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Data and AI only matter when they drive and inform real product decisions that improve learners’ and tutors’ experience. At [Preply,](https://preply.com/en/about-us) we use data, rigorous experimentation, careful and scientific measurement, and applied AI to understand what works, where it works, and why. In this meetup, Preply’s data and AI team members will share concrete case studies from systems running in production, focusing on impact measurement, AI-driven marketplace decisions, and machine learning applied to real learning interactions. You will also have the chance to meet with Preply’s recruitment team to understand open roles in our growing data squad, and learn about which role is the best fit for you **Agenda:** **18:30-19:00** Arrival and Networking **19:00-19:05** Introduction, Ana Peleteiro Ramallo (VP of Data and Applied AI) **19:05-19:25** - **Preply Lens: Building AI Systems to Understand Learning**, Aditya Joshi (Senior Data Scientist) **19:25-19:50** - **Measuring Product Impact**, Jonny Adams (Staff Data Scientist) & Frieder Kropfhäußer (Staff Data Scientist) **20:00-20:20** - **How AI Improves Preply’s Marketplace,** Jacek Wasilewski (Principal Applied AI Scientist) **20:20-21:00** \- Drinks and Networking **Who should attend:** This meetup is designed for data and AI professionals, especially those with hands-on experience in industry delivering products. *After the talks, we’ll leave time for questions and open discussion, followed by informal networking with the speakers and other attendees We’re looking forward to meeting you. Bring your questions, your opinions, and your healthy skepticism – the discussion is very much part of the meetup.*

**Join Us for a Product Design Networking Meetup at Barcelona!** Are you passionate about product design? Looking to connect with fellow designers, share ideas, and showcase your latest work? Then this is the event for you! Enjoy a relaxed evening of networking with some minds in the industry while sipping on craft beers from Brewdog. Whether you're an experienced product or design person or just getting started, this is a great opportunity to exchange ideas, find inspiration, and build valuable connections. Come prepared to share! Join our WhatsApp Group at: [https://chat.whatsapp.com/LwFwk4uQTLw526t9mNdMtG](https://chat.whatsapp.com/LwFwk4uQTLw526t9mNdMtG)

[Join our new Whatsapp Group for the latest updates!](https://chat.whatsapp.com/ELiOKSbxIn99mRuydBOKqm) ### Practical information * The class is **completely free** * The class is taught **in English** * Please RSVP so we can keep the group balanced * The class will start at 18:00, so **please be punctual** This **free beginner salsa class** is perfect if you want to learn **Salsa LA style & Cuban**, try dancing for the first time, and meet new people in a relaxed and friendly setting. Whether you’ve just moved to the city, are looking to make new friends, or simply want to start dancing, this class is designed to be easy, social, and pressure-free. *No previous dance experience needed.* *** **What you will learn** * What makes salsa special and how to dance to the music * Basic salsa steps * How leading and following works * Cross body lead and basic turns The focus is on learning the fundamentals while enjoying the social side of dancing. *** **Who this class is for** * Absolute beginners * People new in town * Anyone curious about salsa * Anyone looking to meet people through dance You can come **alone or with a partner**. We rotate partners when exercises allow it, so everyone gets a chance to practice and connect.

Nuestra nueva web: [https://www.patreon.com/singlesbarcelona](https://www.patreon.com/singlesbarcelona) ❤️CONSTRUYENDO EL MAYOR CHAT SINGLE DE BCN. COLABORA Y HAZ NUEVAS AMISTADES. PARTICIPA EN LOS CHATS DE LAS ACTIVIDADES QUE MÁS TE INTERESAN Y TAMBIÉN PROPÓN NUEVAS IDEAS. GRACIAS POR CONSTRUIR ACTIVIDAD SOCIAL PARA HACER NUEVOS AMIGOS Y AMIGAS. ESTE SUBGRUPO SE ORGANIZA A TRAVÉS DE UN CHAT 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)

**Multicultural Salsa & Bachata in Barcelona presenta:** **Cada Miércoles** tendremos un evento con clases gratuitas de Salsa y Bachata nivel abierto con nuestro instructor Argentino Emmanuel quien se encargaran de animar la noche con su gran carisma y simpatía además de sus animaciones espectaculares, tendremos el siguiente programa: 21:00 hrs: Apertura de Puertas. 21:15 hrs: Clase de Salsa 22:00 hrs: Clase de Bachata 22:30 hrs Baile Social. * Puedes venir sol@ siempre encontrarás con quien bailar, pero siempre es mejor con compañía de tu pareja de baile, y amig@s. * Las clases son gratis pero se ruega su cooperación para colaborar con El Sabor Cubano, el lugar con el mejor mojito de Barcelona y el mejor ambiente latino en Gracia **Ubicación: Sabor Cubano de Gracia, Carrer de Francisco Giner 32, metro L3 Diagonal** Informes al +34633333173, únete a nuestro grupo de Whatsapp para recibir más información de nuestros eventos: https://chat.whatsapp.com/9DYjrIu28yh1em2R8AVcvU, FB: @multisalsabcn , Instagram: https://www.instagram.com/multicultural_salsa_bcn/ \**///////////ENGLISH DESCRIPTION\\\** **Multicultural Salsa & Bachata in Barcelona presents:** **Every Wednesday** we will have a special event with free Salsa& Bachata lessons by instructor Emmanuel from Argentina who will be in charge of animating the night with his great charisma and sympathy including nice animations, We will have the following program: 21:00 hrs: Doors open. 21:15 hrs: Salsa class 22:00 hrs: Bachata class 22:30 hrs Social Dance. * You can come alone, you will always find someone to dance with, but it is always better with the company of your dance partner, and friends. * Classes are for free but your cooperation is requested to collaborate with El Sabor Cubano, the place with the best mojito in Barcelona and the best Latin atmosphere in Gracia **Location: Sabor Cubano de Gracia , Carrer de Francisco Giner 32, m Diagonal L3, Gracia.** Contact&info at +34633333173, join our WhatsApp group to receive more information about our events: https://chat.whatsapp.com/9DYjrIu28yh1em2R8AVcvU, FB: @multisalsabcn, Instagram: https://www.instagram.com/multicultural_salsa_bcn/

ProductTank Barcelona community! TLDR; **bring your laptop!** Ready to build something amazing without writing a single line of code? Join us for an AI-powered hackathon where you’ll create an app using **Lovable** – the no-code platform that turns plain prompts into real products. This is a hands-on excuse to meet other product people, experiment with AI, and see what happens when you build in small groups. How it works: * We’ll form small AI building groups – no need to come with a team. * Each group will collaborate to build an app and share it at the end - **laptop required, one per team**. * The product brief will be revealed at the start – no prep required! * All Lovable credits are covered – no fees involved. * No coding or AI experience needed. This is beginner-friendly and product-minded. Since spots are limited, please RSVP **only if you’re sure you can commit**. In particular, if you’ve volunteered to bring a laptop, we’re counting on you. This will be an interactive, high-energy event – not a sit-down lecture. **Location:** eDreams ODIGEO, Barcelona **Time:** Doors open at 6:30 PM \| Event starts at 6:45 PM Don’t forget to bring a valid ID to enter the venue. Expected agenda: * **6:30pm - Open door** * **6:45pm - 7:00pm – Welcome + Hackathon brief** * **7:00pm - 7:45pm – Team pairings + Build time** * **7:45pm - 8:00pm – Finalist demo, voting and prizes** * **8:00pm onwards – Pizza & Drinks for networking** Come for the build. Stay for the people. This is networking, just with a bit of AI chaos in between.✨

You thought we would skip February? NO! We're back, baby! February Meetup is here! Let's gooo! We have some amazing speakers, and pizza and beer will be available after the event. ────────── **18:30: Welcome** Grab a beer, a snack, and a seat until everybody arrives! **18:45 Intro by Host Neciu Dan and Giorgio Polvara from Perk** **19:00 The 2600€ Mistake: How we saved 90% on Cloud Costs by breaking the SSR Myth** Speaker: [Danilo Velasquez](https://www.linkedin.com/in/ACoAAAXUQZYBfPgAdfwWiNG72HHc5rtHIS9pAWY), Staff Web Platform Engineer and Consultant When our Astro/React migration reached 8,000 RPS, 100 pods couldn't prevent the crash loops. Discover how mastering Node.js internals—Cluster API, file descriptors, and strict timeouts—slashed our bill from 2,850€ to 250€ while handling 1.6B monthly views. A war story about why "frontend-only" thinking fails on the server. **19:25 400 Tech Leads. Same problems. None of them technical.** Speaker: [Anemari Fiser](https://www.linkedin.com/in/ACoAAAsj0FIBwsd5kRTr2_wWLQKe-vFNZDCtNlE)\, O’Reilly Author \| Engineering Leader After training and coaching more than 400 tech leads across companies and industries, one pattern keeps repeating: when tech leads struggle, it’s rarely a technical gap. In this talk, Anemari Fiser shares the most common challenges tech leads bring into coaching sessions - overload, unclear expectations, ownership confusion - and assumed alignment, and why “getting better technically” almost never fixes them. Drawing from real coaching and training examples, the talk explores where tech leads get stuck, what they think the problem is, and the small but meaningful shifts that help them move forward. **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:** **Perk** The intelligent platform for travel and spend. Time-consuming bookings, endless approvals, hundreds of receipts: Perk is designed to eliminate the work behind the work that is costing your business trillions and draining your teams' morale and productivity. At Perk, we call it shadow work. By automating bookings, expenses, and invoice processing, Perk takes care of shadow work so your teams can get down to business—all while keeping you in control. Founded in 2015, we’re trusted to power real work for over 10,000 companies worldwide, including Wise, On Running, and Breitling, and are backed by first-class investors such as SoftBank, Kinnevik, Felix Capital, Target Global, LocalGlobe, Spark Capital, and Noteous Partners. Work with Perk, and unlock the full potential of your people and your business. ────────── **Join the Master Security Course for FREE!** Module 1 is live now — **Exploits** — 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 * 9 more modules coming, covering the full security landscape This is just the beginning — start building security expertise today. [Join here](https://neciudan.dev/master-security)

Round two. Same chemistry. Stronger energy. Barcelona tried to interrupt us… cute… We’re back and this time theres no stopping what’s coming 26 February ⏰ 20:30 – 23:30 Bonavida, Barcelona ️ Tickets: 20€ Your ticket includes: 50% off your first drink Access to curated sporty & social dynamics Delicious snacks to keep the energy up A surprise raffle (yes… we said surprise) & a room full of ambition, active and attractive energy! This isn’t just another singles event. It’s a sport meets social chemistry event… designed so you actually connect and overlap. If you were coming last time, you already know the tension was building… If you missed it… this is your second first impression. Spots are limited (and we’re not increasing capacity). You’re either in the room when it happens…. Or will have to hear about it later Tickets and more info here: https://luma.com/4fek6obo❤️‍ -OVERLAP

GLOBALS Tech Festival Afterparty Pre-MWC26, 4FYN. DJs, global crowd & premium vibes. The Social Hub, 9:30. Connect after dark. Club GLOBALS Join us for the official AFTERPARTY of **[GLOBALS Tech Festival](https://www.gstfestival.com/)** by Club GLOBALS (Pre-party for MWC26 and 4FYN) After an unforgettable day of networking, and global energy, we keep the night alive with an exclusive afterparty bringing together international entrepreneurs, creators, investors, and tastemakers from around the world. Expect a high-level crowd DJs with good music vibes Premium venue & atmosphere ✨ The perfect place to connect, celebrate, and elevate your network Whether you attended GLOBALS Tech Festival or are joining the community for the first time, this is where real connections happen after dark. Location: The Social Hub Time: 21:30 Hosted by Club GLOBALS — connecting tech leaders through unforgettable experiences. More info about the discounted passes: https://www.gstfestival.com/ Want to become a member? Apply at https://clubglobals.com/ Have any questions? Contact us at community@clubglobals.com

**Multicultural Salsa&Bachata presenta:** Éste **Jueves 26 de Febrero**, disfruta de la sesión más completa con mucha Salsa y no olvidandonos de la bachata en la comodísima y hermosa Sala Vivaldi de Barcelona, **El programa es el siguiente** 20:45: Apertura de Puertas 21:00: Taller de Bachata por Soriano y Yasmin 22:00: Taller de Salsa Cubana por Marjorie desde Perú, talller de nivel inicio simultáneo. 22:45: Inicio de la sesión de Baile Social a cargo de DJ Wey tocando dos canciones de Salsa y una Canción de Bachata (2vs1), Animaciones por Xelxo desde Colombia 02:30: Fin de Sesion Entrada: **Sólo 9€ incluye Bebida** (Agua, Cerveza, Refresco, Vino). Todos los niveles de baile son bienvenidos. Reserva haciendo RSVP en Meetup: Info al +34633333173. Ubicación: Sala Vivaldi Carrer de Llança 5, Metro L3 **\-\-\-\-\-\-ENGLISH DESCRIPTION\-\-\-\-\-\-\-\-** This Thursday **February 26th,** enjoy the most complete latin session of the city in a beautiful and big place called Sala Vivaldi in Barcelona. **Program runs as follows** 20:45: Doors Open 21:00: Bachata Workshop by Soriano & Yasmin 22:00: Salsa Cubana's Workshop by Marjorie from Peru, a beginner Salsa workshop will take place as well. 22:45: Social Dance session by DJ Wey playing the best hits of Salsa & Bachata's songs (2 vs 1). Animations by Xelxo from Colombia 02:30: End of Session **Entry Price just for 9€ includes a standard drink** Reserve by making RSVP in this meetup: info at +34633333173. Location: Sala Vivaldi, Carrer de Llança 5, Metro L3 **FOLLOW US/ SIGUENOS:** Instagram: [https://www.instagram.com/multicultural_salsa_bcn/](https://www.instagram.com/multicultural_salsa_bcn/) Facebook: [https://www.facebook.com/multisalsabcn](https://www.facebook.com/multisalsabcn) Whatsapp Group: [https://chat.whatsapp.com/9DYjrIu28yh1em2R8AVcvU](https://chat.whatsapp.com/9DYjrIu28yh1em2R8AVcvU) Telegram Group: [https://t.me/+HYvXvi3uoQVjNDFk](https://t.me/+HYvXvi3uoQVjNDFk)

Nuestra nueva web: [https://www.patreon.com/singlesbarcelona](https://www.patreon.com/singlesbarcelona) **RANGO 37-47 AÑO** **RANGO 37-47 AÑOS** **RANGO 37-47 AÑOS** **❤️SPEED DATING EXPRESS FIRST DATES INTERCAMBIO DE TELÉFONOS LIBRE** **SPEED DATING CITAS RÁPIDAS. ENCUENTRA PAREJA.** INTERCAMBIO DE TELÉFONOS LIBRE. **Precio:** **Inscripción gratis para las chicas.** Se tiene que pedir consumición en el bar. **Inscripción 5€ EN EFECTIVO para los chicos +** Se tiene que pedir consumición en el bar. Citas de 7 minutos aproximadamente según los que seamos. Todos hablan con todos de 2 en 2. Inscripción y ubicación por whatsapp 630 467 646 una vez estés apuntado aquí en meetup. **Primero apúntate en meetup luego envía whatsapp. No envíes whatsapp si no apareces en la lista de apuntados del evento meetup.** Gracias.

Join our E-Commerce and Amazon FBA Meetup in Barcelona for an evening of networking and valuable insights from successful entrepreneurs in the e-commerce industry. Learn from the best as they share their strategies for achieving success on platforms like Amazon, Ebay, Shopify, and WooCommerce. Whether you're a seasoned online seller or just starting out, this event is perfect for anyone looking to grow their e-commerce business. Connect with like-minded professionals, discover new opportunities, and gain valuable tips on digital marketing, SEO, email marketing, and more. Don't miss this chance to be inspired and take your e-commerce venture to the next level!

Nuestra nueva web: [https://www.patreon.com/singlesbarcelona](https://www.patreon.com/singlesbarcelona) Nostre nova web: [https://www.patreon.com/singlesbarcelona](https://www.patreon.com/singlesbarcelona) Our new site: [https://www.patreon.com/singlesbarcelona](https://www.patreon.com/singlesbarcelona) CHAT DE iNTERCAMBIOS DE IDIOMAS CADA DÍA ONLINE Y LOS VIERNES EN PERSONA EN EL BAR, HAZ NUEVOS AMIGOS/AS Y ESCUCHA MUSICA LANGUAGE EXCHANGE CHAT EVERYDAY ONLINE & FRIDAY IN PERSON MEET FRIENDS MUSIC VEN SOLO/A O CON AMIG@S Y PÁSALO PIPA HACIENDO NUEVAS AMISTADES TOMANDO UNA CERVEZA, BAILANDO Y PRACTICANDO IDIOMAS DE UNA FORMA NATURAL ESTE SUBGRUPO SE ORGANIZA A TRAVÉS DE LOS CHAT PRO LANGUAGE EXCHANGE DENTRO DE LA PLATAFORMA PATREON SINGLES BARCELONA. COLABORA, PARTICIPA Y EMPUJA. CREA ACTIVIDAD SOCIAL. COGE LA PALA. PRACTICA ESPAÑOL, CATALÁN E INGLÉS [https://www.patreon.com/singlesbarcelona](https://www.patreon.com/singlesbarcelona)

Nuestra nueva web: [https://www.patreon.com/singlesbarcelona](https://www.patreon.com/singlesbarcelona) ❤️NUEVO SUBGRUPO BAILAR TECNO, MÚSICA TECNO, CLUBS Y SESIONES HOUSE & DANCE NUEVO SUBGRUPO PARA LOS AMANTES DE LA MÚSICA TECNO QUE QUIEREN DISFRUTAR Y HACER NUEVAS AMISTADES QUE TAMBIÉN LES GUSTE LA MÚSICA TECNO. SE VAN A PROPONER SALIDAS A CLUBS TIPO MOOG, APOLO, LES ENFANTS, RED58, RAZZMATAZZ, BIKINI, MONUMENTAL y otras que nos hagáis llegar COMENTA TU INTERÉS A TRAVÉS DEL CHAT PRO DISCO&TARDEO JÓVENES DE NUESTRA NUEVA WEB. LINK ABAJO. NOS PONEMOS DE ACUERDO POR EL CHAT GRUPO WHATSAPP QUE EMPEZAMOS A ARMAR DESDE YA PARA FACILITAR EL ENCONTRARNOS. ESTE SUBGRUPO SE ORGANIZA A TRAVÉS DEL CHAT PRO DISCO&TARDEO JÓVENES 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) GRUPO CHAT WHATSAPP CRECIENDO

Communication is everything in life You are only as successful as your ability to communicate. \- What if you could confidently talk to anyone? \- What if you had the ability to calmly control every conversation? \- What if you could close that sale\, ask for that date\, make new friends\, repair problematic relationships\, get that raise\, or effortlessly express any idea with confidence? You can! The secret to success relies on your ability or inability to effectively communicate. Attend a free seminar and gain a better ability to communicate. Hosted by the Church of Scientology of Central Ohio 1266 Dublin Road, Columbus, OH 43215 For more information, contact Rhiannon, the Event Host at 614-221-5024

Bring your business cards and network in person with other business professionals! Gold Star Referral Clubs is one of the most established professional networking organizations in the country, with multiple groups in central Ohio. Join us!

Join us and work remotely together with like-minded UX folks. This is a last minute opportunity to get out at one of our favorites, [Junto](https://thejuntohotel.com/)! Plenty of seating is available in addition to a connected coffee shop and restaurant. I will be there 10-12 for sure, maybe longer. Feel free to come and go anytime during the day, and don't forget your charger and headphones!

(Note: RSVPing here on meetup does NOT reserve your seat. To do that, you’ll need to register at our website, **[HERE](https://www.coreerocks.com/Events.aspx?ID=Columbus-in-person-chapter-meeting-Your-2026-Buy-Box-Successful-Rentals-101-14-3-3-2026)**.) Let’s be honest. In 2026, you can’t use 2023 strategies and “hope” a deal works out. Demand for rentals, wholesale deals, retail deals, and even loans has changed, and that means that the most active, experienced investors have changed the way they do deals (and maybe even the kinds of deals they’ll do). Here at COREE, our job is to shortcut your learning curve by introducing you to the people and concepts you need to take the shortest path from here to financial freedom, and we think you’ll agree that this meeting is a no-brainer, if you’re serious about making wealth-building deals this year. Here’s the detailed agenda: From 6:00–7:00 p.m., From 7:30–9:00 p.m., Agenda: 5:00–6:00 p.m. Complimentary Light Dinner & Networking 6:00–7:00 p.m\*\*. New Investor Meeting: Basics of Making Money in Rentals with Vena Jones-Cox\*\*. If you’re planning to buy rentals today, you have to know how to evaluate the REAL income and expenses before you make an offer. If you’re new, you’ll finally understand how rentals really produce profit. If you’ve been around a while, you’ll see how today’s numbers change the math. 7:00 –7:30 **Buy-Sell-Trade (Members Only)** Bring your deals, money, buyer lists, referrals, and requests. Fast-moving. Bring flyers or business cards. Guests get a quick orientation with Executive Director Vena Jones-Cox. 7:30–9:00 p.m. **Main Meeting: Your 2026 Buy Box: What Experienced Investors are Buying in 2026 (and what they won’t touch).** Our panel of active, experienced investors will lay out their 2026 buy boxes. Not hypotheticals. Not “in theory.” What they are actually buying—and what they won’t touch. They’ll share: * What property types investors are actively pursuing * What strategies they’ve stopped using * The exact numbers they require before they say yes * How insurance, taxes, and rates have tightened the buy box * What instantly disqualifies a deal in today’s market * How to define your own 2026 buy box based on capital and risk tolerance Members and non-members at any level of knowledge and experience are welcome—as long as you’re serious about real estate, value experience-based, no B.S. education, and want to give as much as you get. Remember, to actually reserve your seat, you have to go **[HERE](https://www.coreerocks.com/Events.aspx?ID=Columbus-in-person-chapter-meeting-Your-2026-Buy-Box-Successful-Rentals-101-14-3-3-2026)** and register on our website!