Smalltalk

Liebe JUG-Mitglieder, wir möchten Euch herzlich zu unserem nächsten Stammtisch, der jeden ersten Dienstag im Monat stattfindet, einladen. Alles weitere kann im unserem Blog unter http://www.jug-berlin-brandenburg.de/ gefunden werden. Viele Grüße Sandra, Jan, Jörg und Oliver

Erlerne Meditations- und Entspannungsverfahren kennen und sorge damit für mehr Bewusstheit und Stressreduktion in deinem Alltag.

Wir bieten allen Interessierten die Möglichkeit, mit Elektronik zu basteln. Workshops und Vorträge zu verschiedenen Themen rund um Elektronik und Software sind willkommen. Von Arduino bis zu komplett selbst entwickelten High-End Schaltungen sind wir für alle kreativen Ideen offen. Wir haben auch Gruppen rund um das Nähen, Programmieren, Retro Computer. Wir treffen uns immer am Dienstag und am Freitag ab 18:00 Uhr. Egal ob Anfänger oder Profi – hier seid Ihr jederzeit Willkommen. Ihr könnt mit anderen fachsimpeln oder auch mit unserer Hilfe Eure ersten elektronischen Gehversuche starten. Wenn zeitgleich in den vorderen Räumen Workshops oder Vorträge stattfinden, kann hinten Werkstattbetrieb stattfinden.

What's a great way to **have fun**, **meet people** and **explore Berlin**? *Hint:* It's happening in **Kreuzberg (Oranienstr.)** on **Tues. May 5th**. *Answer:* The next **Quiz Walk!** Join a team, walk from clue to clue and answer ca. **15 new questions** about music, sports, culture, movies/TV, history, geography, science etc.! ― It's a great way to **meet people** ― ― Learn exciting things at these **fun, interactive quizzes** ― ― Get to know **a Berlin neighborhood** (Kiez) better at each event ― ― **Use your knowledge** and help your team win ― ― Afterwards, **meet up to chat**, and find out the **answers** ― **How it works:** We meet on **Oranienstraße**, just north of **U-Görlitzer Bahnhof** (U1/U3 - see **Start** below) and form **teams of 4** players. Then we **walk from clue to clue** along a 2 km route. **Use teamwork** to answer the questions or **ask people for help**! See and answer the questions on one smartphone per team and follow the **results** **as you play**! No rush – speed doesn't count. **Start:** **Oranienstraße 206, 10999 Berlin** We'll meet on the south side of the street, in the litte triangular park. **Note:** Please bring a **2€** donation to cover the costs of organizing. And please be on time, as we leave the meeting point within 10 minutes.

Join us for our next Berlin Collaborative Modelling session — a hands-on workshop where we'll build a Context Map from scratch. Context Maps make the big picture of a system explicit: which bounded contexts exist, how they relate to each other, and where the friction, dependencies, and power dynamics between teams actually live. They help you make better decisions about integration strategies, team ownership, and where to invest in clean boundaries versus where to accept pragmatic compromise. To get there, we'll use Event Storming as our starting point — laying out domain events to discover natural clusters of behavior, then drawing boundaries around them to identify candidate bounded contexts and subdomains. From there, we'll sketch out the relationships between contexts and discuss what patterns like Customer/Supplier, Conformist, or Anti-Corruption Layer look like in practice. What to expect: This is a collaborative, stickies-on-the-wall kind of evening. No laptops needed, no prior DDD experience required — just curiosity about how to make sense of complex systems. We'll work through a shared example domain together, so everyone starts from the same place.

**WICHTIG: Die Anmeldung über Meet-up allein ist nicht ausreichend. Bitte zahle spätestens 1 Tag vor der Veranstaltung im Kultur- und Freizeitbüro des Goethe-Instituts (Neue Schönhauser Straße 20, 10178 Berlin, 2. Hinterhof) in bar, um deine Anmeldung abzuschließen. Wir können leider keine anderen Zahlungsmethoden annehmen.** Der Kurfürstendamm, das KaDeWe und West-Berlin – das klingt erst einmal glamourös. Doch was verbirgt sich wirklich dahinter? Bei diesem Abendspaziergang erkunden wir gemeinsam die bedeutenden Orte des 20. Jahrhunderts im alten Stadtzentrum West-Berlins. Dabei werfen wir auch einen Blick auf die Schattenseiten, die Touristen oft verborgen bleiben.

We are back in the c-base! Do you already run NixOS and want to talk to other people or want an introductory session with some NixOS users. Just bring your machine! Usually there are no topics, we just sit in front of our computers, talk about stuff, debug some problems or review some PRs on nixpkgs. There are drinks usually available from the c-base bar. If you can't find us. just ask around or ask in irc (#krebs on hackint)

Join us for a hands-on, collaborative **4-hour workshop** where we use LLMs to code. We will be implementing the following 3 exercises: [connect four](https://www.hellointerview.com/learn/low-level-design/problem-breakdowns/connect-four) [amazon locker](https://www.hellointerview.com/learn/low-level-design/problem-breakdowns/amazon-locker) and [elevator](https://www.hellointerview.com/learn/low-level-design/problem-breakdowns/elevator) ### **What we will do** We will use the LLM (any free one, like chatGPT) to write code that solves a given problem. Our goal is to not write code by hand, and to produce an application that passes a set of specifications. ### 🛠 **Share ideas about agentic coding** We will be practicing our agentic coding skills: * bring a laptop with Java or Golang installed * know how to code in either Java or Golang * share and explore ideas about how to use LLMs to create production-ready applications ### 💬 **Atmosphere & Logistics** The workshop is **free**. There will also be a 20 min pause, if you want to order snacks.

**Relax. Connect. Create. ☕** After a full week of work, meetings, study sessions and life in fast-forward, it’s time to slow down. Join us this Saturday afternoon in Berlin for a relaxed coffee hang-out where this week's agenda is good company & warm drinks. You're also invited to bring some boardgames, drawing/coloring materials (I will bring an adult coloring book) **What’s the plan?** We’ll meet in a cosy spot, draw, chat about everything and nothing, swap stories and simply enjoy the moment. No pressure. No formalities. Just a bunch of friendly people sharing a Saturday coffee. **Who’s welcome?** Everyone! Whether you’re a Berliner born and raised, newly arrived in the city, from Germany or abroad, if you like meeting open-minded folks and spending some relaxed time—come join us. **When & how?** Saturday afternoon. Detailed time and place in our Telegram group. ➡️ Join us on Telegram: [https://t.me/berlinsaturdaycoffee](https://t.me/berlinsaturdaycoffee) Hop in, say hello, and we’ll share the final details. **Why join?** * Because you deserve a break. * Because you enjoy being creative. * Because you enjoy boardgames * Because meeting new people sparks fresh energy. * Because coffee tastes even better when shared. * Because Saturday afternoons were made for this. Respect and Safety: There is always at least one organizer present at every meetup. If you ever feel unsafe or bothered by someone’s behavior, you can reach out to an organizer privately. Your identity will remain confidential, your concern will be taken seriously, and no inappropriate behavior is tolerated — anyone making others feel uncomfortable will be removed from the group immediately. We hope to see you there. Bring yourself, your smile, drawing materials, your stories—or just your comfy self. Let’s make Saturday a little more laid-back, a little more social and a lot more nice. See you soon! —Your Saturday Creative Coffee Crew ☕

We will be hosting our May Meetup. Thanks to Amazon for sponsoring us. Please note that you have to show sign up with your real name and show a Photo ID to the building security before entering the building. Every visitor will have their photo taken that will be printed on their paper visitor badge. This is a requirement from the building security. If you are not ok with that, please do not sign up. You can not bring a +1, everyone needs to sign up. Please only sign up if you plan to come, we will keep notes. *Excited to announce our talks:* **pg_lake: Unifying transactional and analytical data with Postgres** by Celeste Horgan, Sr. OSS Developer Advocate at Snowflake. The common wisdom goes: data is either transactional or analytical, and workloads are OLTP and OLAP-shaped to match. The reality of generating and using data is different, and often we need a bit of both. The pg_lake extension brings OLAP workloads to OLTP Postgres. This talk will explore the pg_lake extension, including how to build it, and demos of using it with modern data workloads in object storage like Amazon S3. We’ll create simple data pipelines with no ETL and high performance analytics. **I Didn't Know Postgres Could Do That!** by Robert Treat, Principal Database Engineer at AWS and PostgreSQL Major Contributor. PostgreSQL is often thought of as "The Database for DBAs", but what more and more developers are finding out is that what makes Postgres "The Worlds Most Advanced Open Source Database" is its wide array of features, many of which are really geared towards engineers building applications on top of Postgres. In this talk, we'll look at some of the features in Postgres you may not have seen in other database systems, and talk about how you can make use of those features in your applications. Queries, indexing, data types, and more will all be up for discussion as we show you examples of just what Postgres can do.

Berlin is no longer so dark! Spring has come! 🌷 Let's catch those fresh new rays of sun ☀️. While walking together we can enjoy a nice conversation, get those steps in, increase our serotonin production as well as sync the circadian rhythm. It's also a lovely break from work. I would like to invite you to our mental health walk event. Agenda: 12:10 We meet at Schöneberg Park next to the fountain with the golden deer statue ("Der goldene Hirsch"). 12:15 We walk to Volkspark Wilmersdorf 12:50 We arrive back in Schöneberg Park, at the golden deer statue. We walk at every weather, so make sure to dress properly! Looking forward to meeting you at our lunchtime walk. Marija Please note\*\*:\*\* This gathering is meant for connection and conversation, and is not a replacement for therapy or professional mental health support.

Agenda * 19:00 Welcome to the PUB (Python Users Berlin) – setting up * 19:15 Impressions from PyCon DE and PyData Darmstadt * 19:45 Workshop on adapting to LLMs as Python Programmers * 20:45 Social gathering (hang out afterwards to chat) This month host Travis will be presenting on his key takeaways from the recent PyCon DE & PyData Darmstadt, including personal highlights from the conference and which talks you should watch later on YouTube. Afterwards, Travis will lead a structured conversation on how we as Python programmers are coping with the ever changing technologies around us, namely LLMs like Claude-Code, OpenCode, Gemini, etc. Think of it as an unofficial LLM support group for Pythonistas! ⚡️ 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://2026.pycon.de/

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

***Community Partnership with 42 Berlin - Main Regestration*** ***https://www.eventbrite.de/e/mai-ist-fur-ai-opening-event-42-berlin-tickets-1984054863506?aff=ebdsoporgprofile*** Welcome to the future! Join us at the 42 Berlin campus to celebrate the official launch of "Mai ist für AI 2026". Let's talk AI. **Berlin’s most critical exploration of the AI age is back.** After last year's massive success, 42 Berlin is proud to kick off **Mai ist für AI 2026:** a month-long collision of code, art, and ethics designed to challenge the paradigm shifts defining our tech-driven future. This opening event is designed to look beyond the hype. We are bringing together developers, artists, industry leaders, and the 42 community not just to celebrate what is possible, but to ground the conversation in critical thought. **Agenda:** **18:00** – Doors Open **18:30** – Welcome: The mAI Manifesto **18:40** – **The Integrity Stack: Aligning Research, Policy, and Deployment for Reliable AI** * [Carmen Loew](https://www.linkedin.com/in/carmen-loew/ "https://www.linkedin.com/in/carmen-loew/") \- Founder and COO of Sapper Intelligence * [Dat Daryl Ngo](https://www.linkedin.com/in/datdarylngo/ "https://www.linkedin.com/in/datdarylngo/") \- AI Architect and VP of Strategy at Arize AI * [Dei Vilkinsons](https://www.linkedin.com/in/delta/ "https://www.linkedin.com/in/delta/") \- Founder at HASH * [Michael Bornholdt](https://www.linkedin.com/in/michael-bornholdt-pi314159/ "https://www.linkedin.com/in/michael-bornholdt-pi314159/") \- Senior AI Solutions Architect Public Sector at Merantix Momentum * [Monika Kwiatkowski](https://www.linkedin.com/in/datascienceberlin/ "https://www.linkedin.com/in/datascienceberlin/") \- Doctoral Researcher in Machine Learning at Technical University Berlin **19:20** – mAI Programme Outlook **19:30** – Networking **20:00** – Performance & Dance **22:00 – End of Event** Whether you are actively coding the future or simply curious about the intersection of human and machine, join us on campus to connect with Berlin's brightest tech minds. We host the opening Event with [Neo4j](https://neo4j.com/ "https://neo4j.com/") as offical Community Partner. Space is limited. Secure your spot now and be part of the conversation.

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/

[The Board Walks](http://www.theboardwalks.com/) are for curious people who love deep conversations. If that sounds like you, **bring a thoughtful topic** and join us for a 5-mile walk (10,000+ steps!). **HOW IT WORKS** **Step 1: Bring a topic** Before you arrive, think of **one** topic you want to explore. A question. A thought that's been on your mind. An obsession you want to geek out on. This is your ticket to the event. **Step 2: Circle up & share** We gather in a circle. Your friendly walk host gives a speech to set the tone. Everyone shares: your name, what you're grateful for, and your topic. That's it. 60 seconds. **Step 3: Walk, talk & float** We walk 5 miles. You naturally drift into conversation with 2-3 people at a time, pulled by topics that spark your curiosity. When you're ready to move on, just say: "I'm going to float!" **Step 4: Feel more alive** Two hours flies by. You're back where you started — but you feel different. More alive. More energized. More connected to yourself and others. That's why regulars join 20+ times. *For more details, read our [Orientation Guide.](https://www.theboardwalks.com/orientation)* **HOW TO BRING A GREAT TOPIC** A great topic = something you're genuinely curious about. Recent topics include: * "What are you passionate about right now?" * "What makes a good friend?" * "What's a belief you used to hold that you've completely changed?" * "How do you want to be remembered?" * "What would you do if money wasn't a factor?" Think of your topic like the dish you're bringing to our conversational potluck. If everyone brings an A+ dish (i.e. energizing, uplifting, expansive), we'll all walk away feeling lighter and brighter. **WHAT TO EXPECT** This isn't a fitness event with casual chitchat. It's a walking think tank where we explore life's big questions together, beyond small talk. *If you're looking for light banter or a standard networking event, this probably isn't the right fit.* But if you crave depth, genuine connection, and conversations that make you feel alive? You'll love it here. **FAQ** * Wear casual athletic attire and sneakers. It's a long walk! * We have multiple first-timers at each event. We work hard to create a welcoming, inclusive, clique-free space. * We welcome people of **all** ages, backgrounds, and industries who align with the [intention](https://www.theboardwalks.com/ground-rules) of this space. * Rain or shine, we've been out here nearly every week since July 2022. If the event is cancelled, we'll let you know. * Dogs, babies in strollers, parents, and friends are welcome — please text/email them the event link so they can RSVP and prepare a topic! **LOGISTICS** * If you'll arrive over 10 minutes late, we suggest skipping the event. It's hard to find us once we start walking, and your host can't answer messages during the event. * This walk is designed for everyone to *move together at the same steady pace* (about 20 min/mile). This format works best when the whole group moves in unison. If you have mobility limitations, we kindly encourage you to find an event better suited to your needs. * Read our [Orientation Guide](https://www.theboardwalks.com/orientation) for full details. * If you enjoy the event, send **[this](http://www.theboardwalks.com/)** to a friend or sign up for our **[newsletter](https://theboardwalks.beehiiv.com/)**. We're in multiple cities with more on the way. 🤠👋 **IF YOU WANT TO GO DEEPER...** [The Board](https://stan.store/ellebeecher/p/the-board) is the next step: a high-trust collective for renaissance people devoted to creating, connecting, and building lives that light us up. * This is a global HQ for people who crave big talk, deep connection, and dream collaborations with people across industries. If the walks feel like a spark... The Board is the fire. Apply [here](https://stan.store/ellebeecher/p/the-board).

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

The Alliance is part of the Greater Central Ohio Chapter of the Barbershop Harmony Society. We are an all-voices chorus dedicated to providing an inclusive environment for all those who love to sing, regardless of their race, gender identity, sexual orientation or musical background. The Alliance is the first and only all-voices barbershop chorus in Central Ohio. **Who:** Anyone with a passion for singing at a high level. Previous barbershop chorus/quartet experience not required. **When:** The Alliance rehearses weekly on Thursdays from 7pm-10pm. **Where:** Lord Of Life Lutheran Church: 2480 W Dublin Granville Rd, Columbus, OH 43235 To become a full member of The Alliance, we welcome you to start by visiting us for a few rehearsals to experience the group and sing with us! Then, you may begin the 2-part audition process for membership: the assessement, and audition. We strive to make our auditions as stress-free as possible to help you let your best singing self shine.

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month John Lairson will share a notebook describing the Alpaca (Paper) Trading API and discuss different algorithms for evaluating stock trades. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

Ciao a tutt\*! Let's meet Monday at 6.30pm at the Upper Arlington Library (**Tremont** Branch) in **Meeting Room A** to speak in Italian for 1 hour.

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!