Algorithms

If you’re actively **building/coding AI projects** (LLM apps, agents, evals, RAG, infra), come join. This is a **technical networking** meetup. Conversations are usually technically deep and hands-on. 👉🏻 **Good fit:** engineers, technical founders, researchers. 👉🏻 **Not a fit:** "AI curious", general networking. 👉🏻**Bring:** a project, demo, repo, problem you’re stuck on, or a hiring need. ⏰ We'll start at **7:00 PM at [Alice Secret Garden C/ de Pau Claris, 90, L'Eixample!](https://maps.app.goo.gl/ucBUHhce9Ps2dBrJ8)** After you enter through the main entrance, please go straight to the garden in the back: **[video](https://firebasestorage.googleapis.com/v0/b/ai-engineers-website.firebasestorage.app/o/alice-secret-garden.mp4?alt=media&token=41463aed-27db-44f0-ae42-9f6ad2b5d486)** 🔥 Join our **[community on WhatsApp (developers only)](https://forms.fillout.com/t/76vmbAQRoNus)** 🔥 LinkedIn: **[LinkedIn](https://www.linkedin.com/company/ai-engineers-community)** 🔥 Website: **[https://ai-engineers.community](https://ai-engineers.community)** See you then!

**Explora la Barcelona más antigua y descubre sus secretos mejor guardados.** Acompáñanos en un recorrido fascinante por el casco antiguo de la ciudad condal, donde la historia cobra vida en cada rincón. Durante aproximadamente 1 hora y 45 minutos, caminaremos por calles que han sido testigo de siglos de acontecimientos, desde la época medieval hasta nuestros días. Visitaremos algunos de los lugares más emblemáticos como **la Catedral de Barcelona, la Generalitat de Catalunya, la Catedral del Mar, el Born**, y finalizaremos nuestro viaje en el majestuoso **Arc de Triomf**. Este tour está pensado para los amantes de la historia y para los curiosos de corazón❤️​: **te compartiremos datos sorprendentes y anécdotas que te harán ver Barcelona con nuevos ojos.** 🗣 **Idioma:** Español/Català 🙋‍♀️​ **Guía:** Mia Soria 🕰 **Duración:** 1h 45min aprox. 💶 **Precio:** 10 € por persona 💳 **Pago al comienzo del tour en efectivo o vía Bizum** 📍 **Punto de encuentro:** Catedral de Barcelona 📍 **Punto final:** Arc de Triomf *Al finalizar el recorrido, te invitamos a quedarte a tomar algo si te apetece. Será un momento ideal para resolver dudas, compartir conocimientos históricos y disfrutar de un intercambio cultural en un ambiente relajado.* 🍻​ ¿Te animas a redescubrir Barcelona con nosotros?

Join us for a fun afterwork hangout at Wild Rover Bar where you can socialize, make new friends, and enjoy a great time with like-minded individuals. Whether you're a sports fan looking to catch the game with fellow enthusiasts, or if you simply want to unwind after a long day at work, this event is perfect for you. Connect with international friends, network with others in a relaxed atmosphere, and create lasting memories while enjoying good food and drinks. Let's make this evening a memorable one filled with laughter, friendly conversations, and a vibrant social ambiance. Every Monday, Tuesday, Wednesday and Thursday from 6pm to 10pm! p.s. don’t forget about the happy hours! 2 pints of estrella 8€ 2 glasses of vine 8€ 2 mix drinks 12€

[https://barcelonacodeschool.com/reactjs-crash-course/](https://barcelonacodeschool.com/reactjs-crash-course/) ## Front-end web development with React.js! * Intensive in-person hands-on training * 1 week of hardcore React coding * Daily classes 9:00 to 18:00 * The course is taught in English * From zero to 👸 and 🤴 * 15% theory / 85% practice / 100% efficiency ## What you'll learn * Overall concept * JSX syntax * create-react-app * Structuring React app * Components-based approach and reusability * Class and function components * Passing data between components with props * Using state and state management * Shared state management * Events and event handlers * Lifecycle methods * Hooks * Async requests * Promises * Conditional rendering * React router * Metadata in React * Using external components * Production build, deployment ## Prerequisites Solid understanding of JavaScript logic and syntax; functions, loops, conditionals, arrays, objects. Good knowledge of HTML/CSS: DOM, structuring HTML, CSS selectors, Grid, Flexbox. ## The outcomes After this course you will have a strong understanding of the **logic**, **syntax** and **usage**of ReactJS. You will be able to build React apps from scratch and have progress further into the depths of React or any other front-end JS library/framework such as Angular, Vue, Ember or anything else. ## Tuition: 850€ 100% is paid upon registration.

🚀 **Let’s get the week started on the right track! MONDAY NOMAD RUN** with ambitious people will put you in the best mindset to get sh\*t done! ​**NOTE:** No level required — we just want to have a good time, boost endorphins, and kickstart a productive week. **🎟️ FREE EVENT: RSVP required.** ​*For those who want to run more:* * ​*You can do a **“pre-run”** and join just before the start at 7.30 PM* * ​***Run extra and re-join*** *us at the end.* ​**About the meeting point, La Carioca ([check their Instagram](https://www.instagram.com/lacariocabcn/)):** * **LOCATION:** a few meters away from BARCELONETA METRO STOP (Yellow Line) - [GOOGLE MAPS](https://share.google/1nr8bu7hz6e6hP9p5) * **STORAGE:** They will store & lock our belongings * **DISCOUNT:** We'll have a 10% discount on drinks & food! **PROGRAM:** * ​**7.00pm:** Meeting at La Carioca * ​**7.15pm:** Simple networking game/icebreaker + WARMUP * ​**7.30pm:** Start of the run * ​Somewhere in the middle, we'll have 2-3x little breaks! * ​**Approx. 8.15pm:** Return to La Carioca * ​**8.15pm:** Optional drink & dinner :) ​**HOSTED by Lucas, our Nomad Sports Club coach! Follow @nomadsportsclub and @bcndigitalnomads on Instagram for the latest community news and events!** ​See you there! ​---- **🌎 About BARCELONA DIGITAL NOMADS:** *We're one of the biggest communities in town with thousands of members. We organize weekly events such as afterwork meetups, coworking days, networking dinners, and many other spontaneous small hangouts via our WhatsApp community. We also have consulting experts & lawyers for [Digital Nomad Visa, Taxes, etc.](https://h9vlm49h6fl.typeform.com/BDNform).* ​​*📲 Join the Barcelona Digital Nomads* ***[community on WhatsApp](https://linktr.ee/barcelonadigitalnomads) (via LinkTree).*** ​​*🌐 We also have a Barcelona [Business Networking Community on WhatsApp](https://chat.whatsapp.com/DzePn7uLVeIKR1N3qZkq5r)! **Feel free to join!*** ​***👟* NOMAD SPORTS CLUB COLLABS:** * ​\*\*[REBOOT](http://www%20rebootbruc.com/) GYM 10% OFF –\*\* Train at Barcelona’s most exclusive GYM, get an exclusive offer and 10% off on 1-6 month full access gym plans and 10% off all fitness classes! ​💎 **COMMUNITY DISCOUNTS & COLLABS:** * ​​​**PANGIA:** [Best priced eSim](https://pangiapass.com/?ref=fyni7xhg8lhnfifwxdpr5rzvu0g2) (Unlimited data. €23/month. 105+ Countries)​ * ​**ENSO Coliving** (10% discount on your first month, [explained in our LinkTree](https://linktr.ee/barcelonadigitalnomads)) * ​​**CROISSANT App** \| Membership for 30\+ coworking spaces in Barcelona \([€15 discount link](https://www.getcroissant.com/a/viktor50)) * ​​**ClassPass:** [1-month free](https://classpass.com/refer/SD1GSFVH0) membership trial for 100+ gyms, fitness classes & wellness experiences across Barcelona.

Aprovechando este dia de fiesta. Espectacular ruta panorámica de recorrido paisajístico e histórico por los Tres Turons (Rovira, Carmel y Creueta) y donde pasaremos por canteras,bunkers antiaéreos,esculturas, santuarios,puente aéreo y parques.Sin olvidarnos de las maravillosas vistas a toda la ciudad de Barcelona. Distancia: 9km aprox. Duración: 2.30h (acabaremos sobre las 13.45h aprox.). Dificultad: Fácil-Moderada (hay subidas y bajadas,desnivel 280m). 🏃‍♂️🌲🌞 PLAN: ⏲ PUNTO DE ENCUENTRO: 10.30H CARRER DEL SANTUARI 26 (ÉS UN PORTAL AL LADO DE IGLESIA). ÒSCAR, WSP (MI TELF. ESTÁ EN EL APARTADO CÓMO ENCONTRARNOS), LLEVARÉ GORRA ROJA. 🚇 METRO L5, ESTACIÓN TEIXONERA, SALIDA MARE DE DEU DEL COLL. UNA VEZ EN LA CALLE SUBIR HACIA ARRIBA Y ALLÍ ESTÁ LA CALLE SANTUARI. BUS: 22, V17 (PARADA SANTUARI-CEUTA O PARADA SANTUARI-L´HORTAL). 👍 Comienzo ruta. 👀 Aconsejable: estar algo en forma, calzado de senderismo,un litro de agua,gorra , palos, etc. 😃 Final de la ruta.Cerca está metro L5 (COLL-TEIXONERA) y buses. 🍖 Después para comer haremos pícnic (opcional), cada uno se lleva lo suyo y algo para compartir con los demás. 💰 ESTA ACTIVIDAD TIENE UN COSTE DE 8€ (GUÍA-ORGANIZACIÓN) A PAGAR EL MISMO DÍA EN EFECTIVO. TODOS SOMOS ADULTOS Y RESPONSABLES DE UNO MISMO.

🔧 Join us for **two talks** focusing on **getting more out of PHP** without unnecessary complexity, from async execution to performance insights. Stay for **discussion, drinks, and snacks** afterward. **Details** ⏰ Aptil 9th 🗓 Starting 6:30 pm 🇬🇧 Talks in English 🎟 Free 📍NN Working. Carrer de Pau Claris, 194, L'Eixample, 08037 Barcelona (4th floor) **Talks:** **1\. Topic:** **PHP Fibers: simplifying async code and speeding up development** **Speaker:** [Max Fomichev](https://www.linkedin.com/in/maxim-fomichev/), Infrastructure Engineer at Manychat **About the Talk** We constantly search for creative ways to get maximum out of php, without bringing excessive complexity for our developers daily work. In this speech I'll sum up our way, describe where are we now in a bit, and share how we started to use fibers and asynchronous http requests to speed up both our code writing and execution, while avoiding excessive cognitive load for our developers dealing with "asynchronous" programming. **About the Speaker** Max has decades of experience in IT, primarily focused on programming in PHP and running Unix servers. For the past six years, he has been working at Manychat, a leading chat-marketing platform, where I combine the roles of an Infrastructure Engineer, SRE, and developer, optimizing systems and ensuring reliability. **2\. Topic:** PHP Performance Demystified - Measure, Understand, Optimize **Speaker:** [Volker Dusch](https://www.linkedin.com/in/volker-dusch/), Head Of Engineering at Tideways, PHP 8.5 Release Manager **About the Talk** In this talk, we'll explore options for PHP performance analysis. From understanding how the PHP virtual machine and OPCodes work, to performing your own reliable and meaningful benchmarks, and how to use request profiling using open-source and commercial offerings. You will leave with an overview of the available tools and an understanding of how to use them in your day-to-day. Learning how to spot bottlenecks and optimize them away efficiently and confidently. **About the Speaker** With over 20 years of software development experience, Volker has seen PHP grow and mature from PHP 3, working on long-living custom applications in high-traffic environments. From social networks to medical data processing, he has worked as an engineer, team lead, and Head of Engineering, mostly focusing on PHP, Go, C, JavaScript, HTML/CSS and System Operations. https://phpc.social/@edorian **Thanks to Manychat to host the meetup** – [Learn more](http://%5Bhttps/%5B%5Bmedium.com/manychat-engineering%5D%5D%5D(%5Bmedium.com/manychat-engineering%5D%5D)(%5Bmedium.com/manychat-engineering%5D%5D(medium.com/manychat-engineering%5D))(https:/%5B%5Bmedium.com/manychat-engineering%5D%5D(%5Bmedium.com/manychat-engineering%5D)(%5Bmedium.com/manychat-engineering%5D(medium.com/manychat-engineering)))) about Manychat Engineering – [Careers](http://%5Bhttps/%5B%5Bcareers.manychat.com/%5D%5D%5D(%5Bcareers.manychat.com/%5D%5D)(%5Bcareers.manychat.com/%5D%5D(careers.manychat.com/%5D))(https:/%5B%5Bcareers.manychat.com/%5D%5D(%5Bcareers.manychat.com/%5D)(%5Bcareers.manychat.com/%5D(careers.manychat.com/)))) at Manychat – [Videos](http://%5Bhttps://www.youtube.com/playlist?list=PLIfURI1S1wkA2sVy_AYtJcR_HyBpsTa2d%5D(https://www.youtube.com/playlist?list=PLIfURI1S1wkA2sVy_AYtJcR_HyBpsTa2d) "\[https://www.youtube.com/playlist?list=PLIfURI1S1wkA2sVy_AYtJcR_HyBpsTa2d\](https://www.youtube.com/playlist?list=PLIfURI1S1wkA2sVy_AYtJcR_HyBpsTa2d)") from the previous meetups

NEW MEMBERS: REMEMBER TO SEND US YOUR EMAIL TO BARCELONAWRITERS@GMAIL.COM IF YOU HAVEN'T ALREADY DONE SO!! You need to read the submissions! Working on a novel or short story? Get feedback from other writers, find motivation to meet your deadlines, and bemoan the difficulties of the writer's life with like-minded people. We will discuss up to two submissions of 3,000 words at this event. Submissions will be sent out a few days in advance. Please come with the pieces read. New here? Wonderful! But come to a session before you submit, to see what we're all about and how we do things. Please email submissions (3,000 words max.) to barcelonawriters@gmail.com

Nuestra nueva web: [https://www.patreon.com/singlesbarcelona](https://www.patreon.com/singlesbarcelona) 🤩❤️🍹PRACTICA TUS PASOS SHUFFLE DANCE HAZ REELS INSTA TIK TOK HAZ AMISTADES. VEN SOLO/A O CON AMIG@S Y PÁSALO PIPA HACIENDO NUEVAS AMISTADES. ESTE SUBGRUPO SE ORGANIZA A TRAVÉS DE UN CHAT PRO DENTRO DE LA PLATAFORMA PATREON SINGLES BARCELONA. COLABORA, PARTICIPA Y EMPUJA. CREA ACTIVIDAD SOCIAL. COGE LA PALA. [https://www.patreon.com/singlesbarcelona](https://www.patreon.com/singlesbarcelona)

This book club approaches foundational texts that have shaped the past three centuries through a cross-disciplinary reading series that invites us to engage with the questions of our present. Each session pairs one of these works with a strictly contemporary text (as an optional reading), creating a dialogue in which the past becomes a lens for thinking the present, and vice versa. **No academic background is required; curiosity and openness are all you need.** *BUY THE BOOKS HERE:* **This month we will be reading [Against Interpretation and Other Essays by Susan Sontag.](https://backstorybookshop.shop/product/against-interpretation/) Paired with [Ways of Seeing by John Berger](https://backstorybookshop.shop/product/ways-of-seeing/).** Hosted by Josefina Alippi

Os traemos un nuevo coding dojo en **[Plain Concepts](https://www.plainconcepts.com/)**. Esta vez de la mano de **Joaquín Azcarate, Adrián Pastén y Anyul Rivas** 💥 📅 **Agenda** **7 de abril de 2026**, de 18:30 a 21:00. Haremos ensemble programming para realizar la **Tennis Kata**. En esta ocasión le daremos un giro muy interesante: el reto será resolverla aplicando **programación funcional**. ¡Un ejercicio genial para pensar de forma diferente! El idioma será castellano e inglés. 🙇‍♀️ **Facilitan** [Joaquín Azcarate](https://es.linkedin.com/in/joaquin-azcarate), [Adrián Pastén](https://es.linkedin.com/in/adri%C3%A1n-past%C3%A9n-lagos-b3526211b) y [Anyul Rivas](https://es.linkedin.com/in/anyulled/es) 🎒 **¿Qué tengo que llevar?** Ganas de reflexionar y aprender. Si es tu primer coding dojo, puedes ver la charla de Paolo Sciarra: [introduction to coding dojos](https://youtu.be/OwxSSgvR86U) para entender por qué practicamos con katas y qué esperar de un coding dojo. 🏢 **Ubicación** Oficinas de Plain Concepts: Carrer del Comte d'Urgell, 240, 6C, Eixample, 08036 Barcelona. *(Nota para los asistentes: Al llegar, podéis dirigiros a la recepción en la planta 6C o seguir las instrucciones de acceso del edificio).* Muchísimas gracias a nuestro sponsor **[Plain Concepts](https://www.plainconcepts.com/)** por acogernos en su espacio y 🍲 🍕 🍴🥤🧃. ¡Nos vemos allí!

April Meetup is here! Let's gooo! We have some amazing speakers, and of course pizza and drinks will be available after the event. ────────── **18:30: Welcome** Grab a drink, and a seat until everybody arrives! **18:45 Intro by Host Neciu Dan** **19:00 Type safety across the network chasm** Speaker: [Alexander Vechi](https://www.linkedin.com/in/alvechy/), Product Engineer at SkyScanner Type safety often stops at the network boundary. In this talk, Alex will look at how modern frameworks try to bridge that gap, and share lessons from Skyscanner’s setup with protobuf-generated TypeScript types, including versioning, nullability, and validation to make API contracts safer in real frontend code. **19:25** **Building a Workflow Builder From The Ground Up** Speaker: [Martí Serra Molina](https://www.linkedin.com/in/ACoAADubmLMBJy_b_UNaB8Za17gbj1sc69JgkcY/?lipi=urn%3Ali%3Apage%3Ad_flagship3_profile_view_base%3BBKaAifpsSFG5%2BC062yD%2Blw%3D%3D) Frontend Engineer \| Creator of Formity Workflow builders are powerful tools for visually designing and automating complex processes, but building one from scratch in React poses unique challenges. Most teams reach for React Flow to handle node-based diagram rendering, yet there is still significant logic to build on top of it — a node layout algorithm, workflow state modeling, drag-and-drop, undo and redo, and more. In this talk, you will learn how to build a workflow builder from the ground up and the real-world complexities that emerge along the way. **19:50: Drinks and networking!** Do you want to talk at this meetup? Reach out to Dan Neciu [on LinkedIn](https://www.linkedin.com/in/neciudan/) And please help us spread the news and grow the community: **20:55 Meetup finished** **(FOR EARLY ACCESS: WE ALWAYS POST FIRST ON SOCIAL MEDIA)** [Twitter(X)](https://x.com/ReactJsBCN) [BlueSky](https://bsky.app/profile/reactbarcelona.bsky.social) [LinkedIn](https://www.linkedin.com/company/reactjs-barcelona/) [Instagram](https://www.instagram.com/reactjs_barcelona/) ────────── **Sponsors:** Skyscanner 🌎 We're here to help every traveller explore the world effortlessly, with a vision to become the world's number one travel ally. ────────── **Join the Master Security Course for FREE!** Modules 1 & 2 are live now — **Exploits and XSS** — completely free to access. * Understand how common vulnerabilities actually work * Learn to identify and prevent security flaws in your code * Get practical, real-world examples you can apply immediately * Types of XSS + real case studies of XSS in ReactJS and more This is just the beginning — start building security expertise today. [Join here](https://neciudan.dev/master-security)

AI is changing how art is made. But when does it stop being your work and start being the machine’s? This month we're going to be doing a panel with with digital image, music, and written word artists, talking about at what point, while using AI in the creation process, does the work become not the artist creation? We encourage audience participation during this event that will be moderated by Chris Slee. Whether you’re deep in the field or just getting curious, come connect with others building and exploring AI in Columbus. Sponsored by [Transform Labs](https://www.transformlabs.com/services)

We are excited to host Guided Meditations on Sundays at 6 pm in our Ashram/Gallery/Home! !! !! Everyone wants to know what kind of God we worship and what kind of meditation we do. We worship the GOD that LOVES US! We understand that god is an energy and it lives in us as us. Our meditations guide others to actually experience that energy! xoxo We don't just talk about peace, love and affection, we experience it :) Also we are a home not a business, so we enjoy building community one friend at a time. We always build in time for people to mingle & develop friendships! xoxo Much Love, Frank Tennyson Namaste, Frank Tennyson http://photos3.meetupstatic.com/photos/event/a/f/9/9/600_447824953.jpeg

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** GitHub Copilot is powerful, but what if you could scale from a solo AI assistant to an entire team of specialized agents working in parallel? This session introduces Squad: an open-source framework for multi-agent orchestration that lets you define teams of AI agents with specific roles, responsibilities, and expertise. We'll progress from Copilot basics to the Copilot CLI, explore how Agents add autonomy, and see how Instructions and Skills let you customize agent behavior. Then, the climax: a live demo where a Squad team of 3 agents (Lead, Developer, Tester) stands up and builds a working application in real-time, showcasing true multi-agent collaboration. Whether you're new to AI or exploring how to scale your use of Copilot, this session will show you what's possible when agents work as a team. **YouTube Link** TBD

Rev. Steven Clevenger is an ordained spiritualist minister with over 40 years experience as a Spiritual Healer, Clairvoyant and Spiritual Teacher, educated and trained at the White Lily Chapel. Rev. Siobhan Wolf Shaffer is an ordained spiritualist minister and certified medium and healer with over 20 years experience. She began her development in 1988 in Pennsylvania and continued when she moved to Ohio in 1998 where she studied at Rays of Lights Church with Rev. Steven Clevenger. Our full worship services consist of an inspirational lecture, healing meditation, and messages from the spirit world that serve to demonstrate evidence of eternal life. Please visit our Official Church Website (http://raysoflightchurch.com) for more information.

Pay attention! We’re delaying a week for those of you who may be on Spring break and/or celebrating the holiday. Ok, no pancakes, but waffles-a-plenty. Join the local UX and Digital Design community for a casual monthly breakfast. Look for us upstairs!

We'll meet at The Capital One Café, 167 Easton Town Center, Space A-103. This is in the main mall where the Microsoft store used to be, on your left if you're standing at the bottom of the AMC Theater escalator. Join us on Saturday for an hour of uninterrupted wordmaking! • What we'll do Join us for an hour of writing! We’ve discovered that it’s strikingly helpful to write with other writers. See if it’s true for you at 10AM on Saturday mornings. Be it a book, blog, script, essay, dissertation, resume, melody, poem or just plain work stuff, you are invited to write it with us. No one will see what you've written or give you unsolicited advice. Instead of just thinking about writing, come and get some real writing done. SCHEDULE: 10:00 - SESSION 1: quick intros. 10:10 - timer starts: write for 1 hour. 11:10 - chat / take off / keep writing. OPTIONAL SOCIALIZING happens at 11A-11:30ish. Writing is very solitary. Connecting (and sometimes even commiserating) with other writers is a cool thing. BEING LATE IS OKAY: just show up and get settled, then check-in with me after the session. (I’ll be the person with the Shut Up & Write! sign.) If you were on time, please be willing to make room for the friendly latecomer. Happy writing and I look forward to seeing you! • What to bring Whatever you need to be able to write! Bring earbuds/earplugs if you want to block noise or the occasional conversation by other patrons. Electrical outlets are limited, so charge your devices before whenever possible. See you at The Café on Saturday!

The Fellowship of the Star Schema: Transforming OLTP Data for Power BI One does not simply build reports on OLTP data. Join us on an epic journey from the depths of raw, normalized tables to the shining halls of a well-modeled star schema fit for Power BI greatness. We will demystify the differences between OLTP and OLAP, walk through star schema vs snowflake (and why Power BI has a clear favorite), and show you the compression differences between normalized and columnar storage that will make you never look at an OLTP model the same way again. We will cover the different types of dimensions, when to use them, and how to handle Slowly Changing Dimensions without losing your mind. You will leave knowing exactly how to identify a bad model, how to convert OLTP data into a clean star schema, and how to forge relationships that rule them all. Whether you are a data wizard, a curious hobbit, or somewhere in between, your models will never be the same.