Decentralized Systems & Applications

**AI Sec Eng Spain anteriormente DevSecCon España** en colaboración con **Madrid DevOps** y **HackerDreams %27** **📅26 de marzo, 2026** **🕖6pm CEST** **Agenda:** **Lugar**: Utopicus Paseo de la Habana **Dirección**: [P.º de La Habana, 9, 11, Chamartín, 28036 Madrid](https://www.google.com/maps/place//data=!4m2!3m1!1s0xd422931c8969f65:0x75d2a090890a4be2?sa=X&ved=1t:8290&ictx=111) **Ponencia** **Título:** DB upgrade with terraform on AWS **Ponente:** *Antonio Peña.* **Mini-biografía:** Senior Cloud Engineer, AWS Solutions Architect y CKA, con una amplia trayectoria en Linux, Open Source, Kubernetes y plataformas cloud. Especializado en DevOps, CI/CD, GitOps y automatización de infraestructura sobre AWS, Azure y GCP. Como organizador de MadridDevOps, impulsa la comunidad compartiendo experiencias reales sobre cultura DevOps, cloud engineering y modernización de plataformas. **Descripción de la charla:** En esta charla veremos cómo gestionar un proceso de **upgrade de base de datos en AWS usando Terraform**, de forma controlada, repetible y alineada con buenas prácticas de infraestructura como código. Hablaremos de cómo preparar el entorno, planificar cambios de versión, minimizar riesgos, y automatizar la infraestructura alrededor de la base de datos para que las actualizaciones sean más seguras y predecibles. También repasaremos retos habituales como la compatibilidad entre versiones, backups, snapshots, ventanas de mantenimiento, rollback y coordinación con aplicaciones dependientes. Una sesión práctica para entender cómo Terraform puede ayudar no solo a crear infraestructura, sino también a mantenerla y evolucionarla en entornos cloud productivos. *** Si aún no te has unido a la comunidad de Discord, ¡por favor, hazlo! Puedes encontrarnos en Discord en: **[https://devseccon.io/discordcommunity](https://devseccon.io/discordcommunity)** **Telegram:** [https://t.me/hackerdreamsdcomm](https://t.me/hackerdreamsdcomm) [https://t.me/hackbcn](https://t.me/hackbcn) [https://t.me/+EQXjdGyWYPAotmLG](https://t.me/+EQXjdGyWYPAotmLG) [https://t.me/xopsnoticias](https://t.me/xopsnoticias) [https://t.me/xopshispano](https://t.me/xopshispano) **X:** @hunters_flag @hackerdreamsorg @hackbcn @xopsconference Si es una empresa o su empresa quiere colaborar o patrocinar futuros eventos enviar correo a [info@hackerdreams.org](http://mailto:info@hackerdreams.org/) O rellenar siguiente formulario: [https://forms.gle/JbBwUGY26fAeLqJ78](https://forms.gle/JbBwUGY26fAeLqJ78) Para cualquier aportación dineraria: [https://www.paypal.com/donate/?hosted_button_id=8UHV5UN47J3DY](https://www.paypal.com/donate/?hosted_button_id=8UHV5UN47J3DY) [https://bmc.link/hackerdreams](https://bmc.link/hackerdreams)

**First meetup of the Columbus AI Engineering group.** We’ll kick things off with a practical, beginner-friendly discussion on: **How LLMs like ChatGPT actually work — and how to build real applications with them.** We’ll cover: * what’s actually happening under the hood (at a high level) * why LLMs behave the way they do (hallucinations, prompt sensitivity, etc.) * how people are building real systems with them today * where things break in practice This will be a **short, informal talk (\~15–20 min)** followed by open discussion and Q&A. Whether you’re an engineer, builder, or just curious about how modern AI systems work, you’re welcome to join. No slides, no fluff — just real conversation about real systems. We’ll hang out afterward and get to know each other.

## **Columbus Bitcoin Meetup – Event** Join us for another great evening dedicated to Bitcoin, learning, and community. We will be gathering in the private room at Olentangy Brewery for an evening of conversation, education, and fellowship with fellow Bitcoiners. This special event will feature three guest speakers sharing insights from across the Bitcoin ecosystem. ### **Guest Speakers** **Lindsay Faust** Relationship Manager at River **Andrew Tilmann** CEO of the Midwest Bitcoin Summit **Carlos Estrada** Founder of Coin Vigilante In addition to speaking during the event, Andrew Tilmann will also be available for a meet and greet. This will be a great opportunity to ask questions about the upcoming Midwest Bitcoin Summit, taking place September 23 and 24 at the Columbus Convention Center. ### **Midwest Bitcoin Summit Discount** Early Bird pricing ends **April 1st**, but you can still save **21%** by using the promo code: **COLUMBUS** Use the link below to apply the discount: [https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus](https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus) ### **Event Details** This will be a three hour event, with speakers beginning just before 7:00 PM. There will be plenty of time afterward for networking, meeting new friends, and continuing the conversation. Food will be provided. We look forward to seeing you there! ***

**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 **Abstract** Web Forms gave .NET developers a powerful abstraction for building reusable UI controls long before design systems were a thing. Web Components finally bring that same idea to the browser natively. This session explores how the Web Forms mindset translates into Custom Elements, Shadow DOM, and HTML templates. We’ll examine how Web Components enable design systems that work across frameworks, how they differ from server‑driven controls, and why they’re becoming a foundational layer for modern UI. Whether you’re maintaining legacy apps or building greenfield projects, you’ll leave with a practical understanding of how to apply familiar patterns in a modern, standards‑based way. **YouTube Link** TBA

Central Ohio Radio Enthusiasts—CORE—is an informal community for anyone enthusiastic or curious about radio—whether you're new to radio and want to learn or you've been tinkering for years and want to share. Ham radio operators, GMRS users, Meshtastic fans, software-defined radio nerds, makers, and technical and non-technical folks are all welcome. No experience required or expected. This month we have **WiFi HaLow: Introduction and Practical Use** with **Alex Barbur**. Details are are [core.radio](https://core.radio).

In this local meeting, you will discover knowledge that you can use to get over the past. The key to improving your personal motivation, self-confidence, and happiness is to get over your painful memories. When you become free of your past, you will be free from stress, anger, anxiety and depression. Studies show that negative emotions can affect your health. By being free of negative emotions, believe it or not, you will most likely even look younger, feel more energetic, and become healthier! 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 brought to you by the Dianetics and Scientology life improvement center.

Builders, creators, architects, admins, consultants - come one, come all. This one's for you. We're bringing a little friendly competition to the Columbus ServiceNow community while highlighting the cool things people have built on the platform. Five presenters will take the stage to showcase something they've built, solved, designed, or imagined on the ServiceNow platform - and a panel of judges (plus YOU, our amazing audience) will score them live. So basically, America's Got Talent but make it ServiceNow's Got Talent. Bring a notepad if you'd like 'cause you'll definitely be learning something new. Each presenter gets 10 minutes max to wow the crowd with: • A demo • A real-world business solution • A bold idea • A UX transformation • Or a creative use of the platform Judging Criteria: 🏆 Business Value 🚀 Innovation ✨ User Experience This event is about celebrating ideas, sharing knowledge, and showing how ServiceNow can drive both business impact and meaningful user value. Come learn. Come support. Come get inspired. Refreshments and bites will be provided. And maybe next time… you’ll be on stage.

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