Decentralized Systems & Applications

Hello Berliners, Join us for an insightful discussion and networking as we delve into the world of Bitcoin, Bitcoin mining and the broader trends shaping the Bitcoin ecosystem (including L2 developments) and **hyperbitcoinization**. Event will be on the second **Thursday** of the month! **Event Format:** Our event will adhere to the **Chatham House Rules**, ensuring confidentiality and encouraging open discussion. This format will enable you to engage with our expert speakers, ask questions, and network after the panel while respecting the confidentiality of discussions. Whether you're a seasoned Bitcoiner or a curious newcomer, this event offers a unique opportunity to expand your knowledge and connect with like-minded individuals. **Networking & Refreshments:** Enjoy networking opportunities with fellow attendees while sipping on refreshing drinks and indulging in small snacks. Share your thoughts, exchange ideas, and forge connections in a relaxed and inviting atmosphere. Reserve your spot now. We look forward to seeing you there! Denis, Arnab and Irina

Join us for the Berlin FinOps Meetup, hosted by Cortex Reply. An evening for anyone interested in **FinOps**, **cloud cost optimization,** and the **real-world challenges** of managing cloud spend. We’ll kick things off with two short, practical talks (one from Cortex Reply and one from an external guest speaker), followed by an open discussion and plenty of time for networking with other FinOps and cloud professionals. ### Agenda **17:00** – Doors open **17:30** – Welcome & introductions **17:45** – FinOps at Cortex Reply **18:15** – FinOps Practitioner talk: Living on the Edge: Kafka, Postgres, and the Art of Getting Evicted ([Christoph Ebeling](https://www.linkedin.com/in/christoph-ebeling/)) **18:45 – 21:00** – Discussion & networking We look forward to seeing you there.

He's back! The inventor of EventStorming is once again joining the Berlin Collaborative Modeling Meetup for an evening of massive learning, massive laughter, and no doubt a massive number of sticky notes. Here is the agenda: **Collaborative Reverse Roadmapping** We'll put future events on a timeline to build the future we want to happen and make it tactically sound. We'll leverage ideas from * EventStorming (surprise!) * Futurespective * Traditional planning And we'll explore a tool that will enable strategic planning and overcome deadlocks. This is a rare opportunity to spend time with a true thought leader in the DDD community and the person who contributed to the world the whole premise of our meetup. He's full of insights and stories, wit and wisdom, and we are lucky to have him drop by to share them with us. Don't miss this one! **Please do not RSVP if you do not intend to come. For this event only, we have to limit attendance.** As always, everyone is welcome. You don't need to be a software engineer to participate. In fact, it would be great to have more people who aren't software engineers. We're here to solve problems cross-functionally, not get into implementation details. As long as you care passionately about getting things right, then you belong here! This is a hands-on workshop. Be prepared to participate fully and add to the energy of the room. Looking forward to seeing you there!

In this Yin practice, we take time to pause, soften, and simply be. With the support of long-held, floor-based postures, the body gradually opens, accessing the deeper layers of fascia and energy pathways. We allow gravity to guide the process. This subtle work calms the nervous system, nurtures stillness, and encourages quiet reflection. It's an opportunity to release tension from both body and mind, and to reconnect with yourself on a deeper level. The class is led in English and is open to all levels. .

👋 Hallo und herzlich Willkommen Ahead of the [bobkonf this year](https://bobkonf.de/2026/en/) we're getting the Clojure and Elixir meetup groups together again and celebrate functional programming. Let's grab some drinks together to warmup for bobkonf starting the next day. We're meeting at the Volksbar near Rosa-Luxemburg-Platz which is just a quick U2 ride away from the Bobkonf location at Potsdamer Platz ⏰ Schedule 7:30 PM: We're getting started at Volksbar We will be getting together in the bar and have small groups per table to socialize and nerd out on topics of your liking (unconference style). Entrance to this pre-event Meetup is free, just RSVP please.

Please join us at New Pages to take your first steps in discovering the essential story of your family tree. Using the book *Metagenealogy: Self-Discovery through Psychomagic and the Family Tree* (Jodorowsky and Costa) as a guiding text, the hosts will help you put together the initial draft of your family tree so that you might learn the essential story you tell and live out in your life. You will then learn the next steps you should take to more fully fill out this story and to make the family tree your ally rather than your enemy. Metageneaology seeks to combine art and science in order to help people create for themselves a meaningful life. Why is this important? We all are in the process of living out some type of story we tell ourselves. Often, this story isn't something we created completely on our own, but is passed down to us via the family tree. It is important that we not only become aware of this story, but that we feel i*n control of it* rather than *being* *controlled by it*. Please join us for the first ever session in this work that we have found immensely help for our own selves. A note: please complete no preparatory work on your tree before the event. You need only bring yourself and perhaps your favorite pen. Attendance is limited to 9 people to allow for adequate time to focus on the discovery and building of each person's tree. Please, if you RSVP and then change your mind, change your status so that another person might be able to join. *The event is free, but a modest donation helps us continue to offer events in the future.*

We are excited to announce our next meetup, which will be hosted at the impressive SAP Berlin office. We are so excited to join forces with the OKR Leaders community to move beyond Customer Value and goal setting towards value driven integrated strategy execution. 🚀 Get ready for snacks, drinks and plenty of opportunities to learn and share. 🗓️ **Agenda**: • 18:30 – 19:00: Arrival and Registration • 19:00 – 19:15: Welcome & Opening Remarks • 19:15 – 20:30: Goal setting beyond organizational boundaries: Still Cooking 👩🏼‍🍳👩🏻‍🍳 • 20:30 – 21:00: Networking ⏰ **Doors Open:** 18:30 📍 **Location:** SAP Office, George-Stephenson-Str. 7-11, 10557 Berlin **Important: Please register with your full name for smooth check-in at the venue. Photos will be taken during the event for the purpose of sharing wrap-up posts and event summaries.** Expect an exciting and engaged discussion and feel free to bring questions of your own. We are looking forward to having you back, Steven & Stefan

Meet up and join other people in Berlin this Saturday! Whether you're a long-time resident or just travelling through, come and meet new people to have fun, make new friends and enjoy your Saturday evening in a safe and welcoming environment at one of Berlins fantastic bars. This week we're at the **1820 Bar underneath Belushi's** (see link to location). We always have several organisers there (male and female), so come say hello to us! We care to make sure that everyones enjoys themselves and we have **no tolerance for bad behaviour or creepiness.** **Follow us on Insta:** @siphappens.berlin **Join us on Telegram:** t.me/siphappens_berlin **👉 Other important notes:** \- 🍸 The locations we visit are bars and clubs\, they are businesses and we are able to keep these events free ONLY if people buy drinks\. Please respect the locations and the event by making purchases \- 🦹‍♂️ Remember to keep an eye on your belongings and prioritize your own well\-being\. We are not responsible for any lost items or personal issues\. \- 📷 By attending our events\, you consent to being photographed or filmed\. Photos and videos taken during the events may be shared on our social media\. If you do not wish to appear in the photos or if you appear in a photo that we post that you would like removed\, please send us a private message as soon as possible on Instagram \(@siphappens\.berlin\)

Fuelled by our pre-workout Espresso we go on a scenic run to Treptower Park. Whether you're training for a marathon or just decided to give running a shot: with us, you are welcome. We offer 5k or 10k routes, both with plenty of talk and good vibes all the way. > Meet us @ 9:20 AM @ Green Wall Coffee Lichtenberg > Get your pre-workout Espresso for only €1

Welcome to Sunday Tech Coffee. This is a **networking** event for those in the tech industry in Berlin. We are usually inside and to the right. Ask the barista/bartender if you can't find us.

If you’re reading this, you’re invited. Please don't hesitate to come even if you feel awkward about it, even if you're not "the typical ACX reader", even if you're worried people won't like you, etc. Join our Telegram group: https://t.me/+2-6QId-rIOczNWIy Location is the Espresso House coffee shop near Nordbahnhof, the same one where we have been before. [Espresso House](https://www.google.com/maps/search/?api=1&query=52.533104%2C%2013.387528) Gartenstraße 85-87 · Berlin

Dear Friends, "**Deutsche Post IT Services GmbH**" will be our host in March 2026! YAY! Address is: Storkower Straße 140, 10407 Berlin Thanks a lot for inviting us! Our standard-text: Are you an agile practitioner and learner? A Problem-Solver, Scrum Master, Product Owner, Developer, Agile Coach or an awesome Manager? This is our space to learn together. Bring your challenge, opportunity or problem! Anything you want to share, practice or learn about! This afternoon will be all about learning through exchanging. We will create a list of topics and form small groups to work together in an open space format. Options include: * ask for help with a current situation * bring and practice a method or technique * practice coaching, where the coach and the coachee both learn this space is safe to fail! Happy to have you as a part of our awesome community! Your ALL-Berlin crew: Alex & Simon

Hallo, es ist wieder so weit, der zweite Freitag im März ist schon diese Woche. Deshalb habe ich im Neffes am Freitag Abend für uns den hintere Bereich reserviert und ich freue mich schon, euch wieder persönlich zu sehen! Und hier der übliche Ankündigungstext: Unser zweimonatliches Treffen steht wieder an! An jedem zweiten Freitag eines ungeraden Monats treffen wir Selbstständige, Unternehmer und Freiberufler aus der IT uns wieder um 19:00 Uhr im Neffes. Bei einem gemütlichen Zusammensein werden wir uns über fast alle Themen unterhalten. Der Schwerpunkt liegt dabei auf den beruflichen Themen. Z. B. wie gehen andere mit den Kunden und deren Mitarbeitern um, was sind die neuesten Insider Infos von den verschiedenen Unternehmen, wie sieht es bei den anderen mit den Einsatzorten und Arbeitsbedingungen aus und vieles mehr. Es wird wie immer ein interessanter Abend mit einem umfangreichen Erfahrungsaustausch werden, der einen auch beruflich weiterbringt. Mit dem DBITS e.V. wollen wir die Anerkennung von IT-Freiberuflern in der Gesellschaft und Politik vorantreiben. Dort gibt es leider noch einen sehr großen Aufhol- und Aufklärungsbedarf und damit viel zu besprechen und zu erfahren. Des Weiteren bietet uns der Verein ein breites Netzwerk an Leuten mit den gleichen Zielen und Problemen. Aber wie gesagt, das Ziel ist ein schöner, informativer Abend, es gibt kein Mitgliederzwang. Nimm teil, ich freue mich schon auf Dich! Viele Grüße und eine gute Zeit bis zum nächsten Freitag!

Agenda * 18:15 Welcome to the PUB (Python Users Berlin) – setting up * 18:30 Presentation by CorrealAid * 20:30 Lightning talks * 20:45 Social gathering (hang out afterwards to chat) The Python User Group will be joined by the CorrelAid Berlin Local Chapter to present an upcoming opportunity for volunteers. We will share what CorrelAid is, and about the upcoming project with NABU: a hands-on, community-powered data project examining the distribution of the native European hornet and the spread of the invasive Asian hornet across Germany 🐝 The session will be hybrid, so online participation will be possible. To register online, please use this link: https://correlaid.org/veranstaltungen/lc-berlin-nabu-project ⚡️ Lightning talks As always, we'll still have time for lightning talks (short 5 minute presentations). Please bring your ideas and inspirations with. Additional links: * https://correlaid.org/

Join the CONNECTED Westerville Mastermind Group for a dynamic afternoon of B2B networking! This event is perfect for professionals looking to expand their business connections, share insights, and foster collaboration within the community. Whether you are a seasoned entrepreneur or just starting out, this event offers a valuable opportunity to exchange ideas, build relationships, and grow your network in a supportive environment. Connect with like-minded individuals, explore potential partnerships, and discover new opportunities for professional growth. Don't miss out on this chance to enhance your business network and take your career to the next level with CONNECTED Westerville Mastermind Group! We meet the 4th Monday of every month from 11am-1pm. Welcome and general networking from 11am - 11:30am with core meeting 11;30 - 12:30 and a final round of networking from 12:30 - 1pm.

Discover Kiro, AWS’s innovative development environment that adapts to your workflow. Whether you prefer specification-driven development or a more intuitive, vibe-based approach, Kiro empowers you to build applications your way. In this session, speakers will explore Kiro’s core functionality and its evolution through re:Invent 2025, along with demonstrations of prompts used to create APIs, hooks, and steering documents. In the latter part of the session, watch as we build a complete example from scratch, showcasing Kiro’s agentic AI workflow in action for spec-driven development and vibe coding. What You'll Learn - Core Kiro concepts and development philosophy Feature evolution: pre and post re:Invent 2025 Practical examples: API creation, hooks, and steering docs Live coding demonstration with real-time problem solving Who Should Attend - Developers, solutions architects, and technical leaders interested in modern AWS development tools and AI-assisted coding workflows. **Speakers Bio:** Matthew Jorat: Matthew Jorat is a Customer Solutions Manager at AWS with nearly three decades of expertise in AI, cloud transformation, migration, modernization, IT, technology, and business. His career spans infrastructure engineer, solutions architect, security auditor, customer success director, support and services director, and operations officer. He was an early adopter of AWS services as a customer, and his current role at AWS uniquely blends his technical and business skills as he partners with executive teams to translate strategic priorities into measurable business outcomes through cloud adoption, AI implementation, and operational excellence. Matt leads end-to-end AI initiatives for enterprise customers, identifying high-impact use cases and maintaining relentless focus on measurable ROI. He holds eight AWS certifications and serves as Adjunct Professor at Franklin University teaching cloud computing and AWS architecture. His expertise encompasses GenAI, agentic AI systems, migration, modernization, and optimization strategies that drive transformation at scale. [https://www.linkedin.com/in/mattjorat/](https://www.linkedin.com/in/mattjorat/) Girish Bhatia: Girish Bhatia is a seasoned technology delivery leader with deep expertise in cross-domain program management. He holds multiple AWS certifications, including AWS Certified Solutions Architect – Associate, AWS Certified Developer – Associate, and AWS Generative AI Practitioner, and is also an AWS Community Builder. Girish brings over two decades of experience in the information technology industry. Throughout his career, Girish has led major technology-driven business transformation from modernizing on-premises applications to driving large-scale cloud migrations. His work includes API-based integration platforms, data-center and mainframe modernization, and enterprise cloud adoption initiatives. Based in Columbus, Ohio, Girish works at a tech-forward fintech company. He is passionate about AWS serverless architectures, Generative AI and emerging cloud technologies. An avid learner and builder, he continues to explore and apply the latest innovations in AWS to help organizations accelerate their digital transformation. https://www.linkedin.com/in/girishbhatia/[https://www.linkedin.com/in/girishbhatia/](https://www.linkedin.com/in/girishbhatia/) **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

Drake Lundstrom is presenting: Code Anywhere by Talking to your Phone Abstract: Have you heard the trend of people deploying code anywhere from checkout lines to doctors' offices? In this talk, you will learn how to talk to your phone and have an app on Azure to show your friend 5 minutes later. The basic DevOps tools you already know, plus a little bit of AI magic, are all you need! If you want to follow along, the demo will be in Azure with GitHub Actions and GitHub Copilot, and you can have it set up on your phone by the end of the session. Just come in with an Azure account and a GitHub repo. Join us for pizza, drinks, and networking @ Improving's office. Doors open at 5:45.

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.

**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** TBD **YouTube Link** TBA

## **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! ***

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/cbus-hug-2026/