Reactive Programming

**🚀 We're thrilled to announce the next Cloud Native Meetup @ ING!** Come join us for an evening of talks, great conversations, and good food. Expect fresh insights, real-world stories, and the kind of hallway chats that spark your next big idea. **Agenda** 🕕 18\.00 — Doors open \| Food & drinks 🎤 19.00 — Welcome 🔐 19.15 — What I'll Tell My Kids About K8s Security *(Lars Lefebvre, ING)* 🚀 19.45 — K8s-wish and other LLM adventures *(Andrew Yourtchenko)* ☕ 20.15 — Break ⏳ 20.30 — Kubestronaut Panel 🤝 21.00 — Networking **Getting here** **No on site parking available**, instruction on how to get there [over here](https://drive.google.com/file/d/1FYT8vBU513koHhvOyqW8tQshbzAhlzQ_/view?usp=sharing). **If coming by car, please only refer to the public car park instructions.** Access via entrance A, then follow the signs. **Sessions:** **Session 1:** **What I'll Tell My Kids About K8s Security (Lars Lefebvre, ING):** What I'll Tell My Kids About K8s Security is a creative and story-driven talk that makes Kubernetes security approachable — even for those who aren't deep in the weeds of K8s. Framed through metaphors and everyday analogies, the talk explores complex security challenges in a fun and memorable way. In the second half, I'll share the story behind an open source tool we built at ING to help teams uncover and understand real-world security issues in their clusters. *Bio:* Lars is a dedicated Cloud and Application Security Engineer with a strong background in the Cloud Native stack. He’s experienced in managing multi-cloud environments, promoting cloud-native practices, and enhancing security measures in software development lifecycles. **Session 2:** **K8s-wish and other LLM adventures (Andrew Yourtchenko)** Can we use LLMs to avoid writing YAML? This talk explores two approaches — a single-shot LLM call and a full agentic loop — using two open source projects, and what each gets right and wrong. *Bio*: After 25 years at Cisco across three lives — TAC Security, IPv6 technical marketing, and high-performance networking software — Andrew is now building open source agentic AI tools and doing occasional consulting. He is a coauthor of DHCPv6 and other RFCs, and holds 4 US patents. **Session 3: Kubestronaut Panel** *30 minutes \| Q&A* Meet a panel of Kubestronauts, some even Golden. We'll kick off with a quick intro to what a Kubestronaut (and Golden Kubestronaut) actually is, then dive straight into an interactive Q&A. Hear about their journey, what the grind really looks like, and what they'd do differently. This session is all about the conversation. *Bio Olivier Calzi (Golden Kubestronaut):* From pulling Ethernet cables as a student in France to becoming a Golden Kubestronaut, I have spent 10 years learning the stack from the ground up. Now a Cloud Native Expert with 15 CNCF certifications, I focus on SRE and infrastructure architecture. I'm a firm believer in the "work-study" model and a lifelong student who still finds engineering deeply fun. *Bio François Duthilleul (Golden Kubestronaut):* François Duthilleul is a Principal Solutions Architect at Red Hat, leading the security domain in the EMEA Telco CoE, co-author of the OpenShift Security book, and contributing to O-RAN and Sylva standardisation. The first Belgian Golden Kubestronaut and 2025 Top SSA, he brings 15+ years of network cloudification experience — and you'll find him at rock concerts, on a road bike, or talking cloud-native over a craft beer. *Bio Evelien Schellekens (Kubestronaut):* Evelien is a Principal Solutions Architect at Elastic. She enjoys sharing knowledge through public speaking and interacting with the technical community. She’s passionate about observability and open source technologies like Kubernetes and OpenTelemetry.

EN (FR en bas): We're still accepting people in our classes. Join us!​ -step 1: Book here! -> [https://www.danceproject.be/reservations.html](https://www.danceproject.be/reservations.html) -step 2: Show up! Schedule: [Monday to Thursday](https://www.danceproject.be/classes.html#schedule) Fees : [All info on trials, packs, subscriptions here](https://www.danceproject.be/classes.html#fees) Locations: -Rue Brialmont 7, Brussels Metro/Tram: Botanique Salsa, Bachata, Lindy Hop, Forró Intro - 1: From base to the dancefloor! When you come for the first time we go over the base & rhythm with you. Then you are included in the group and everybody learns the same new steps for which you just need the base. Practice makes perfect: just relax and enjoy Salsa, Bachata, Lindy Hop and/or Forró! Our group is very welcoming and looking forward to meet new dancers! Salsa, Bachata, Lindy Hop, Forró Roots I - 2: Ready to go deeper on Salsa, Bachata, Lindy Hop &/or Forró? Let's go! [https://www.danceproject.be/classes.html#improvers](https://www.danceproject.be/classes.html#improvers) Salsa, Forró Roots II - 3: Looking for #SalsaChallenge? Already familiar with Forró Root? We've got your back! [https://www.danceproject.be/classes.html#intermediates](https://www.danceproject.be/classes.html#intermediates) More info: -Web: [https://www.danceproject.be](https://www.danceproject.be) -Whatsapp: +32 493 16 41 10 -Mail: brussels.salsa.project@gmail.com -[Facebook](https://facebook.com/brussels.salsa.project) -[Instagram](https://instagram.com/brussels.salsa.project) \-\-\-\-\- FR: Nous acceptons encore de nouvelles personnes dans nos cours. Rejoins-nous ! -1ère pas : Fait ta réservation ! -> [https://www.danceproject.be/reservation.html](https://www.danceproject.be/reservation.html) -2ème pas : Vient danser ! Horaire : [lundi à jeudi](https://www.danceproject.be/cours.html#horaire) Les prix : [Toutes les infos sur les essais, packs, abonnements ici](https://www.danceproject.be/cours.html#prix) Endroits : -Rue Brialmont 7, Bruxelles Metro/Tram: Botanique Salsa, Bachata, Lindy Hop, Forró Intro - 1 : De la base à la piste de danse ! Lorsque tu nous rejoins on voit la base et le rythme avec toi. Ensuite, tu es inclus dans le groupe et tout le monde apprend les mêmes pas pour lesquelles tu as juste besoin de la base. C'est en forgeant qu'on devient forgeron : détend-toi et profite la Salsa, de la Bachata, du Lindy Hop et/ou du Forró ! Notre groupe est très accueillant et a hâte de rencontrer de nouveaux danseurs ! Salsa, Bachata, Lindy Hop, Forró Roots I - 2 : Prêt à approfondir la Salsa, la Bachata, le Lindy Hop &/ou le Forró ? Allons-y! [https://www.danceproject.be/cours.html#inities](https://www.danceproject.be/cours.html#inities) Salsa, Forró Roots II - 3 : Tu cherches #DefiSalsa ? Tu connais déjà Forró Roots ? Nous sommes là pour toi ! [https://www.danceproject.be/cours.html#intermediaires](https://www.danceproject.be/cours.html#intermediaires) Plus d’info: -Web: [https://www.danceproject.be/fr.html](https://www.danceproject.be/fr.html) -Whatsapp: +32 493 16 41 10 -Mail: brussels.salsa.project@gmail.com -[Facebook](https://facebook.com/brussels.salsa.project) -[Instagram](https://instagram.com/brussels.salsa.project)

**Vous souhaitez améliorer votre prise de parole en public et développer vos compétences en communication et en leadership ?** 🎤✨ Le **Club des Orateurs**, club francophone de Toastmasters à **Bruxelles**, vous invite à une soirée d’apprentissage dans une ambiance conviviale et bienveillante. **Prochaine réunion** : 📅 **Deuxième jeudi du mois** 🕢 **19h30 – 21h30** 📍 **Villa François Gay (salle au 1er étage)** 📍 **326 Rue François Gay, 1150 Bruxelles** 🏡 Le bâtiment est situé dans un petit parc. 🚀 **Pourquoi participer ?** ✔️ **Améliorez votre aisance à l’oral** grâce à des discours préparés et des interventions improvisées. ✔️ **Développez votre leadership** en prenant des rôles lors des réunions. ✔️ **Rejoignez une communauté dynamique** qui vous aidera à progresser à votre rythme. ✔️ **Une expérience immersive** avec des retours bienveillants pour évoluer rapidement. 🔹 **Déroulement d’une réunion Toastmasters** : Nos réunions incluent des discours préparés, des exercices d’improvisation et des évaluations constructives pour vous aider à progresser. 👥 **Qui peut participer ?** Tout le monde est bienvenu, que vous soyez débutant ou expérimenté ! **L’entrée est gratuite pour les invités.** 📩 **Intéressé•e ?** Inscrivez-vous dès maintenant sur Meetup et rejoignez-nous pour une soirée enrichissante !

🇬🇧 EN 🇬🇧 🔥 SALSA CUBANA CLASSES ARE BACK 🔥 We are delighted to see you again for the start of the 2025/26 academic year 👉 Find all the needed information on our website : **[https://danzamania.be/](https://danzamania.be/horaires/?fbclid=IwZXh0bgNhZW0CMTAAYnJpZBExUjNGU3gzRWdsUFlWMGJMQgEeCHgiKV40mum5hOp5szt0Lxx3U-5DyHO_wR_ZJekcr_m7EFRdpcRthKRV9EU_aem_W6hFXCri8O6Kd9el-RIuIQ)** ✅ PROGRAMME ✅ 👉 TUESDAY 16/09 7:00-8:00 pm - Salsa Level 1A @ Salle Oxygène - Angie, Octavia & Raffa 8:15-9:15 pm - Salsa Niveau 1B\* @ Salle Ste Suzanne - Tine & Sam 8:00-9:00 pm - Salsa Cubana Level 2 @ Salle Oxygène - Angie, Octavia & Raffa \*The Level 1B course is the same as the Level 1A course. It will be taught by Tine & Samuel and starts at 8.15 p.m. It allows those who wish to arrive one hour later and have a group of about 10 people. 👉 WEDNESDAY 17/09 7:00-7:30 pm - Body Expression @ Salle Oxygène - Yusnay, Tine & Raffa 7:30-8:30 pm - Salsa Level 3 @ Salle Oxygène - Yusnay, Tine & Raffa 8:30-9:30 pm - Salsa Level 4 @ Salle Oxygène - Yusnay, Tine & Raffa 👉 THURSDAY 18/09 8:00-9:00 pm - Cuban Salsa Partnerwork - Level 1 + @ Studio Empain - Zoli 9:00-10:00 pm - Cuban Salsa Partnerwork - Level 2 + @ Studio Empain - Zoli 👉 FRIDAY 19/09 8:30-9:30 pm - Rueda de Casino @ Vibrato - Team Danza Mania 9:30-12:30 am - Practica & Entertainment with DJ Joel 💃 Dale Mambo🕺

Meet and make new Friends after work.

Let’s shake off the Thursday blues with some easy kilometers. This is a no-drop social run designed to keep the heart rate down and the vibes high. 📍 The Details Meetup: 18:55 (for a quick briefing) Start Time: 19:00 sharp Meeting Point: Under the Arch 🏛️ 👟 Target Pace: 6:30 – 7:00 min/km Distance: 5.0 km Effort Level: Conversational. If you can't speak in full sentences, we're going too fast! 📝 Note Please ensure you have "active" lights or reflective gear, as it’ll be dark by the time we finish. No Bag/Sweater Drop

Thursday **9th of April!** CLUB 51 Rue de la Madeleine 51, 1000 Brussels **Use our promo code DAO_BXL26 to get 20% off!** **Get your ticket [here](https://luma.com/block26)** **Following last year's Block 25 sold-out success, Block 26 is about to get minted!** Get ready for the second annual event designed for connection, celebration, and growth! Block 26 brings together the founders, developers, investors, and leaders of the Belgian blockchain ecosystem. [Check out last year's aftermovie!](https://www.youtube.com/watch?v=_1lx5nL-10I) An exclusive evening where the Web3 community meets to exchange insights and celebrate progress. We'll raise a glass to the past year's accomplishments and set the tone for deeper relationships and future growth. ​**What to Expect:** ​**🥂 Drinks & Bites:** Let’s celebrate in style! ​**👗 Dress Code:** Geek Chic – look sharp but stay comfortable! ​**🎚️ Music & Good Vibes:** Immerse yourself in a sophisticated atmosphere followed by a live DJ ​**🌐 Unparalleled Networking:** Connect directly with various blockchain communities ​**💡 Community Reps & Sponsors:** Meet the community founders and key sponsors ​🏆 **Kastaar Awards:** Reward for people and projects that stood out last year ​**Coming with a group (6+ people)?** Get in touch to enquire about a VIP table **Don't miss out! [Grab your ticket](https://luma.com/block26)** **Participating Communities:** * Blockchain4Belgium * ​Blockchain for Europe * ​Commons Hub Brussels * ​Cryptosquare * ​DAO Brussels * ​ETH Belgium * ​Furt’Her * ​Howest * ​ICP * ​OffChain * ​WAIB * ​Walchain * ​0x32 ​**Sponsors:** * ​Crypto Kastaar ​**Would you like to support or sponsor the event? Get in touch with the organizers.** **[Let's go!](https://luma.com/block26) Don't forget our promo code DAO_BXL26 to have 20% off!**

Hello everyone, I’m a photographer and documentary filmmaker, and after many years working in this field, I’ve recently felt the need to create smaller, more personal workshops where people can really learn by doing and take time to explore their creativity. **On April 11th and 12th,** I’m organizing a 2-day mobile phone photography workshop in **Brussels, Chatelain area** from **10:30 to 15:00** each day. We’ll spend the time learning how to use our phones more intentionally — working with light, composition, framing, and understanding how to get the most out of the camera settings and retouching apps as **snapseed and lightroom.** The approach is very practical, with a mix of indoor and outdoor exercises, so you can immediately apply what you learn. Price is **180 eur** per participant for **2 days workshop** with food included, if you bring a friend or you are a student there is a **15% discount.** The group will be small **(max 6-8 people)**, which makes it easier to exchange, ask questions, and get individual feedback. It’s also meant to be a relaxed and creative experience — we’ll take breaks, have some good food, and enjoy the process of seeing things differently through the camera. If you’re curious about photography, want to improve your images, or just feel like doing something creative for a couple of days, you’re very welcome to join.

We do cycles of 4-6 weeks, with a progressive intensity, and the last session is lighter. Program: 15’ warm up **To be defined** Cool down to get back to the starting point… or more S=All out sprint RF = Run fast, at MAS (Maximum aerobic speed) CF = Run comfortably fast (1h threshold) J = Jog, recuperation Notes: It should take about one hour in total, as the cool down will end when we reach back to the meeting point. It's NOT required to have an activity tracker or smart watch to be able to follow the program, as I'll be giving signals with a whistle. For the "run" part, you can follow your own pace and we'll be regrouping in the "jog" part. Intervals training is not advised for total beginners. To have an idea, the average pace at the warm up is around 5'45"/km-6'/km so this pace should feel very comfortable ***Acknowledgement of member responsibility and release of liability.*** By signing up for this event, you agree to release the organizers from any responsibility and liability in all claims. As the participation is strictly voluntary and you freely choose to join, it is the responsibility of individuals participating to ensure that they are fit enough and have adequate coverage to protect themselves.

Let's meet to write ! Schedule : 11:00 - 11:30 am : Presentation tour. Share briefly with the group about your project and your "goal of the day". 11:30 - 13:30 : Let's write ! 13:30 : Conclusion tour. Did you achieve your goal of the day ? See you soon !

Join us for our very first co-parenting speed dating evening - designed for people who are ready to have a child and want to meet a like-minded co-parent, without the expectation of a romantic relationship. You will have a series of short, one on one conversations with other participants, giving you the chance to quickly explore compatibility. Whether you are just starting to explore co-parenting or already committed to this path, this event is an opportunity to meet others who share your intention - and take a real first step!

Need some quiet time for reading? Want to share the experience with others? Join us at the charming venue of The Sister Café to read in the company of others. It’s alone, but also together, get it? We read for an hour and a half, then chat over a drink. This is a free activity except for the price of the drinks you're consuming.

This workshop series is a **follow-up to the ESP32 Robotics workshop**, but with a different concept. Here, there will be no subject set in advance, instead **all participants are welcome to join at any point and at any level, from beginner to expert**. Beginners will be guided though the basics (C programming, how to use measurement tools, soldering, PCB design, etc…) and can get advice on what tools and kits to start with, others can come with their own projects to get help or share some knowledge. ## Requirements * Bring your own laptop (Windows, Linux or Mac) * Any microcontroller/dev kit to develop your project(s). If you are a beginner and don’t know what to buy, come and we’ll find the best starter kit for you ! * A strong desire to learn stuff, good mood and some patience !

Socializing and Networking 🛜🆕 at PLUX on Thursday. Making new friends and drinking 🚰🎈🎉🚿🌊. Everybody Welocme, locals, expats or new 🆕 in town.

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

Bring your work or your hobby, hang out, and code with us. Follow @buckeyecocoa for more information.

**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

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!

It’s time to take control of your mental health. How do you get rid of stress, anxiety and uncertainty? These emotions are buried deep in your reactive mind. Find out what the reactive mind is, and in the process find yourself. Here is the secret of being positive and free: Thinking positively is not enough. You also have to get rid of the negative thinking. Your mind is like a garden. You can plant many beautiful flowers in it, but if you don't get rid of the weeds when you plant your flowers, the weeds will soon take over the whole garden. A positive thought is like a flower in your mental garden, and a negative thought is like a weed. You cannot expect to have a positive mindset if you continue to have negative thoughts dwelling and growing there. So, how do you get rid of the negative thoughts? That's what this Meetup is all about. Attend this local meeting and find out! The Meetup event will be led by a consultant who had helped many people live happier in life. Be sure to click on the red "Attend" button below to come to this local event. We look forward to seeing you there. This group is created by the Dianetics & Scientology life improvement center.

The global Azure community is coming together again, and Columbus is officially on the map. View the session lineup and speakers at [Global Azure Columbus 2026](https://coazure.github.io/cbus-global-azure-2026/) On **Saturday, April 18, 2026**, the Azure Columbus Meetup, DevOps Meetup, and Code and Coffee Meetup are hosting our local edition of Global Azure 2026. This is a free, community-driven event packed with learning, networking, and all things Microsoft Azure. Whether you’re building modern cloud-native apps, experimenting with AI agents, deploying containers, automating infrastructure, or just beginning your Azure journey, this event is for you! **What to Expect** * Engaging technical sessions * Real-world Azure architecture & cloud-native patterns * AI, agents, automation, and modern DevOps * Food and drinks (because learning burns calories) * Time to connect with fellow engineers, architects, and cloud enthusiasts **Who Should Attend?** * Software engineers (any language, any stack) * Cloud architects * DevOps engineers * Data professionals * AI explorers * Platform builders * Anyone who loves solving hard problems with great tools If you build, deploy, automate, scale, monitor, or optimize in Azure, you’ll feel right at home. **Why Global Azure?** Global Azure is a worldwide community event where Azure user groups host learning sessions on the same day across the globe. It’s grassroots. It’s technical. It’s practical. And it’s powered by people who genuinely love sharing what they’ve learned. And yes, it’s free to attend!

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!