Software Architecture

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!

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.

👋 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.

*This event is a collaboration with our friends from Domain Driven Design Berlin, check out their Meetup page [here](https://www.meetup.com/de-DE/domain-driven-design-berlin/) and sign up there!* \-\-\-\-\- **About the evening** 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. 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! **RSVPS:** **Please sing up on the event page from [Domain Driven Design Berlin](https://www.meetup.com/de-DE/domain-driven-design-berlin/)!** \-\-\-\-\-\- **Code of Conduct** We adhere to the [Berlin Code of Conduct](https://berlincodeofconduct.org/) to ensure a welcoming and respectful environment for all participants. The event space operates under largely compatible [Thoughtworks Meetups & Events CoC](https://www.thoughtworks.com/en-de/about-us/events/code-of-conduct-germany). **Accessibility** The Location is accessible for wheelchair users. This includes the entrance (no steps to get into the location), toilets and the stage.

Welcome to our cosy Godot Engine Community Meetup! This is not a structured meeting, but rather a friendly get-together. We will hang out, chat and maybe show some of our current projects! 🦜 Regardless if you are an artist, designer, programmer, beginner, hobbyist, professional or anything in between: join us for sharing knowledge, creating art together, coding together, joining game jams together and having fun! 🌼 This meetup will happen at [c-base](https://c-base.org), Rungestraße 20, 10179 Berlin. 🛰️ You can also join us on [our Discord Server](https://discord.gg/Sm3CgrqqQa). ☎️ Follow us on [Mastodon](https://mastodon.gamedev.place/@GodotUserGroupBerlin) for updates. 📢 Also check out [our website](https://godot.berlin). 🌐 Please be [excellent to each other](https://godotengine.org/code-of-conduct/)! 🕊️

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

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/

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.

Chitta Walks is for people whose days move fast, while the mind never fully lands. Thoughts keep looping even when nothing is urgent. The body moves, but attention is elsewhere. Over time, this disconnect drains clarity and ease. This walk is a simple reset. We meet in Berlin’s Tiergarten and walk at a gentle pace. Parts of the walk are in silence, with light guidance and a few short prompts. The walk itself is the practice, bringing body and mind back into the same moment. No apps. No performance. Just a clear space to slow down and notice what is happening. If you want to slow down without withdrawing from life, join a Chitta Walk. ✨ **What to expect (approx. 90 minutes):** * A short arrival and orientation * A guided silent walk (phones off, no conversation) * One concise science-based impulse on attention or stress * Optional reflection in pairs or small groups * A simple takeaway or experiment for daily life 🚶**Who this is for:** * Professionals, creatives, and people in transition. * People who feel mentally busy and want more clarity and balance. * Those curious about mindfulness, but grounded and practical. * Anyone comfortable with silence and gentle self observation. 🔔 **Practical notes:** * Duration: 60-90 minutes * Wear comfortable shoes and weather-appropriate clothing * No prior experience needed * Group size is limited to keep the space quiet and focused 🧭 **Facilitator:** My name is Partha Sarathi, you can call me PS. I have lived in Berlin for over 12 years. With a background in physics and materials science, my interest in mindfulness grew through personal experience with stress and health challenges. I facilitate the space and structure of the walk, inviting shared exploration rather than instruction. 🤔 **Why Chitta Walks?** Chitta is a Sanskrit word referring to the mind or field of awareness, used here in a practical, non-religious sense. Chitta Walks is about noticing how the mind works by slowing down and walking together. Mindful walking makes thought patterns visible in real time, while moving and sensing in the world. The name points to a simple capacity: noticing what is happening in the mind without immediately trying to fix, judge, or optimize it. 🌿 **Possible effects:** A calmer nervous system. Clearer attention. A felt sense of being more present in your body. Subtle insights into how your mind reacts under everyday conditions. A quieter, more grounded way of moving through the city. **Come as you are. Walk. Notice. Leave with a little more space inside.**

Bringt gute Laune, schönes Wetter und Interesse mit. Wir treffen uns je nach Tour an unterschiedlichen Orten. Am 1. April 2018 um 15 Uhr gehts los am Eingang zur Akademie der Künste am Pariser Platz neben dem Brandenburger Tor.

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

There’s a peace and relaxation possible for everyone, that can occur with total ease, with a simple body process, called Access Bars ® Access Bar is like hitting the delete button on your computer’s hard drive. Negative thought patterns and mental chatter can be released and a space for peace, ease and new possibilities opens up. Best, everyone can learn this body process in a one day class. You can give the Bars® to your family and friends and to your clients. And of course you can let the Bars run also on yourself. Access Bars ® and Bodyprocess classes in English take place once a month, classes in German twice a month. Just ask for your desired date. Would this class be a contribution to your body, to your life, your business? Then I would like to have you in a one-day Access Bars. Consider this your invitation to a totally different paradigm for healing, change and transformation in all aspects of your life. The Access Bars class fee is 380 Euro, Practitioner License, Manual, Charts, food and drinks included. PLEASE NOTE THAT REGISTRATION IS ONLY POSSIBLE BY PHONE. For more information please visit my website: https://www.i-feel-so-good.de/home-en.html What happens in the brain during a Bars Session: https://www.youtube.com/watch?v=DgGbFRjqQPk If you have any question or you want to book a session, do not hesitate to contact me. Once a week we have an Access Bars ® evening that gives you the opportunity to exchange the Bars® and to meet other practitioners. ®

A space for working on projects & learning new stuff together. 💻☕️ Please RSVP if you intend to join, as we have limited space. 😊

**🚨🚨🚨 ATTENTION: we moved to luma. please RVSP [HERE](https://luma.com/12min.me_Berlin)🚨🚨🚨** # ​[12min.me](https://12min.me/) START UP is a brand new morning format for bold ideas and fresh perspectives ​Berlin Startup Community, we’re launching something new. Together with betahaus, we’re bringing the [12min.me](http://12min.me/) spirit into the morning. ​[12min.me](http://12min.me/) STARTUP is a three-part breakfast series, embedded in the well-known betabreakfast format. Instead of three speakers in one evening, we do things differently. ​One morning. One speaker. One focused impulse. ​12 minutes. One voice. Zero fluff. ​Join us for the first edition of [12min.me](http://12min.me/) STARTUP, a compact morning session for founders, operators, creatives and everyone building things that matter. ​**✔️ What to expect** * ​One inspiring startup-related talk * ​12 minutes of sharp insight * ​Curated exchange over breakfast * ​The familiar [12min.me](http://12min.me/) energy, just earlier in the day# ​🚀 **The formula stays the same** * ​12 minutes talk * ​12 minutes of Q&A * ​12 minutes of networking ​The familiar [12min.me](http://12min.me/) energy, just earlier in the day ​**🎤 Our speakers** **Speaker 1 @March 5** **[Jonathan Hegel](https://www.linkedin.com/in/jonathan-beisiegel) from [FW Systems](https://www.linkedin.com/company/frachtwerk/)** Jonathan is the CEO of FW Systems, a specialized system house for open source solutions and IT services with a fixed-price model. After years in traditional IT, where he regularly had to work night shifts due to emergencies, he decided to do things better—for customers and for IT professionals. Today, he help SMEs transform their IT from a constant work in progress to a reliable infrastructure they can depend on. **Jonathan\`s talk: "How we are completely rethinking system administration as a service for your company"** Companies cannot possibly do everything themselves. So things like accounting, logistics, and IT are outsourced to external service providers. In the IT sector, system houses have been doing very well for themselves in recent decades! Every little thing is charged for, and if there are any errors, the customer is expected to open a ticket. We are rethinking this! We are applying the “as-a-service” concept from Airbnb, Uber, and Everstox to system administration and taking responsibility. Jonathan will show how this works in his talk. ​ **Speaker 2 @March 12** **[Anne Biedermann](https://www.linkedin.com/in/anne-biedermann/), independent wealth partner for women** Anne has extensive experience across venture capital, single-family-office & HNWI investing, and early-stage operations. She works with investors who are building, inheriting, or stewarding wealth on how to allocate capital with clarity — particularly where venture capital intersects with long-term wealth strategy. Anne also invests personally, giving her a practitioner’s perspective on capital allocation decisions. **Anna\`s talk: "Not All Capital Is the Same: Decoding Investor Behavior"** Founders often assume all investors evaluate risk, timelines, and returns the same way and that assumption is costly. This session breaks down how funds, family offices, and individual investors actually make decisions, where founder–investor misalignment typically begins, and how founders can better position themselves for the right kind of capital, not just any capital. **Speaker 3 @March 19** **[Immo Ait Stapelfeld](https://www.linkedin.com/in/immoaitstapelfeld/), Co-Founder & CEO at [913.ai](https://913.ai)** **"From Legal Complexity to Practical AI. How We Help Regulated Industries Use AI Without Losing Control"** This presentation tells the story of Immo’s transition from a trained lawyer working in mass proceedings to an entrepreneur building AI products for regulated industries. His legal background, combined with hands-on experience as a founder, shaped a pragmatic view on AI. not as a disruptive replacement, but as a controlled and compliant tool. At[ ](http://913.ai)[913.ai](https://913.ai), this perspective enables conservative organizations such as insurers to enter the AI era in a way that respects regulation, responsibility, and existing teams while still unlocking real efficiency gains. ​📅 **The series at a glance** [12min.me](http://12min.me/) STARTUP consists of three independent sessions. Please follow the luma link for registration: * ​[March 5, 2025](https://luma.com/yo32qaud) * ​[March 12, 2025](https://luma.com/y0wytmck) * ​[March 19, 2025](https://luma.com/cucrx8is) ​Each session has its own Luma page and can be attended individually. ​📍**Event details for the whole series** * ​**Location**: betahaus Kreuzberg, Rudi-Dutschke-Straße 23, 10969 Berlin * ​**Time**: Doors open 9:30, Start 10:00, End 11:00 * ​**Entry**: Free entry including breakfast and drinks * ​**RSVP:** via [Lu.ma](http://lu.ma/) to save your spot as spots are limited ​**Why mornings** Because good ideas don’t only happen after work. We believe in strong insights, respectful use of time and real conversations, even before noon. ​​🎈🎈🎈 Join our WhatsApp group for more details and to engage with the community - [HERE](https://chat.whatsapp.com/FWphInbgYaKJUGv7Uusum9) we go. 🎈🎈🎈 ​We’re looking forward to kicking off this new format with you. Lots of love, Your [12min.me](http://12min.me) Berlin crew [Sandra](http://linkedin.com/in/sandrakarner), Olha, Silvana, Ben \*\*\* **Media rights (picture and video recordings):** Participants agree that photos and video recordings made during the event may be used without any claim to compensation and without any time or space restrictions. The rights to image and video material are transferred to the organiser or the representatives of the press or other parties distributing image and sound material who are present on site, without exception and without any time or place restrictions.

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

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

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

**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

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.

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!

Window functions have nothing to do with the Windows operating system but provide a “window” to a result set when used in SQL queries. They are powerful, set-based methods to view data in unexpected ways. Window functions provide easy, set-based solutions to solve some common problems: * Using running totals * Performing operations in intervals * Identifying data gaps and islands * Performing aggregates without losing detail Many people are confused by window functions and do not know how to use them properly. This session will explore window functions, how they work, and how to use them. Demonstrations with several examples will solidify how window functions can simplify queries and make them more powerful.