ReactJS Barcelona

ReactJS Barcelona - March 2026, Tue, Mar 3, 2026, 6:00 PM | Meetup **Revolut & ReactJS Barcelona meet-up** Our next edition of the meet-up comes with an exciting collaboration with Revolut’s tech team. We’re gathering at Itnig to go beyo

New Meetup alert 🚀 Hosted by @Revolut

ReactJS Barcelona - March 2026

www.meetup.com/reactjs-barc...

YouTube video by Neciu Dan - The Señor Developer Nuxt at Scale with Daniel Roe

Had an amazing convo with @danielroe.dev on everything Nuxt!

Nuxt at Scale with Daniel Roe
youtu.be/WRcqhuTL6y4

ReactJS Barcelona - January 2026, Tue, Jan 20, 2026, 6:30 PM | Meetup New Year, Same ReactJS Meetup! We're back, baby! January Meetup is here! Let's gooo! We have some amazing speakers, and pizza and beer will be available after the event. ──

New Meetup alert!! 🚨

Join me at ReactJS Barcelona - January 2026 meetu.ps/e/PMDzK/w6LT...

Watch on YouTube:

youtu.be/loAuSFtNuc4

YouTube video by Neciu Dan - The Señor Developer Whats new in React 19.2: Activity Component

Activity component explained in 60 seconds:

youtu.be/loAuSFtNuc4

YouTube video by Neciu Dan - The Señor Developer State Management at Scale with Daishi Kato (Author of Zustand, Jotai, Valtio and Waku)

I sat down with @daishikato.com , creator of Zustand, Jotai, Valtio, and Waku

We discuss:

- Zustand vs Jotai vs Valtio
- Why Jotai avoids selectors
- Waku & RSCs
- Much more

➡️ Watch: www.youtube.com/watch?v=ns8i...

#react #zustand #jotai #opensource #softwareengineering

Last night we had our last meetup of the year 🚀🚀🚀

And what a fantastic event we had. Thanks to Lodgify and Tudor Barbu for hosting!

Thanks to our excellent speakers Oscar and Bernabe, who wowed us with two outstanding presentations

See you next time!

YouTube video by Neciu Dan - The Señor Developer ReactJS Barcelona Meetup — Memory Leak Debugging & High-Performance UI Animations

ReactJS Barcelona meetup replay is live 👇

Dealing with Memory Leaks in Production
Practical Guide to Animation in React -
@krambertech.bsky.social

👀 Real prod leak from Sim Local
👀 CSS → spring motion → view transitions → accessibility

🎥 youtu.be/shg25EFdvlU

Like and Subscribe

What a blast we had at our event last night!

Thanks for everyone that joined and made the event memorable!

YouTube video by Neciu Dan - The Señor Developer Vue at Scale with Andreas Panopoulos

🚨 New episode of Señors @ Scale!

Andreas Panopoulos (Hack the Box, Vue.js Athens) on:
⚡ Vue 2 → Vue 3 & Composition API
🏗 Rebuilding Hack the Box on Nuxt 3
🌱 Community, public speaking & scaling with Vue

▶️ youtu.be/d_tFcI07FT0

#vuejs #nuxt #frontend #señorsatscale

Last night was amazing! 🔥🔥🔥

Thanks to everyone who made it to our biggest meetup yet!

A huge thanks to our speakers Yasminn Vaz and Jordi López Galera for some top-notch presentations around testing and ESLint.

Hope to see everybody again soon.

YouTube video by Neciu Dan - The Señor Developer Frontend Architecture at Scale with Faris Aziz

🚨 New episode of Señors @ Scale!

Frontend Architecture at Scale with @farisaziz12.bsky.social (Staff Engineer @ Small PDF, co-founder of ZurichJS)

▶️ youtu.be/4AtijFQQIZY

#frontend #react #nextjs #javascript #señorsatscale

Future of Frontend - Q&A Session Join our interactive Q&A session about the future of frontend development

We are also doing a Q&A on this topic.

So, if you want to participate even online, feel free to ask questions here:

And I will make sure to share the answers after the event. In video format, hopefully.

neciudan.dev/q&a/future-o...

ReactJS Barcelona - August - Summer Vibes 🔥, Tue, Aug 19, 2025, 7:00 PM | Meetup Let's bring the heat 🔥 🔥 🔥 As August was not as hot as expected, we're bringing something new to the August Meetup! **Panel Discussion on the Future of Frontend Develo

August was not hot enough in Barcelona, so at @reactbarcelona.bsky.social , we're hosting a Summer Vibes Panel 🏖️ to discuss the Future of Frontend Development.

Panel members:

@anfibiacreativa.bsky.social, Tudor Barbu, and Bruno Paulino

Barcelona on August 19th

www.meetup.com/reactjs-barc...

YouTube video by Neciu Dan - The Señor Developer React Keys is not just for lists

Quick video on how to correctly use Keys in React.

Check it out 👇

youtu.be/l-2zAVxdSDM

YouTube video by Neciu Dan - The Señor Developer Pragmatism at Scale with Tudor Barbu

“We fixed the layout shift by hardcoding everything.
2 days later, users were happy, PMs were calm, and the tech debt was contained in one file.”

This is just one of the lessons from my convo with Tudor Barbu on the Señors at Scale podcast:

www.youtube.com/watch?v=vcUg...

More links in 🧵

The July ReactJS Barcelona meetup wrapped up last night.

Thanks for everyone who joined! We had a blast! Thanks to @preply.bsky.social for hosting and our amazing speakers @cssorlandi.bsky.social and Thomas Steiner!

Tomorrow (July 15th) is the big day!

Check the agenda! Make sure to arrive on time at 18:00 - 18:30

Quick Update: For the July meetup, we received considerable interest from attendees (70 RSVPs + 20 on the waitlist), so we decided to relocate the meetup to a larger venue to accommodate more people.

The new location: Preply HQ

Doors open at 18:00, and we start at 18:30. Please arrive early!

ReactJS Barcelona - July, Tue, Jul 15, 2025, 7:00 PM | Meetup July Meetup is here! Let's gooo! We have some amazing speakers, and pizza and beer will be available after the event. ────────── **19:00: Welcome** Grab a beer, a snack, an

New ReactJS Meetup in July:

www.meetup.com/reactjs-barc...

Tuesday we hosted our fifth meetup of the year!

Thanks so much to our speakers Rashan Smith Danilo, Velasquez 💻land Utku Can Ozturk for giving two fantastic talks!

We are currently planning the meetup in July! So stay tuned!

ReactJS Barcelona - June, Tue, Jun 10, 2025, 7:00 PM | Meetup June Meetup is here! Let's gooo ! We have some amazing speakers, and pizza and beer will be available after the event. ────────── **19:00: Welcome** Grab a beer, a snack, a

New Meetup Alert 🚨
And this time we have 2 talks by 3 amazing speakers:

Re-thinking Next.js: Why We Picked Astro for Kleinanzeigen's High-Traffic Frontend

And

Mapping the Future: Building Interactive Dashboards with Mapbox/MapLibre and Vector Tiles in React

And of course! Beers and Pizza!

Hello, beautiful ReactJS Developers,

I hope everybody is safe after yesterday's Power Outage. I'm writing to let you know that the ReactJS Meetup is still happening tonight, 19:00, at the CareerOS Offices

Thanks a lot! See you tonight!

ReactJS Barcelona - April, Tue, Apr 29, 2025, 7:00 PM | Meetup April Meetup is here! Let's gooo ! We have some amazing speakers and some pizza and beer after the event! ────────── **19:30: How can vibe coding improve your process witho

New event! 29th of April!

www.meetup.com/reactjs-barc...

Grab a seat!

YouTube video by Neciu Dan - The Señor Developer Build Instant Figma Components using Cursor

When I started Frontend Development, I had to build HTML & CSS from Photoshop.

This process could take days.

The Design Process has improved dramatically with Figma, but only now can you build Figma components in seconds with AI.

Like and subscribe ❤️

www.youtube.com/watch?v=mEj2...

Memorization in 60’

What an amazing time we had at the last ReactJS meetup!

Thanks for all attendees!

Stay tuned 👀 for next meetup announcement!

Building a Design System for Web Applications Building a Design System for Web Applications From Scratch to Continuous Improvement gquinteros93 german-quinteros

Slides for Design System Talk:

docs.google.com/presentation...

Smarter Routing with Tanstack Router Smarter Routing with Tanstack Router By Alvaro Ritorto zwenger

Slides for Tanstack talk By Alvaro:

docs.google.com/presentation...

Thanks for everyone who attended last nights meetup! It was a blast.

Special thanks to our speakers and CareerOS for hosting!

Stay tuned for our next meetup in April!