J☁e Duffy

Founder @PulumiCorp · Everything after code, as code · Eat, sleep, code, repeat.

[J☁e Duffy @funcOfJoe]

8 years and we're still just getting started! 🙌

[J☁e Duffy @funcOfJoe]

@adamhjk @AmplifyPartners @jesserobbins @stolinski S tier, congrats, hope you’re having fun🤘

[J☁e Duffy @funcOfJoe]

@simonw 🤣

I couldn't help myself.

"Generate an SVG of a walrus playing the bagpipes"

[J☁e Duffy @funcOfJoe]

@simonw 🤣

I couldn't help myself.

"Generate an SVG of a walrus playing the bagpipes"

[J☁e Duffy @funcOfJoe]

@20thr @scalevp @NEA @20vcFund Epic. Congrats 🙌

[J☁e Duffy @funcOfJoe]

Follow Beef here: https://t.co/8hEy9BzW3K

[J☁e Duffy @funcOfJoe]

Our newest intern, Beef, made his first commit!

[Christian Nunciato @cnunciato]

Say hello to the Pulumi Dev Center! 👋

We just launched this yesterday — a new home at https://t.co/5WZO0hQrD4 for all tutorials, templates, examples, how-to blogs, and upcoming events, all browseable and searchable and (hopefully!) easy to get around in.

I've wanted this to exist for about as long as I can remember, so I'm stoked it's finally out there. Check it out when you can! I hope it brings you some joy. 💜

[J☁e Duffy @funcOfJoe]

Neo Security is shockingly good.

We need more defense in this world of increasing offense, and I'm happy we can play a small role on the infrastructure side of things.

Amazing what frontier models + context + tools + domain-specific skills + owning the write path, can do.

[Pulumi @PulumiCorp]

Neo Security is our infrastructure security agent.

It uses full context about your cloud estate to build a threat model, analyze it, and discover vulnerabilities. Remediations are easy thanks to IaC.

In research preview starting today: https://t.co/5F08nFr6dD

[J☁e Duffy @funcOfJoe]

@samlambert Seeing the same. Customer, product, outcome oriented: succeeding wildly. Artisanally hand crafted code for code’s sake: struggling hard.

[Sam Lambert @samlambert]

cursor's thermo-nuclear-code-quality-review is extremely good btw

[CascadiaJS 🇺🇸 🇨🇦 @CascadiaJS]

Joe Duffy, Founder and CEO of @PulumiCorp, closed out Day 1 of CascadiaJS 2026 with a look at what happens when AI agents move beyond writing code and start handling the messy world of infrastructure, deployment, and operations.

@funcOfJoe demoed AI agents using APIs to dynamically provision infra and explored a future where the line between code and infra just completely goes away.

https://t.co/JvIdvSPGde

[J☁e Duffy @funcOfJoe]

Next up: agent loops go recursive, and then tail recursion, and then

[J☁e Duffy @funcOfJoe]

@ibuildthecloud But Darren …

LOOPS.

[J☁e Duffy @funcOfJoe]

@martin_casado - Hire A+ players for $200M
- Have them label data
- Profit
?

[J☁e Duffy @funcOfJoe]

@mattnucc @thdxr @dok2001 So sorry, DM settings got horked. Fixed now, should be good. Worst case, email at [email protected] and we can go from there. Thank you! 🙏

[J☁e Duffy @funcOfJoe]

@mattnucc @thdxr Bummer, I'd love to learn more and work w @dok2001 and team to fix. DM me details?

[J☁e Duffy @funcOfJoe]

@thdxr Now seeing 28% of Pulumi ups done with agents ... that number is only going to go up, quick.

[J☁e Duffy @funcOfJoe]

@mattnucc @thdxr 👀 Do agents have a hard time with anything specific to Cloudflare+Pulumi?

[J☁e Duffy @funcOfJoe]

@eastdakota @maddiehfaulkner @NEA @ScottDSandell This very story convinced me to team up with Scott, Aaron, and the NEA team to lead our Series B too. In hindsight, I couldn't be happier about that decision.