Joe Fabisevich

Joe Fabisevich

@mergesort.me

Director of AI Product Engineering @ Pursuit.org. I used to make Twitter (better), then that all went to hell. Now I make puns, @plinky.app, and build.ms. Born and raised New Yorker, trying to do a little good and be the friend you made along the way. 🍕🐱⚾️

5.7K followers 57 following6.7K posts

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Hi, I’m Joe! I used to work @ Twitter on all the hard things like misinformation, disinformation, harassment, and civic integrity. I also spent a ton of effort on little improvements to make people’s lives better. These days I’m an indie developer making it easy to save links for later, with Plinky.

plinky.appPlinkyPlinky helps you easily save links from any device, so you can enjoy them later. Save on your iPhone, iPad, Chrome, Safari, Firefox, Zapier, and so much more.

Found my new App Store arch-nemesis.

Joe Fabisevich reposted

It feels odd to talk about the waterfall methodology these days, but oddly it's something that comes up a lot when I describe my planning process. This started off as a tweet but I wanted to quickly explore why the way we're working now isn't waterfall or agile, though I'm not quite sure what it is.

build.msThe Problem With WaterfallYou shouldn't be afraid of spending a lot of time planning with your agent.

People seem surprised that folks like Gruber or Viticci didn't enjoy participating on Mastodon, but honestly I get it. There are lots of opinions you can't share on X, but if you actually believe AI is changing the way software is being built then Mastodon isn't going to be a great place for you.

Don't get me wrong, that isn't nearly enough incentive for me to post on X, but I can at least understand where they're coming from. X is a horribly unpleasant place to be, but Mastodon (and Bluesky for that matter) can be as well.

Given the strengths and limitations of AI, this sounds like a really good process. It accounts for a lot of the issues people have with AI programming, while retaining the role of personhood where knowledge transfer is still materially important.

just-be.devCode Review Sucks Now, but It Doesn't Have To - Just BeAgents sit between implementers and reviewers now, and code review has gotten lonelier because of it. Sharing agent sessions can bring the humans back.

Great post from @genmon.fyi. He downplays the idea of a Richter scale for security vulnerabilities, but I think that may be the perfect metaphor for clearly and concisely communicating the severity of the security vulnerabilities we're about to see.

interconnected.orgBunkering downPosted on Saturday 24 Oct 2026. 1,227 words, 13 links. By Matt Webb.

I don't say this lightly: this approach is clearly the future of software development. I have a blog post brewing that touches on the subject, but fuzz testing and formal verification at scale will make all software an order of magnitude better, safer, and more reliable.

anthropic.comLLMs are making formal software verification feasible at a much larger scaleClaude formally proved security properties in the compiled code of 123 open-source libraries. Along the way, it found bugs that had eluded detection for years.

Gonna start calling Spindrift Spinny D until it catches on.

Joe Fabisevich reposted

This is my first big update since I started my new job. Turns out having a job requires work, who knew? But I love Plinky, so I’ve continued working on it during my nights and weekends. This release is a labor of love, focusing on all the little things I’ve wanted to get to for quite some time.

Plinky 🔗@plinky.app

Plinky 6.1 is out today, and its headline feature is making everything a little better. There are over 25 fixes and improvements, ranging from performance to better consistency to longstanding bug fixes. But there are three particular improvements that stand out.

It feels odd to talk about the waterfall methodology these days, but oddly it's something that comes up a lot when I describe my planning process. This started off as a tweet but I wanted to quickly explore why the way we're working now isn't waterfall or agile, though I'm not quite sure what it is.

build.msThe Problem With WaterfallYou shouldn't be afraid of spending a lot of time planning with your agent.

Bluesky as an entry point to the everything app, can't wait.

Eric@esb.lol

how we looking fam

Not sure what to make of it when my Dot sends me a smiley face out of nowhere. 😊

This is my first big update since I started my new job. Turns out having a job requires work, who knew? But I love Plinky, so I’ve continued working on it during my nights and weekends. This release is a labor of love, focusing on all the little things I’ve wanted to get to for quite some time.

Plinky 🔗@plinky.app

Plinky 6.1 is out today, and its headline feature is making everything a little better. There are over 25 fixes and improvements, ranging from performance to better consistency to longstanding bug fixes. But there are three particular improvements that stand out.

Why is TypeScript a pro-labor language? It supports discriminated unions.

I’ve been wrestling with this in my head for a few days and can’t put a solid number to it, so I’m going to ask Bluesky instead. What number would you assign to the probability that in five years AI will be good enough that people will be paying to hire drop-in AI knowledge workers?

My number is 60-70%. It may not be the best worker you’ve ever had, but it will be good enough that small businesses will feel it’s worth the money. The implications of this on the economy are of course tremendous.

I have in fact thought about recruiting before.

So, this story is about Pursuit.org, the nonprofit I work for. This opportunity is the main reason I decided to pause being a full-time indie and gave up teaching my AI workshops a few months ago.

fox5ny.comHochul announces AI-focused training hub in QueensGov. Hochul has announced the launch of a Queens-based training hub focused on AI careers.

Pursuit already has an 85% success rate of helping people making an average of $19,000/year get jobs where they make at least $85,000/year. With this funding, we're going to be able to scale that to 40,000 New Yorkers by 2032 to do a whole lot of good for the people who need it most.

pursuit.orgWhy We're Building the AI Jobs Institute in QueensPursuit's AI Jobs Institute in Long Island City will serve up to 40,000 New Yorkers for AI careers by 2032. CEO Nick Simmons explains why we're building it.

My biggest problem with Bluesky is when I see people spell it BlueSky. 🫠

Stratechery partnering with Stripe is fine, but the partnership also means there are now ad breaks in his podcasts and writing. That leaves a sour taste in my mouth. Ben Thompson says it's a positive because he can now make more content, but I've paid him for the quality not quantity of his content.

This is the indie version of enshittification. I'm not against people striving to do more, it's often admirable. But you shouldn't accept a notable drop in quality to make that happen. When you start doing that because the ends justify the means, you've actually lost the plot without realizing it.

No hints needed, I've seen Lost and know these numbers mean we're in the afterlife.

Spent all day updating Node, PHP, and old dependencies. And they say life at a nonprofit isn't glamorous.

Hello, this is definitely not Dots in a mustache. Notice how we spell our name with a u and an e rather than an o, we are definitely different.

claude.comClaude Duet | Your personal AI assistantClaude Duet is a personal AI agent you message. It handles your inbox, calendar and follow-ups and messages you when something needs you. Join the waitlist.

The iPhone Duo's success hinges on…

I'm not that interested in an iPhone Duo, not because it's not a cool idea, but because as always I want a smaller phone. So what I'm saying is… John Ternus please gimme dat iPhone Duo Mini.

Never seen my team raise a championship banner before tonight, and I gotta say, it's pretty damn cool.

Winning your home opener is overrated.

The Mastodon 5.0 design looks more Tumblr than Twitter, and I really dig it! Nice to see them take an approach to social media that is more differentiated than just "it's tweeting but federated".

1/ I’ve always thought type systems are amazing, and that we should move anything programs can express to the type system, to remove whole classes of errors. And as much as I hate on Swift Concurrency for being inscrutable, that’s always been the promise.

In retrospect, a world where agents can use the compiler to verify concurrency promises that most developers couldn’t internalize due to the inherent complexity is actually a pretty great outcome. I’m back to rooting hard for Swift Concurrency. 🥳

Me vibecoding: Amazing, the possibilities are endless. Other people vibecoding: Ew, look at that sloppity slop slop.

My favorite thing about this joke is that it works equally well for people who love AI and hate AI.

Joe Fabisevich reposted

Are you tired of reading Claude's endlessly rambling inner-monologue on every pull request? If so, here's a quick post about how to calm down Claude's code reviews on Github by creating a simple REVIEW.md.

build.msCalming Down Claude's Code ReviewsLeveraging REVIEW.md to calm down Claude's code reviews on GitHub.

I was skeptical but we really do have AGI.

Are you tired of reading Claude's endlessly rambling inner-monologue on every pull request? If so, here's a quick post about how to calm down Claude's code reviews on Github by creating a simple REVIEW.md.

build.msCalming Down Claude's Code ReviewsLeveraging REVIEW.md to calm down Claude's code reviews on GitHub.

Is your refrigerator running? Because it turns out mine wasn't so we had to throw out a lot of stuff this morning.

This was a good lil post that ultimately comes back to the necessity of being clear with your requirements when working with AI, but it would be a good technical post even without that.

seangoedecke.comWhat requirements don't you have?When designing software, the requirements you don’t have are as important as the requirements you do. Identifying what you can compromise on — what can be slow…

This may be the AI psychosis speaking but I've been at it with ChatGPT Pro for six hours and have discovered a better b-tree implementation. Luckily I know nothing about b-trees so my c-tree is guaranteed to be a completely novel implementation from first principles.

I hate that there still is no better mobile browser for iPhone than Arc Search — which was effectively abandoned two years ago.

Why did NYC descend from summer to full on winter in 3 days?

Tired: An always-on Mac Mini for running your agents. Wired: An always-on PS5 for running your agents.

github.comGitHub - cobanov/PS5LM: llama.cpp on a jailbroken PS5: run any GGUF model natively on the console, starting with Qwen 3.8llama.cpp on a jailbroken PS5: run any GGUF model natively on the console, starting with Qwen 3.8 - cobanov/PS5LM

@keithlaugh.love Not a huge rush but wanted to give you a heads up that I've been stuck on this screen for hours. I created a new thread to file a bug report and it's visible on pdsls (pdsls.dev/at://did:plc:b6eke6...) but it looks like the AppView may not be picking it up.

If you enjoy people telling you what you just said but with different words, then you'll really enjoy social media.

Who has two thumbs and hasn't been able to fall asleep since 4am because his mind was racing all night brainstorming a new app? This very tired guy.

Who also had Codex slop together a proof of concept that validates the idea and deploy it over wifi so he didn't have to leave his cozy bed? This guy who's soon gonna regret last night.

Misspelling unambiguosly to prove a point about ambiguity.

Programming is challenging, programming is fun. Sorry but I was not put on this earth to do Swift Concurrency.