Data Visualization

[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 back to run ! We will meet by the Magic Fountain (Font Magica de Montjuic (https://goo.gl/maps/RWPuTcn8htM2)) - Plaça de Carles Buïgas at the end of the first stairs - just 2 minutes walking from placa Espana towards Museu Nacional d'Art de Catalunya. We'll decide the route on the day.. or just follow Olivier... ;) We'll meet at 7:00pm but we'll start running at 7:05pm. Please be on time. Normally we do about 8-10kms in an hour during which we climb to the castle at the top of Montjuic. The accumulated elevation is about 300m depending on the route. Note that this is *NOT* a beginner's run. It can be quite challenging. We recommend that you only join this run if, on a flat course, you can do 10km in 50mins or less or really like running up hill! If not it might be better to first start with one of the beach runs on Tuesday or Thursday. Starting from October it is getting dark pretty early and not all the streets of the route have lights. If you have a headlamp please bring it with you but it is not mandotory. Let´s do the entire route together and after the training we can go as usual for a fresh drink at a bar nearby *** De vuelta en el Montjuic ! Quedamos en la Plaça de Carles Buïgas (donde está la Font Magica de Montjuic), exactamente aquí (https://goo.gl/maps/RWPuTcn8htM2), al lado de la barandilla que está al final de las primeras escaleras. Si vienes desde plaça Espanya, son 2 minutos caminando en dirección al Museu Nacional d'Art de Catalunya. Cada lunes hacemos un recorrido distinto por Montjuic que decidimos en el mismo día… o sencillamente seguimos a Olivier… ;) Nos encontramos a las 7:00, y empezamos a correr a las 7:05. Normalmente hacemos más o menos 8-10 km en una hora, subiendo hasta el castillo en la cima de Montjuic, con un desnivel positivo total de cerca de 300 metros. Es un entrenamiento exigente aunque accesible si ya tienes algo de experiencia corriendo. No está hecho para debutante. Por favor apúntate solo si puedes correr 10km en 50 minutos mas o menos. De octubre a mayo el recorrido es de noche por lo que es recomendable llevar frontal, aunque si no tienes, no hace falta. Realizamos todo el recorrido juntos y después del entreno solemos ir a tomar algo a un bar cercano. Monday is Montjuic track example https://www.strava.com/activities/926870931 https://www.strava.com/activities/5431087155 https://www.strava.com/activities/5275162408 OIivier

Únete a nuestra clase de bachata para principiantes 💃✨🕺 Cada lunes de 20 a 21 horas (Parc Joan Miró, Barcelona, al lado de la estatua “Dona i Ocell”) Cada semana aprenderás nuevos movimientos y técnicas para mejorar tu baile social! La clase será en español, pero también podemos responder tus preguntas en inglés, francés, italiano, y noruego! Después de la clase, si lo deseas, puedes quedarte para una pequeña sesión social para practicar los movimientos, hacer preguntas y recibir feedback! **CLASE DE PRUEBA GRATUITA!** Clases regulares: 10 € por clase o 30 € al mes. PAGO EN EFECTIVO Más información y videos de clases anteriores: [https://emilorenzo.com](https://emilorenzo.com) Instagram: @emi.bachata YouTube: [https://youtube.com/@emi_lorenzo](https://youtube.com/@emi_lorenzo)

Ciao! Para **este lunes festivo** volvemos a pasear por el **antiguo** **camino agrario que une Mataró a Sant Andreu de Llavaneres**. Un itinerario fácil y sin dificultad técnica que nos llevará, sin prisas, a cruzar una tranquila zona agrícola con vista al mar. Haremos una **parada en la playa de Sant Andreu de Llavaneres** para descansar, disfrutar del mar y, para l@s mas temerari@s , darnos un baño 🏊‍♂️🏊‍♀️. Después retomaremos el camino siguiendo el **paseo marítimo** hasta **Caldes d’Estrac**, para hacer el picnic en la playa y, con quien le apetezca, daremos un **último paseo por el pueblo**, con tiempo para tomar un café, antes de **coger el tren de vuelta**. No olvides traer algo para hacer **picnic mirando al mar** 😎 🧺 (bocadillo, agua o lo que prefieras) y protección para el sol (gorra, crema, agua, para beber, etc.) . Yo, como siempre, **traeré** algunas **sorpresas gastronómicas para compartir y deleitar el encuentro**.👨🏻‍🍳 Itinerarios Curiosos es una experiencia de **paseo consciente** ( mindful walking) : paseos para improvisar, para dejarse llevar por la creatividad, la aventura; romper con la rutina diaria para redescubrir la lentitud, estimular la curiosidad, aprender de lo que nos rodea y llenar los ojos y también los otros **sentidos** de **nuevas experiencias**. ¿ Eres curios@ ? Apúntate! **En Itinerarios curiosos, la escucha y la relación entre los participantes es de suma importancia; por eso, preferimos mantener los grupos pequeños, lo que nos permite crear un ambiente íntimo y acogedor.** 🍀La aportació voluntaria mínima para este evento son **15€ (o 10€ con suscripción\*) por personas (preferiblemente en metálico)** y se efectúa al comienzo del paseo. Esta aportación incluye **organización y gestión del evento** + **sorpresas**. Tu aporte es fundamental para que pueda continuar ofreciendo experiencias como estas.🙏 **💥Novedad💥** **\*Suscripción Mindfulness Walking**: La aportación será solo de 10€ adquiriendo **bono de 5 Itinerarios Curiosos** (efectuando ingreso de **50€** via **bizum** al 671153910 con concepto “**Mindfulness Walking 2026** ” ) La suscripción permite participar en **5 Itinerarios Curiosos de 2026**, siempre que la aportación sea **igual o inferior a 15 €**. **💥💥💥** El recorrido es fácil y semiurbano pero **se recomienda venir con calzado adecuado para ir cómodos por los tramos de pista de tierra y tener un mínimo de condición física** ( hay que **andar** unos **13 km** y subir unos 80 metros de desnivel más o menos. Duración prevista del recorrido a pie : alrededor de 3h con algunas paradas incluidas ). ✨ **Te sugiero venir sin expectativas, para dejarte llevar y quizás sorprenderte a ti misma con la belleza de las cosas más sencillas.** ✨ TREN: para **la ida** cogeremos **el tren que sale de Barcelona Plaza Catalunya a las 9.30** ( llegada a Mataró a las 10.12 h) . Para la vuelta hay trenes cada media hora. Encárgate por favor de **tener tu billete preparado**. Te aconsejo comprar la tarjeta recurrente de Renfe [https://www.renfe.com/es/es/grupo-renfe/sociedades/renfe-viajeros/abonos-renfe/abonos-rodalies-catalunya](https://www.renfe.com/es/es/grupo-renfe/sociedades/renfe-viajeros/abonos-renfe/abonos-rodalies-catalunya) ⚠️**Por favor confirma tu asistencia con mínimo 1 día de antelación** siguiente número: [+34671153910](http://tel:+34671153910) 💬 Whatsapp/ Telegram Y además, para estar al tanto de mis próximos eventos, te invito a : \- Unirte al canalé de Telegram : [@itinerarioscuriosos](https://t.me/itinerarioscuriosos) \- seguir : @[ItinerariosCuriosos](https://www.instagram.com/itinerarioscuriosos/) @[travelcook](https://instagram.com/dj_masa_travelcook?igshid=MzMyNGUyNmU2YQ%3D%3D&utm_source=qr) \- echar un vistazo a estos enlaces para saber más sobre mi y la filosofía de Itinerarios Curiosos : [http://www.travelcook.es/sobre-mi/](http://www.travelcook.es/sobre-mi/) [http://www.travelcook.es/itinerarios-curiosos/](http://www.travelcook.es/itinerarios-curiosos/) ☝️Todo el que participe es responsable de sí mismo y de su propia seguridad. Al participar, aceptas estas condiciones☝️

La propera trobada de la colla **[Treu la llengua (de l'armari)](https://www.treulallenguadelarmari.cat/), de Barcelona,** grup de conversa LGTBI+ en català, serà al bar **Moeem** el dilluns 6 d'abril a les 19:30 h. Els **NOUS PARLANTS sou especialment benvinguts** per practicar la llengua amb nosaltres. Animeu-vos a venir-hi. Es punxaran també **hits en català**! The next LGTBI+ meet-up of the **[Treu la llengua (from the closet)](https://www.treulallenguadelarmari.cat/)** group from **Barcelona**, group of conversation in Catalan language, will take place at the **Moeem** bar, on Monday 6th March at 7.30 PM. **NEW SPEAKERS are particularly welcome** to come and practice the language with us. Come and join us! **Hits in catalan** will be played as well! El próximo encuentro del grupo **[Treu la Llengua (del armario)](https://www.treulallenguadelarmari.cat/) de Barcelona**, grupo de conversación LGTBI+ en catalán, tendrá lugar en el bar **Moeem**, el lunes 6 de marzo a las 19:30 h. Los **NUEVOS HABLANTES sois especialmente bienvenidos** a practicar la lengua con nosotros. Animaos a venir. Se pincharán también **hits en catalán**! La prochaîne rencontre du group **[Treu la Llengua (du placard)](https://www.treulallenguadelarmari.cat/) de Barcelone**, group d'entretien LGTBI+ en catalan, va se tenir au bar **Moeem** lundi 6 mars à 19h30. **Les NOUVEAUX LOCUTEURS, vous êtes spécialment bienvenus**, pour mener à bien la pratique de la langue avec nous. Venez nous rejoindre. On jouera aussi des **hits en catalan**!

Tips for a great event Be descriptive A good title immediately gives people an idea of what the event is about. Get organized Describe things in a clear order so it's easy to digest. Start with an overall description of the event and include a basic agenda, before you move into really specific details. Add an image Upload a photo or image to give members a better feel for the event.

Serie de talleres grupales donde exploraremos paso a paso, taller a taller, distintas técnicas de desbloqueo creativo y de potenciación de posibilidades expresivas propias, la hora de dibujar, realizar una obra plástica, o algo inesperado. Puedes traer tu propio material, o... ¡Improvisar!

Save your seat at the first 2026 dbt Barcelona Meetup! Join us on Thursday 9th April at 18:00 for an exciting edition of this community event. dbt Meetups are networking events open to all folks working with data! Talks are given by different members of the community, who share their experience on topics ranging from analytics engineering, data stacks, data ops, modeling, testing, and team structures. **This event is limited to 60 people, so please only RSVP if you intend to come** and reach out to hosts via email (ronyekwe@spauldingridge.com) if you need to cancel last minute or change your RSVP status on the Meetup page to "Not Going." 🏠**Venue:** IFCO Digital Hub, Ciutat Vella, 08039 Barcelona 🍕**Catering:** Pizza & Beers\*\* 🤝**Community Organizers:** Ruth & Miquel **⏰ Time:** 6:00pm - 9:00pm \**To attend, please read the Health and Safety Policy and Terms of Participation*: [https://www.getdbt.com/legal/health-and-safety-policy](https://www.getdbt.com/legal/health-and-safety-policy) \*\* If you have special requirements, please contact the organizers. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- 📣 Agenda and additional details below: * **6:00pm** Check in/Registration * **6:30** Welcome Remarks * **6:40 - 7:00** Talk #1 + Q&A * **7:00 - 7:30** Talk #2 + Q&A * **7:30 - 8:50** Discussion Forum & Closing remarks * **8:00 - 9:00pm** Reception & Networking (socializing, light food and refreshments 🍷 🍺 🧀 ☕ 🥤) ✨ Speaker Lineup✨ **#Talk 1** **Fusion and dbt News** by Álvaro Martin, Solution Architect @ dbt Get the latest product and roadmap updates from dbt and hear experiences from global users of Fusion and more. **#Talk 2** **Scaling data architecture for Big Data and IoT** by Carla Regueira (Product Manager), Álvaro Picatoste (Business Data Analyst), Daniel Díaz (Senior Data Engineer) @ IFCO: The IFCO Digital team will present how they build KPIs for stakeholders and manage large data volumes. This will lead into an **open discussion forum** where guests can share their approaches and experiences with managing large-scale data using dbt. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- ➡️ Join the dbt Slack community: [https://www.getdbt.com/community/](https://www.getdbt.com/community/) 🤝For the best Meetup experience, make sure to join the #local-barcelona channel in dbt Slack ([https://slack.getdbt.com/](https://slack.getdbt.com/)) Spaulding Ridge's Data Team focuses on optimizing data analytics platforms and IT infrastructure; promoting a data-driven culture and achieving success through data informed decisions. Connect with the local team here ➡️ [https://www.spauldingridge.com/business-transformation/data-analytics/](https://www.spauldingridge.com/business-transformation/data-analytics/)

💃🕺💃🕺💃🕺💃🕺💃🕺💃🕺💃🕺💃🕺 ‼️‼️‼️‼️**VAMOS A BAILAR** ‼️‼️‼️‼️ Tal vez la mejor manera de hacer nuevos amigos, pasar tiempo en buena compañía con buena música y aprender algo nuevo! No pierdas la oportunidad de aprender a bailar LA DANZA MÁS POPULAR DE EUROPA ✨✨✨✨✨✨**BACHATA**✨✨✨✨✨✨ ‼️Todo lo que necesitas es un poco de GANAS con todo lo DEMÁS te AYUDARÉ‼️ Soy Pavel Solvev vice campeon de bachata sensual 2023 Te explico todo desde principio ✅Los pasos basicos ✅Técnica ✅Musicalidad ✅Los combinaciónes de muvimientos Explico en 🇷🇺🇬🇧🇪🇸 [Group WhatsApp ](https://chat.whatsapp.com/JzsGCffpnpM3dznmEMKax5) [Location ](https://maps.app.goo.gl/guBUfm1WB8KdbVj26?g_st=ic) [Telegram group ](https://t.me/bachata_bcn) 💃🕺💃🕺💃🕺💃🕺💃🕺💃🕺💃🕺💃🕺💃 ‼️‼️‼️‼️‼️☺️ТАНЦУЮТ ВСЕ ☺️‼️‼️‼️‼️‼️ Пожалуй лучший способ завести новые знакомства, провести время в хорошей компании под отличную музыку в классной дружеской атмосфере и научиться чему то новому! Не упустите свой шанс научиться танцевать САМЫЙ ПОПУЛЯРНЫЙ В ЕВРОПЕ ТАНЕЦ ✨✨✨✨✨✨BACHATA✨✨✨✨✨✨

¡Barcelona se prepara para **[GrafanaCON 2026](https://grafana.com/events/grafanacon/)**! Por primera vez, el evento aterriza en nuestra ciudad del 20 al 22 de abril y queremos celebrarlo junto a la comunidad local. Durante el meetup, sortearemos 3 entradas 🎟️ entre quienes nos acompañéis. ¡Una oportunidad de oro para asegurar vuestro lugar en el evento del año! Te esperamos en **[Schwarz Digits Spain](https://www.linkedin.com/company/schwarz-digits-spain/)** para compartir charlas, novedades y mucho networking. 📍Ubicación: c/ Bergara 13\, Barcelona \| [https://maps.app.goo.gl/zd6h3BGzHNxgAgjT6](https://maps.app.goo.gl/zd6h3BGzHNxgAgjT6) 📅 Agenda: **18:30:** Bienvenida 👋 **18:45:** 🎙️ **"Desmontando el mito: ¿Es seguro nuestro ecosistema Open Source?"**, [Nuria Revuelta](https://www.linkedin.com/in/nuria-revuelta-yus-143332123/) \- Account Executive en [Grafana Labs](https://grafana.com) Charla que explora los principales mitos sobre la seguridad del Open Source, analizando qué hay de cierto y qué no en las percepciones más comunes. También abordaremos cómo implementar buenas prácticas para garantizar un entorno de trabajo seguro utilizando OSS. **19:15:** 🎙️ **“Cómo crear un sorteo interactivo con Grafana usando el Infinity plugin”** [Imma Valls](https://www.linkedin.com/in/imma-valls/) \- Staff Developer Advocate en [Grafana Labs](https://grafana.com) En este rato vamos a montar un dashboard en directo que lea las respuestas del formulario de participación en el sorteo de entradas con el plugin Infinity. Visualizaremos algunos datos (no privados!) y configuraremos un panel que elija aleatoriamente y de forma transparente a 3 ganador@s de las entradas. Sin bases de datos, solo Grafana y un Google Sheet. **20:00 - 21:00:** Networking con pizzas y bebidas 🍻🍕 ¡Nos vemos allí! 👋 Grafana & Friends Barcelona.

🔧 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

Join us for an evening dedicated to **practical AI applications**, where we’ll explore how to build intelligent agents and harness the power of vector search. Whether you’re a developer, data enthusiast, or simply curious about AI, this meetup is a great opportunity to learn, connect, and have fun with the community. **Agenda** **6:30 PM – Welcome, Registration & Meet and Greet** Arrive early, grab your badge, and connect with other AI enthusiasts before the sessions begin. **7:00 PM – Running a RAG locally** Learn how to build and run Retrieval-Augmented Generation (RAG) systems entirely on your local environment, ensuring privacy, control, and reduced latency. **7:30 PM – MongoDB MCP** Discover how MongoDB integrates with the Model Context Protocol (MCP) to enable scalable, real-time data access for AI applications and agents. **8:00 PM – Long-term memory for agents** Explore strategies and architectures to equip AI agents with long-term memory, enabling more consistent, context-aware, and personalized interactions. **8:30 PM – Pizza, Networking, Swag & Closing** Enjoy some pizza, grab exclusive MongoDB swag, and continue networking with the community. **Sessions** **Title: Running a RAG locally** **Summary:** In this session, we will walk through how to design and deploy a Retrieval-Augmented Generation (RAG) system running fully on local infrastructure. We’ll cover key components such as embeddings, vector databases, and local LLMs, and discuss trade-offs between performance, cost, and privacy. Attendees will gain a practical understanding of how to build secure and efficient AI systems without relying on external APIs. **Title: MongoDB MCP** **Summary:** This talk introduces MongoDB’s role within the Model Context Protocol (MCP) ecosystem, enabling AI models and agents to interact seamlessly with live data. We’ll explore how MCP standardizes communication between models and tools, and how MongoDB can be used to store, retrieve, and manage structured and unstructured data in real time. Practical use cases and integration patterns will be demonstrated. **Title: Long-term memory for agents** **Summary:** As AI agents become more sophisticated, the need for persistent and meaningful memory becomes critical. In this session, we will explore different approaches to implementing long-term memory, including vector-based memory, structured storage, and hybrid architectures. We’ll also discuss challenges such as memory retrieval, relevance, and scalability, and how these impact real-world agent performance. **Important:** This event will be held in Spanish / Este evento se realizará en español

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)

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.

**The Data-Driven Brand: Using Analytics to Shape Perception** Can you use analytics to improve tacos? This being CBUSDAW, we think the answer is probably “yes”, but we’re not sure how to implement or test this theory. For our April meetup we’ve got Sara Kear, CMO of Condado Tacos, to investigate this delicious question. Sara will explore how she blends quantitative data and qualitative customer feedback to shape brand positioning and drive business decisions. We all know that marketing and analytics go way beyond attribution. Sara will show how Condado uses customer insights to inform product and pricing strategy. She’ll also highlight how Condado leverages customer feedback at scale to influence operational priorities, positioning marketing as the voice of the customer across the organization. In the last 12 years Condado has gone from one location in Columbus to 52 locations across 10 states, so we’re guessing there’s more to that growth than really good guac (though the guac probably helps). Ultimately, this talk focuses on the intersection of art and science—using data to inform creativity and build a brand that resonates with customers in a measurable way. **About Our Speaker** Sara Kear is Chief Marketing Officer at Condado Tacos, where she oversees brand, restaurant design, menu and pricing strategy, off-premise including catering, and customer data strategy. Since joining in 2021, she has helped grow the brand from 19 to 52 locations while building a data-driven marketing organization focused on loyalty and customer insights. Condado has since been named to the Inc. 5000, recognized as Breakout Retailer by Chain Store Age, and consistently ranked among FastCasual’s Top 100 Movers & Shakers. Thanks to our 2026 sponsors: [Clarivoy](https://www.clarivoy.com), [What Box Consulting Group](https://www.whatboxconsultinggroup.com), [Conductrics](https://www.conductrics.com), and [Piwik PRO](https://piwik.pro) More info at [cbusdaw.com](https://cbusdaw.com)

The April Ohio North Database Training user group meeting will be held on **April 7th, 2026 at 5:00PM**. This will be a **HYBRID** event and we will be joined online by **Kayla Boor**. You're welcome to come meet in-person at our meeting location, the offices of Improving at **[6000 Freedom Square Dr,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Unit 110,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Independence, OH 44131](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** [Teams Link ](https://teams.microsoft.com/meet/22562814501129?p=w1cSxeUXFTVeIpZiMw)if anyone needs it after RSVP-ing for in person. If you would like to subscribe to our email list outside of Meetup, we have changed platforms recently and you will need to register [here in Kit ](https://ohio-north-data-training.kit.com/b8f036f615)instead to receive emails. Agenda: **5:00 PM EST**: Online and in-person meeting begins with a social hour. This is an unstructured hour where you can join us to catch up and meet other group members before the session starts. There will be food brought in for in-person attendees. **6:00 PM EST**: Updates and announcements, followed by our feature presentation. See below for presentation details. **7:30 PM EST**: Optionally after the main presentations, the in-person crowd may go out for snacks and drinks at a local establishment. We hope to see you there! Session Abstract **Accidental friends: How a DBA and an SRE worked together to optimize the system.** This session is focused on how to communicate effectively between teams to improve alert fatigue, performance, and observability. \*\*NEW SPEAKER \*Please note, that we will be using Microsoft Teams for the online portion of this meeting. You may want to join a few minutes early to ensure you do not have any issues. If you are attending in person, there are large TVs at the office, and you do not need to bring a laptop or use Teams.

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)

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!

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm

NFT's are here to stay folks! This is a group for like minded people interested in understanding, leveraging, using, creating for, profiting from, trading too i suppose, NFT's.. everything around them, complexity, fear and exploits, best practices and more. **PLUS** This group will talk AI ART tools, techniques, artists, video, audio, prototypes and more in the AI assisted production space- ART specifically, but we can get into any aspect of some of the cooler things happening in AI in general.