@tchetwin.bsky.social that was impossibly fast
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Jon Kuperman @jonkuperman.com · 31/03/2026
Me, about to fall asleep
A Reddit alert at 12:36am that Trump is threatening to blow up all water desalination plants in Iran
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Jon Kuperman @jonkuperman.com · 30/03/2026
What is a professional sounding way of telling my boss I’m only on mute because my dog is snoring too loudly
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Jon Kuperman @jonkuperman.com · 26/03/2026
You ever find a new meme and literally cannot wait to use it?
A SpongeBob meme where a family, marked with a European Union flag is being shuffled away from a US flag to safety
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Jon Kuperman @jonkuperman.com · 10/03/2026
I’ve heard of blue cheese before but never like this
Lavender flavored cheese that is actually blue!
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Jon Kuperman @jonkuperman.com · 10/03/2026
Source maps are a vital part of modern web development, but the lack of a standard made it impossible for us to add new features or improve the debugging experience. This is the story of how we standardized source maps and how we continue to ship features through standards 📜 🧵
A JSON file representing a source map. The code contains:

{
  "version": 3, // Always the integer 3
  "file": "out.js", // Optional: name of the generated file
  "sourceRoot": "", // Optional: prefix prepended to each entry in "sources"
  "sources": ["foo.js", "bar.js"], // Required: list of original source URLs/paths (or null)
  "sourcesContent": [null, null], // Optional: inlined source text, aligned with "sources"
  "names": ["src", "maps"], // Optional: symbol names referenced by "mappings"
  "mappings": "A,AAAB;;ABCDE", // Required: encoded mapping data (base64-VLQ deltas)
  "ignoreList": [0] // Optional: indexes into "sources" considered "third-party"
}
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Jon Kuperman @jonkuperman.com · 27/02/2026
Google stocks showing Block down 1% over the past month despite the huge layoff.
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Jon Kuperman @jonkuperman.com · 23/02/2026
Another productive evening 😎
Now up to 14,972 tests passing which is 29.6%!
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Jon Kuperman @jonkuperman.com · 21/02/2026
Work on a javascript engine, they said. It'll be fun, they said.
A JavaScript snippet showing that the apple emoji in a string is somehow less than the banana emoji in a string
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Jon Kuperman @jonkuperman.com · 20/02/2026
Productive evening!
A test suite now showing 27.3% of tests passing, was only 26.1% a few days ago!
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Jon Kuperman @jonkuperman.com · 19/02/2026
No context side project screenshot. What am I up to 🤔
Command line running a project called Rift. It seems to show test262 test coverage of a project which passes 26.1% of tests.
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Jon Kuperman @jonkuperman.com · 10/02/2026
AI goes brrr
Clerk raises $50m in a Series CEntire raises $60m in a seed round
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Jon Kuperman @jonkuperman.com · 31/01/2026
Very proud of this. In addition to doing two Spanish lessons per week, I've been using a video learning service. I normally watch 1-2 hours per month of educational videos but, in January, I watched 14 hours!
My Spanish learning dashboard showing 14 hours this month, 8 weeks in a row of learning!
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Jon Kuperman @jonkuperman.com · 26/01/2026
Oh hello
My dog peeking out from underneath the blanket
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Jon Kuperman @jonkuperman.com · 15/01/2026
wait is this legal in other states
A job posting that says:

It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
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Jon Kuperman @jonkuperman.com · 15/01/2026
Such a great product. I’m very surprised at how the stock has done since IPO
Figma stock showing it’s down 73.48% since IPO
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Jon Kuperman @jonkuperman.com · 05/01/2026
it's happening gif
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Jon Kuperman @jonkuperman.com · 22/12/2025
look at this cool pic of a bird i took
Cool pic of a bird
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Jon Kuperman @jonkuperman.com · 19/12/2025
when you just finished the gym but ur fav song just came on
a google search result for "can i shower with airpods in?"
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Jon Kuperman @jonkuperman.com · 17/12/2025
Average Copilot experience
Star Wars quote “amazing. Every word of what you just said was wrong”
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