GitLab

English, see below. **Update: Wir treffen uns im Juni ausnahmsweise bereits am Montag, den 8.6. (von 18 Uhr bis ca. 21 Uhr).** Neben unserem gewohnten Stammtisch habt ihr dieses Mal die Gelegenheit, Bitcoiner aus Korea kennenzulernen. Vor Ort sind der Gründer von Saturday Block (koreanische, Bitcoin-only Bildungsplattform), die Entwickler der Corn Lightning Wallet sowie die Entwickler der Coconut Wallet (watch‑only) + Coconut Vault (offline Signer) — außerdem Leiter des Bitcoin Center Seoul. ____ Willkommen beim Bitcoin Meet-up im Café Holzmarktperle (Holzmarktstraße 25). Die Berliner Community kann einfach nicht genug davon bekommen über Bitcoin zu reden. :) Deshalb bieten wir dieses Meet-up als weitere Option neben dem etablierten “Berliner Bitcoin-Stammtisch @ Friedel Richter” an. Jeder ist willkommen - Bitcoin-Anfänger, Enthusiasten, etc. Wir freuen uns auf den gemeinsamen Austausch mit anderen Plebs in lockerer Runde und gemütlicher Atmosphäre und beantworten auch gerne eure Fragen. Natürlich könnt ihr im Café mit Bitcoin ₿ / Lightning ⚡bezahlen. Dies ist der richtige Ort für Menschen, die glauben, dass Bitcoin die Welt verändern kann und Teil der nächsten großen Revolution in der Finanzwelt sein wird. *** **Update: In June we will meet a bit earlier than usual. The meeting will take place on June 8th, from 6 to approx. 9pm.** In addition to our ususal meetup you'll have the opportunity to meet Korean Bitcoiners. Joining us are the founder of Saturday Block (a Korea-based, Bitcoin-only culture platform for education and meetups), the developers behind the Corn Lightning Wallet, the Coconut wallet (watch-only) and Coconut Vault (offline signer), also running the Bitcoin Center Seoul. ____ Welcome to the Bitcoin meet-up at Café Holzmarktperle (Holzmarktstraße 25, Berlin). Since we can’t get enough of talking Bitcoin we are offering this meet-up as a another option in addition to the established Berliner Bitcoin-Stammtisch @ Friedel Richter. Everyone is welcome - Bitcoin beginners, enthusiasts, … you name it. We are always happy to meet with other plebs, teach, talk and help! Payment in Bitcoin ₿ / Lightning ⚡accepted! This is the place to be for people who believe that Bitcoin will rock the world and will be part of the next big revolution in the financial world.

**PLEASE RSVP HERE:** https://luma.com/x1h3sb59 \*\* ​Registrations: 5:30 PM - 6:15 PM (food & drinks are taken care of) **The event will also include a networking break between the talks.** ​This event is kindly hosted at the offices of our partner, **Netlight Consulting.** ​ **​Will Martin** ​*AI Evangelist at Dremio & Author of the upcoming* AI for Dummies (and actually) ​AI is everywhere — but what does it actually mean in practice? ​Will will give a practical, hype-free walkthrough of modern AI and how it fits into today’s data stack and lakehouse architectures. ​🚀 Topics include: * ​What Agentic AI is — and how it differs from LLMs * ​How LLMs work under the hood * ​Fine-tuning vs RAG vs prompt engineering * ​Connecting AI to your data, APIs, and lakehouse with MCP * ​Real-world benefits, risks, and implementation considerations ​A clear introduction to how AI really works — and how to use it effectively. *** ## ​Olena Kutsenko ​*Staff Developer Advocate, Confluent* ​Olena will explore what it really takes to move data from Kafka into Apache Iceberg tables reliably and at scale. ​🔍 Topics include: * ​Schema evolution & data normalization * ​Exactly-once guarantees & late-arriving events * ​Partitioning & table maintenance * ​Trade-offs between Kafka Connect, Flink pipelines, and custom ingestion approaches ​Using Confluent Tableflow as a practical example, this session focuses on building robust streaming-to-lakehouse architectures — regardless of tooling. *** ## ​Bjarne Schröder ​*Software Engineer, STACKIT* ​We're excited to welcome Bjarne from STACKIT, where he works on Data & AI product offerings. ​Having transitioned from Data Engineering to Software Engineering, Bjarne brings experience from both perspectives of the data ecosystem—first as a user of cloud-native data services and now as someone who helps build and deliver them. ​Passionate about connecting with people and exploring technology, Bjarne enjoys diving into all kinds of nerdy topics in his free time and cycling around his hometown of Cologne, Germany. *** ## ​Andrew Madson ​*Head of Developer Relations, Fivetran* ​Andrew has spent more than a decade leading analytics and ML teams across organizations including J.P. Morgan Chase, MassMutual, and Arizona State University before moving into DevRel and developer community leadership. ​He is: * ​Founding Head of DevRel at Fivetran * ​Co-author of *Apache Polaris: The Definitive Guide* * ​Speaker, educator, and creator with a 250K+ global audience * ​A leading voice in Apache Iceberg, lakehouses, and AI-ready data platforms ​Expect practical insights on modern data infrastructure, developer ecosystems, and building AI-ready architectures. *** ## ​Alex Merced ​*Head of DevRel at Dremio & O’Reilly Author* ​Alex will walk through key ideas from his latest work on Agentic Analytics and building data platforms that actually work for AI. ​🔍 What to expect: * ​Why data silos break AI agents * ​The role of the lakehouse, federation & semantic layers * ​Apache Iceberg, open catalogs & modern architectures * ​Why AI agents need context — not just data * ​A roadmap toward autonomous, AI-driven analytics ​A sharp, architecture-focused session connecting modern data platforms with the future of AI.

### Open Platform for Writers to connect, share & grow. Together. ‍ We create a safe space to be creative, connect through writing and give and receive feedback from each other. Get ready for bringing in different writing styles and helping each other improve our own writing skills and get to know some new friends. ...for more info check out www.dna-artclub.com / follow us on IG: @nightart.club See You soon :) Love. DNA. ______ \*Members of Dair Night Art e.V. and Subscribers of DNA. Art GbR. \*\*By entering the DNA. ART HOUSE, You agree to comply with the Hausordnung of Dair Night Art e.V. and Geschäftsordnung of Dair Night Art e.V. Please ensure You review these documents thoroughly in advance.

Laboratori di improvvisazione teatrale in italiano — ogni lunedì sera. nessuna esperienza necessaria, nessun testo da imparare — si improvvisa insieme Aperto a tutti, indipendentemente dall'esperienza: che tu sia alle prime armi o abbia già calcato un palco, troverai un gruppo caldo, energico e sempre pronto a giocare. Sempre ridendo si lavora sulla presenza, sull'ascolto, sull'istinto. Ci si diverte davvero. Drop-in 20 euro: possibile iscrizione, a cicli oppure vieni quando puoi. Ogni lunedì, 19:30–22:00 · Art Space in Exile, Hotel Continental (Elsenstraße 87) Per info: [berlinoitaliaimprov@gmail.com](mailto:berlinoitaliaimprov@gmail.com)

\*This is a free event, but please [donate through Eventbrite](https://www.eventbrite.de/e/read-editing-monthly-writers-meetup-tickets-1981513291596?aff=oddtdtcreator) to support our collective if you are able! Please join us on the 2nd Monday of every month for this event, built for all of your “in between works“ by the [Read Wedding](https://www.instagram.com/readwedding/) collective. Most events for writers are focused around ***creation or performance***. Much comes between this, yet we do not always hold each other through that phase. It is perhaps expected that all of those self-questioning, unsure, multi-path moments between lightbulb idea and snap-inducing performances are to be personal and private--but they do not always have to be. We therefore offer you a space for everything unfinished. Needing bouncing around. Ready for a test run. We will meet in the back room of Cafe Cralle, ***which is a cash only***, collective-run staple of the Berlin writing and queer scene, for a more traditional meetup format than our open mic. The evening will be without any set structure of facilitation, but rather an approach determined based on who's arrived and what their goals are. You may expect some combination of solitary writing time, sharing and feedback, and guided exercises. We'd love for you to show up however you are, and with some writing materials (including your phone, if you prefer). However you arrive, so long as you are feeling curious and open, we will have something for you and your work. See you there! Brooks, Bubamarrë, Maggie & Johanna Re(a)d VVedding Kollektiv \-\-\- **NOTE: Excluding select, small workshops, Read Wedding has hosted entirely free events since we started. If you have the means and would like to support us, it goes a long way. Please consider [donating through Eventbrite](https://www.eventbrite.de/e/read-editing-monthly-writers-meetup-tickets-1981513291596?aff=oddtdtcreator).**

Andere drücken die Schulbank, wir aber wollen in gemütlicher (und realer) Atmosphäre wieder aufeinandertreffen und einen Deutsch-Spanisch-Tandemkurs aufleben lassen. Beim einfachen Zusammenkommen und kennenlernen lässt es sich schließlich viel effektiver lernen. und Spaß haben. ...

Liebe Rhetorikfreunde, Habt ihr Lust, die Kunst des Redens zu erlernen? Du kannst als Gast einfach reinschnuppern oder als Clubmitglied das volle Programme nutzen. Mithilfe eines ausgezeichneten praxisorientierten Programms kannst du einen von 11 verschiedenen Lernpfaden auswählen und in 5 aufeinander aufbauenden Stufen lernen: * frei und ohne Blackout zu reden * unterhaltsam und überzeugend zu präsentieren * souverän zu moderieren * Deine Körpersprache wirkungsvoll einzusetzen * spontan zu einem vorher unbekannten Thema zu pitchen Haben wir dich neugierig gemacht? Ganz gleich, ob du einfach mal „reinschnuppern“ oder dein Können gleich mit einer kurzen Stegreifrede unter Beweis stellen möchtest – wir freuen uns auf dich. Willkommen sind * Redebegeisterte * Redescheue * Kreative, denen die Werkzeuge zur Kommunikation fehlen * Angestellte/Selbstständige, die besser vor Publikum oder vorm Chef reden wollen Du kannst bei uns alle aktuellen Herausforderungen trainieren: * Präsenztreffen vor Publikum * Onlinetreffen * Präsentieren * Pitchen Wir freuen uns auf rege Teilnahme und Anmeldung. *** Der Eintritt ist kostenfrei. Wir beginnen pünktlich um 19:00 Uhr. Einlass ab 18:45 Uhr.

This event will feature a recap of the [GrafanaCON](https://grafana.com/events/grafanacon/) keynote, combined with fresh voices from your own community. Grafana team members walk through Grafana 13 and the most impactful improvements across the platform. Learn about how Grafana is becoming easier and safer to operate as production infrastructure, with updates that improve configuration management, recovery, and long-term maintainability. The session showcases significant advances in core user workflows, including more flexible and powerful dashboards, with improved performance. Whether you’re building dashboards, scaling Kubernetes, contributing to open source, or just getting started - this meetup is for you! **🎟 Free to attend** 🍕 Pizza + soft drinks provided 🤝 Built for connection 💡 Real talks from real practitioners **6:30 - 6:45:** Arrivals and pizza 🍕 **6:45 - 7:30:** GrafanaCON recap presentation – David Kaltschmidt **7:30 - 7:45:** Q & A **7:45 - 8:00:** Break ☕ **8:00 - 8:30:** Community lightning talks * **Usman Ahmad** **8:30 - 9:00:** Discussion and more pizza 🍕 Note that by registering for this event you consent to related event & product communications from Grafana Labs and agree to our [code of conduct](https://grafana.com/events/events-code-of-conduct/).

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.

Bist du bereit für einen Abend voller Geheimnisse, Täuschung und spannender Diskussionen? Am Mittwoch treffen wir uns zu einem neuen Mafia–Werwolf-Spielabend. Finde heraus, wer im Dorf die Wahrheit sagt – und wer heimlich zur Mafia oder zu den Werwölfen gehört. Ein Blick. Ein Verdacht. Eine Abstimmung. Und plötzlich ist jemand… raus. ⏰ Beginn: 18:00 Uhr 📍 Ort: Café Chagall 💰 Spende ab 5 € Egal ob Anfänger oder erfahrener Spieler – alle sind willkommen. Bring gerne Freunde mit und tauche ein in eine Nacht voller Intrigen, Strategie und Spaß. ‼️ Wichtiger Hinweis: Wir spielen die ursprüngliche Version von Werwolf/Mafia

Our June Meetup is coming up! Thanks to Snowflake for sponsoring us. **Please register with your real name and email addres and bring a photo id.** You will need to check in upon entry. We are happy to have David Wheeler as our speaker this time. David is ais a long-time PostgreSQL contributor, and creator of Sqitch, a database change management system; PGXN, the PostgreSQL Extension Network; pgTAP, a database test framework, and CITEXT2, the case-insensitive data type. After stints with PostgreSQL Experts, iovation, and The New York Times, he now works on PostgreSQL extensions for ClickHouse. He lives in New York City with his artist wife when they're not exchanging homes overseas. His talk is: *How to automatically release your extensions on PGXN* Today there is no one central distribution point for PostgreSQL extensions. The largest the extension source distribution service PGXN. It contains approximately a third of all known publicly-available extensions, but even those are not all up-to-date. PGXN aims to be the root registry for all extension releases, and plans to publish all releases to allow downstream registries to automate their build processes, as well. As such, it benefits extension developers and the broader PostgreSQL community when it contains up-to-date releases of all known extensions. I'll show you the process to set up PGXN distribution for your extensions, and the tooling to automate releases to keep it up-to-date. The main things to understand are Git, JSON, and GitHub workflows. At the end of the session, you'l have all the information you need to quickly and automatically publish your extension on PGXN.

Bist du bereit für einen Abend voller Geheimnisse, Täuschung und spannender Diskussionen? Am Mittwoch, den 22. April treffen wir uns zu einem neuen Mafia–Werwolf-Spielabend. Finde heraus, wer im Dorf die Wahrheit sagt – und wer heimlich zur Mafia oder zu den Werwölfen gehört. Ein Blick. Ein Verdacht. Eine Abstimmung. Und plötzlich ist jemand… raus. 📅 Datum: Mittwoch, 22.04 ⏰ Beginn: 18:00 Uhr 📍 Ort: Café Chagall 💰 Spende ab 5 € Egal ob Anfänger oder erfahrener Spieler – alle sind willkommen. Bring gerne Freunde mit und tauche ein in eine Nacht voller Intrigen, Strategie und Spaß. ‼️ Wichtiger Hinweis: Wir spielen die ursprüngliche Version von Werwolf/Mafia

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)

**Rust Berlin on location 🏳️‍🌈** is a new, informal in-person Rust meetup group in Berlin. We are a interactive meetup format interested in mob coding, deep diving and problem solving together. We build toy projects, share experiences, discuss technology and learn new cool stuff. And you are welcome to join! No matter if you are writing Rust production code every day, if you already contribute to Open Source projects or want to start doing so, if you use Rust in hobby projects or if you are just curious what the hype and buzz is all about, you are very welcome! To coordinate and plan activities, please join our **[Rust Berlin on location 🏳️‍🌈](https://rust-berlin.zulipchat.com/join/gap4pdbz7xsquliiz7tgcyuk/)**[ Zulip chat](https://rust-berlin.zulipchat.com/join/gap4pdbz7xsquliiz7tgcyuk/)! **Planned programme** Being an informal meetup, we are open to anything between just meet and talk, explore nerd snipes and rabbit holes, mob code together, plan and build fun projects, tinker with electronics, and presentations with Q&A. With the [introduction](https://berline.rs/2026/04/01/berlin-talks.html) of the new [Rust Berlin Talks](https://berline.rs/about#rust-berlin-talks) meetup series, **[Rust Berlin on location 🏳️‍🌈](https://berline.rs/about#rust-berlin-on-location)** strengthens its focus on social community experience, the exchange of knowledge, ideas and perspectives, and the joy of spontaneity. This time, Florian Gilcher will give a small **workshop on structured and safe usage of *\`unsafe\`***. We will look at some common use-cases and how common hazards can be avoided. Anyone is invited to bring their projects and questions, show something, ask something, or explore a topic together. The best conversations and deepest rabbit holes can emerge out of seemingly nowhere. **Projected upcoming meetups** We schedule regular meetups on Thursday evening every four weeks, using the slot between the Berlin Rust Hack and Learn online meetup (every two weeks), and the Rust Nuremberg online meetup (every four weeks). 11 June 2026 is our fourteenth meeting Our next projected meetings are going to occur on the following dates: * 9 Jul 2026 * 6 Aug 2026 * 3 Sep 2026 * 1 Oct 2026 * 29 Oct 2026 * 26 Nov 2026 **Location** Our meetup location is the new shared office community space of Ferrous Systems, Slint and KDAB in Berlin Mitte, for up to 25 people. We are expecting to use this space as our default location for the time being, with the IN-Berlin e.V. community space in Moabit as backup. Regardless, as our group might eventually outgrow the locations' size limit, we are low-key looking for bigger locations. If you know a fitting location, then please let us know in our Signal group! Another workable way might be to split the meetup into smaller, interest-specific sub-groups instead. As the no-show rate on Meetup.com is rather high, consider showing up even if you are on the waiting list. We can't promise that there is any space left, but usually there is. So give it a shot! **Accessibility** The location has an elevator and a wheelchair accessible bathroom. Please note that the bathroom is two floors down from the meetup space. On our quest for a bigger location, we are going to pay special attention to accessibility. **Community** We aim to create a safe place for everyone and adhere to the [Berlin Code of Conduct](https://berlincodeofconduct.org/). Inclusivity is very important to us. If you are curious about Rust, but unsure if you are welcome to join: Yes, yes you are. Please come to the meetup! If you have special needs, please get in contact, we will try to accommodate you as best we can. We are part of [https://berline.rs/](https://berline.rs/) and like to hang out in the **[Rust Berlin on location 🏳️‍🌈](https://rust-berlin.zulipchat.com/join/gap4pdbz7xsquliiz7tgcyuk/)**[ Zulip chat](https://rust-berlin.zulipchat.com/join/gap4pdbz7xsquliiz7tgcyuk/). You are very welcome to join!

Come chat about Atlassian tools and best practices at the Reynoldsburg Sunny Street Cafe and Breakfast is on Atlassian! Let's get the day started off with breakfast with your ACE Leaders! We're always excited to talk about Atlassian Products, share our knowledge and hand out swag! Come chat with us about new product news and anything you are working on within the Atlassian product stack. This is a great opportunity to come see what we are all about, hear new business news and share with other Atlassian users your questions and experiences. We'd love to see new and old friends come out to chat and learn about Atlassian! Agenda --- Moderators Kimberly Deal - Columbus Atlassian User Group Leader Kevin Stanley - Columbus Atlassian User Group Leader Greg Sprowls - Columbus Atlassian Community Leader Hosted By Kimberly Deal, Atlassian User Group Leader Kevin Stanley, Chief Everything Greg Sprowls, Agility Lead --- Global Partner Atlassian (http://atlassian.com) Millions of users globally rely on Atlassian products every day for improving software development, project management, collaboration, and code quality. Partner Atlassian --- For over a decade, Atlassian customers have come together to network, share ideas, solve problems, and find new ways to use Atlassian products. Today, more than 15,000 people take part in Atlassian community events in more than 30 countries. --- Complete your event RSVP here: https://ace.atlassian.com/events/details/atlassian-columbus-presents-rise-and-shine-with-atlassian-reynoldsburg-5/.

Get ready for a Picnic, this is our social and member appreciation event for the year! Feel free to bring family, but be sure to reach out with the number of attendees, so we can provide food for everyone. There will of course be food, music, games and fun! Event is held rain or shine, we have a covered shelter house reserved for the event. Agenda --- Moderators Kimberly Deal - Columbus Atlassian User Group Leader Kevin Stanley - Columbus Atlassian User Group Leader Greg Sprowls - Columbus Atlassian Community Leader Hosted By Kimberly Deal, Atlassian User Group Leader Kevin Stanley, Chief Everything Greg Sprowls, Agility Lead --- Global Partner Atlassian (http://atlassian.com) Millions of users globally rely on Atlassian products every day for improving software development, project management, collaboration, and code quality. For over a decade, Atlassian customers have come together to network, share ideas, solve problems, and find new ways to use Atlassian products. Today, more than 15,000 people take part in Atlassian community events in more than 30 countries. --- Complete your event RSVP here: https://ace.atlassian.com/events/details/atlassian-columbus-presents-annual-columbus-ace-summer-picnic/.

We are bringing Microsoft Build sessions to Columbus Ohio! The Central Ohio Azure Meetup and Central Ohio .NET Developer's Group (CONDG) are coming together to bring some of the labs and breakouts from Microsoft Build to your backyard. In this free, 1 day event, you are going to Build stuff with us! And yes, there will be free food. So please RSVP for a head count!

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!

We are going to build together with all the CLIs! E will be doing it at Columbus Code and Coffee Agenda --- Hosted By James Power, Organizer Pete Gordon, Organizer Just a Software Guy in the age of the Internet. Complete your event RSVP here: https://gdg.community.dev/events/details/google-gdg-columbus-presents-ai-improv-lets-build-a-game-together-with-claude-code-codex-and-gemini-and-be-the-judge/.

**Presenter:** Matthew Hess, Microsoft MVP **Time:** Pizza at 6:00, Presentation Starts at 6:30pm Eastern **Location:** Theoris, 9000 Keystone Crossing, Either Downstairs or in Suite 230 if main meeting room isn't available, Indianapolis In 2019 (C# 8.0) Microsoft introduced a feature that has generated a lot of confusion, debate and outright dissent. I'm talking about Nullable Reference Types. In this presentation, I we dig into this feature, explore why it exists, what problem it tries to solve, how it works, and how people have critiqued it, so that you as a programmer can decide if and how you want to use it. Looking forward to seeing you there!

Topic to be announced. **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