Damien Redecki

world wide web designer — callstack

[Damien Redecki @madebydamien]

@messybirkin nice one, sending over small line-height bug on safari

[Callstack Engineers @callstackio]

Announcing Apex: agentic coding model for mobile and web, specialized in React.

We built Apex from a single idea: can an open-weight model deliver frontier-level performance at lower cost?

Yes. Apex is SOTA in React Native and Next.js.

Try it now: https://t.co/nKbBxcmRFX

[Damien Redecki @madebydamien]

it's time

[Apex (by Callstack) @apex__ai]

T-1

[Michał Pierzchała @thymikee]

What would you build if you stopped worrying about tokens?

In the @AgentConf keynote: how we went from chatting with agents to running software factories.

We train, evaluate, and self-host our model Apex for a team of 200+. SOTA on React Native. Used daily for everything else.

[Damien Redecki @madebydamien]

@AgentConf @callstackio and some bbq & beers after

[Damien Redecki @madebydamien]

@AgentConf by @callstackio

[Damien Redecki @madebydamien]

@kerem @CarbonHealth I'll never forget your og portfolio with https://t.co/oGbetg1FN6 music widget and blue K logo, visited it too much looking for inspiration. ps. good luck with your own thing!

[Lech Poznań ⭐️ @LechPoznan]

𝐆𝐑𝐀𝐌𝐘 🔥

🏆 2. runda eliminacji Ligi Mistrzów
🆚 Aarhus GF
🕖 19:00
🏟️ Cepheus Park Randers
📺 TVP Sport

[Damien Redecki @madebydamien]

@_ptonik sometimes you need to look for less ai-native options too

[Damien Redecki @madebydamien]

new callstack drop

[Callstack Engineers @callstackio]

When the way software is built changes, we help companies adopt it.

For over a decade, that meant bringing React Native to production across mobile, web, desktop, and TV.

Now we are expanding that same mission to AI-native engineering: helping teams ship software with agents, safely and at scale.

This is our new manifesto.

[CANAL+ SPORT @CANALPLUS_SPORT]

𝐋𝐄𝐂𝐇 𝐏𝐎𝐙𝐍𝐀𝐍́ 𝐌𝐈𝐒𝐓𝐑𝐙𝐄𝐌 𝐏𝐎𝐋𝐒𝐊𝐈! 🏆

[Damien Redecki @madebydamien]

@xeonbloomfield @ChmalSzymon @callstackio @grabbou @ChmalSzymon @xeonbloomfield fun fact, even I don't know GIMP xd

[Damien Redecki @madebydamien]

→ looking for brand & marketing designer @callstackio
→ work hand in hand with me + @grabbou
→ AI, marketing, web, events, products, and everything in between

→ DM if this sounds like your thing
→ https://t.co/5qCuhbvjlk

[Agent Conf | Warsaw 2026 @reactuniverse_]

Our next speaker is @thymikee, Principal Engineer at @callstackio.

He’s passionate about building mobile and web experiences, high-quality JS tooling, and Open Source.

As a Core React Native Community and Jest contributor, he focuses on pushing the ecosystem forward and shaping the tools and frameworks developers rely on every day.

Join us on June 23, 2026 in New York City 👉https://t.co/UL8OC5liRG

[Agent Conf | Warsaw 2026 @reactuniverse_]

React Universe Summit looks at where React Native drives real business impact. We’ll cover:

✔️ Brownfield as a strategic investment
✔️ AI impact on product & teams
✔️ Super apps & modular platforms
✔️ Enterprise infrastructure & security
✔️ Production success stories
✔️ Next bets in platform strategy

Join us on June 23 in NYC 👇 https://t.co/rqUk1TZRBs

[Callstack Engineers @callstackio]

Apple Foundation Models fit best in the supporting layer around mobile AI.

Titles, summaries, rewrites, and labels are a good match for local execution.

Long-context and heavier reasoning still belong in the cloud.
We wrote about where that split works well on mobile.👇

[Damien Redecki @madebydamien]

@mymind yay, it's working again. thanks! 🙇‍♂️

[Damien Redecki @madebydamien]

hey @mymind can't search anything on web or app. it's just me or something is off?