Big Data

Welcome to the first M-PUG session of the year as we kick off spring in Sweden! Join us for an evening of practical AI and PostgreSQL discussion, community, and good company. We'll be gathering at the ground floor of Minc, and whether you're a longtime member or joining us for the first time, we’re excited to reconnect with the community and start the year with an insightful session. **Title:** Boring is Better: Building RAG with PostgreSQL as a Vector Database **Abstract:** Retrieval-Augmented Generation doesn't need the shiniest vector database. PostgreSQL with pgvector gives you everything you need: fast similarity search, native indexing, and - most importantly - one less system to operate. We'll show how to build production RAG applications using the database you already know and love, without the operation complexity/overhead/hype of dedicated vector stores. See if PostgreSQL is the boring choice that makes sense for your team's AI development workflow. **Speaker:** Ali Jahangiri brings a decade of expertise with electron driven innovation - from atomic scale transistor fabrication, to physical AI solution development at Arduino and high performance computing systems. As a Machine Learning PhD candidate at Lund University and affiliated member of the ELLIIT (Linköping-Lund initiative on IT and mobile communication) centre of excellence, Ali is advancing the sustainable AI frontier by developing smaller, faster and more energy-efficient machine learning architectures. **Agenda** 17:15 - 17:30: Guest arrival 17:30 - 18:15: Presentation 18:15 - 19:30: Pizza and networking

*Talk by Abraham W.* Martin-Löf's meaning explanations provide an approach to understand mathematical statements as statements about functional computer programs. Furthermore, meaning explanations can be used to justify the inference rules of intuitionistic type theory. *As usual, there's mingling at the local bar after the talk.*

## Sandboxed Agents with yoloAI Hello, 世界! For meetup #59 on Tuesday [Apr 28, 2026 19:00 CET](https://www.meetup.com/leipzig-golang/events/312537718/) we are thrilled to welcome back [Karl Stenerud](https://www.linkedin.com/in/kstenerud/), who will be presenting (remote) one of his recent projects: [yoloAI](https://yoloai.dev/): > Run AI coding agents freely in a disposable sandbox. Review exactly what changed. Apply what you want. Some people are aware of the security nightmares that probabilisic language models with full system access may have, but you also need to act on it. > Permission fatigue is a real problem. Sandbox escape is a real problem. yoloAI solves it. The project is written in Go and open source at [kstenerud/yoloai](https://github.com/kstenerud/yoloai), works with various sandbox backends like docker, podman, tart, seabelt - and security modes, using [runc](https://github.com/opencontainers/runc), [gvisor](https://gvisor.dev/), [kata](https://katacontainers.io/), [firecracker](https://firecracker-microvm.github.io/). After looking at a agent memory upgrade system in [#58](https://golangleipzig.space/posts/meetup-58-wrapup/), we continue our exploration of [agentic coding](https://missing.csail.mit.edu/2026/agentic-coding/) and ai assisted software development, which is a rapidly developing field. ### Schedule * 18:45 Doors open * 19:00 Welcome * 19:10 yoloAI (remote presentation) * 20:00 Open discussion We’ll meet: * in person at [Basislager Leipzig](https://basislager.co), at [Peterssteinweg 14, 04107 Leipzig](https://maps.app.goo.gl/1fMkeDSPZ7Aauszh8) ([OSM](https://www.openstreetmap.org/node/3504864558)) * and online via [Google Meet](https://meet.google.com/tgb-juwg-khy) Join us to discuss security, agents, isolation techniques and more.

**👉Do Not Hesitate To Join the Waitlist — We will try to find room for everyone...👈** **This event is a memorial gathering, a wake** to the planned — but now cancelled [DevOpsDays Copenhagen 2026](https://www.devopsdays.dk/events/drink-up-2026/). **The event is free to participate - SEATS ARE LIMITED TO 40!** **Program (start 17:00 SHARP, arrive and be seated before that!)** * **Welcome** + 1 minute of silence for the deceased DevOpsDays * **Lessons from 10 years of Platform Engineering** by Kris Buytaert * **Table discussions** — "What the heck is going on in the DevOps Community right now?" * **Summary** on table discussions * **Outro** — The current status of the transformed Danish DevOpsDays Association and a glimpse into what the future will bring It ends at the "Workbar" no later than **19:00** but if we're still a decent crowd we will continue onward for a burger or a pizza. **Keynote:** [Kris Buytaert](https://www.devopsdays.dk/profiles/kris-buytaert/) is flying in from Belgium to deliver his planned Keynote [Lessons From 10 years of Platform Engineering ](https://www.devopsdays.dk/talks/lessons-from-10-years-of-platform-engineering/) **Post Mortem:** We had to cancel the planned two-day DevOpsDays conference, simply due to lack of interest from audience. This is the canary in coal mine; DevOps(Days) choked. Let's do a post mortem. Platform Engineering is the new DevOps — so we're told. *"No — that's Ops, not DevOps".* Where did all the *"You Build It You Run It"* hype go? We will kick off discussions on this topic at the tables - while you sip your funeral beer. **Phoenix rising:** — The Danish DevOpsDays Association has a new charter, new bylaws, a new purpose. We, the organizers, will lay out our plans for the future and encourage you to join. **Context:** [DevOps is Broken](https://www.devopsdays.dk/stories/devops-is-broken/)

Booked pitch at Holmen. Pitch is booked until 22.30 💰 **Cost:** 10 kr Mobilepay: 9539SH Revolut: [revolut.me/frederwnn](https://revolut.me/frederwnn) Or bring Cash * Event begins at 20:15 * You must sign out no later than 9:00 same day * Spots are non-transferable (you cannot reserve a spot and send someone else in your place) * Members who follow the rules and attend regularly will be given priority **Be at the pitch at 20.15 sharp!** Minimum 14 players by midnight and we play! Otherwise the game is cancelled. We aim for 8v8. The game is naturally for everyone no matter gender, level or anything. We emphasise on having fun! That also means no risky tackles or foul language. Bring a white and a black t-shirt and a ball if you have one. **Last minute sign-off's** (Later than 9AM on the same day) or no-shows will be banned from the next games and be put in the no-show list. 3 Strikes and you're out for a full year - no exceptions

We are a group of people meeting on Tuesdays to socialize around cooking and eating together. Usually around 40-50 people. Many are international students, but also other people join. The foodclub exist independent of Meetup, we invite you because we have room for a few more people. The food is vegan and made from donated leftover veggies from a local greengrocery. The place has originally hosted leftwing activist groups, and many of the people joining are also involved in political groups. If you want to join for chopping and cooking, we will be doing that from 3 to 6 pm. It is possible to join part of the time. From 6:30 to 8pm we are serving food. Donation around 30 kroner. If you are helping out some hours, chopping, cooking or cleaning, you can eat for free. From 8 to 9 - 9:30 pm we are cleaning up the place. We hope to see you in our lovely foodclub <3

**Guests: Registration on email is required before attendance** Guests are most welcome to join our meetings, but attendance must be registered by email to [copenhagen@toastmasters.dk.](http://copenhagen@toastmasters.dk.%2A%2A/) Please come 10 minutes before the meeting start. We start at exactly 18:00. Welcome to ***Copenhagen Toastmasters Club*** Looking to improve your speaking and communication skills? Ignite your career? Gain the confidence to speak up? You’ve come to the right place. **Our meetings for 2026 from April to June:** • Wk 15: 7. april • Wk 17: 21. april • Wk 19: 5. may • Wk 21: 19. may • Wk 23 2. jun. • Wk 25 16. jun. **Our history** The *Copenhagen Toastmasters Club* was established in June 1996 by a group of dedicated people. We are the first Toastmasters club in Denmark. We are part of the Toastmasters International which is a nonprofit organisation that helps people to improve public speaking. **Our goals** *Copenhagen Toastmasters Club* will give you the skills and confidence you need to express yourself effectively in any situation. Toastmasters is the most efficient, enjoyable and affordable way of gaining great communication skills. You'll learn how to: * Formulate and express your ideas effectively * Be more persuasive and confident when giving presentations * Improve your one-on-one dealings with others At *Copenhagen Toastmasters Club*, you'll get to practice your skills by organising and conducting meetings and motivating others to help you. Become a better negotiator. Gain trust. Inspire your team. **Want to know more about *Copenhagen Toastmasters Club*?** [Facebook](https://www.facebook.com/CopenhagenToastmasters) , [LinkedIn](https://www.linkedin.com/company/2480522/admin/dashboard/) [Toastmasters International - global network](https://www.toastmasters.org/)

Viviane and Xavier are visiting from the Unity Montreal office, and they have kindly offered to give a talk about using machine learning inference in Unity games (actually same talk which will also be given internally) **Xavier Désilets** \- Senior Software Developer\, Unity **Viviane Rochon Montplaisir** \- Senior Software Developer\, Unity Are you a game dev who keeps hearing words like "tensors" and "logits" and quietly alt-tabs back to your prefab folder? This session is for you. In the first half, we'll do a fast, practical ML 101 specifically for game developers. We'll cover what tensors actually are (in human language), quantization, how model graphs work, and what to make of different model formats. In the second half, we'll focus on the decisions you have to make to ship something: how to pick a model size that won't set your players' fans on fire, what formats and hardware are supported, and how to think about speed vs. quality. We'll walk through real-world input and output pipelines. We'll ground this with currently available Unity Sentis samples. By the end, you won't be a data scientist, but you will know how to choose, run, and wire up ML models at runtime in Unity without breaking your frame budget or your brain. **Program:** 17:30 - Sandwiches, sodas and mingling 18:00 - Welcome 18:10 - Presentation 19.15 (approx.) - Mingling continues 21:30 - Venue closing

New Host for the Meetup group and new horizon for the community. Join Mia for a drink and a discussion about how we can shape the group activity to give more value to the members and to AI development.

Complete your event RSVP here: [https://gdg.community.dev/events/details/google-gdg-cloud-berlin-presents-cloud-next-26-amp-rooftop-networking-building-agents-with-adk/](https://gdg.community.dev/events/details/google-gdg-cloud-berlin-presents-cloud-next-26-amp-rooftop-networking-building-agents-with-adk/) Hi. We are delighted to invite you to our hybrid (virtual and onsite RSVP available) April gathering at [Ojin AixHaus in Mitte](https://ojin.ai/community). We’ll be unpacking the top highlights from Google Cloud Next '26 its 22-24 of April [(register to get virtual spot)](https://www.googlecloudevents.com/next-vegas/) and sharing expert insights on the Agent Development Kit. **The Agenda** * 6:00 pm: Doors open for snacks, drinks, and a bit of a chinwag * 6:45 pm: Kick-off with the Ojin AixHaus crew * 7:00 pm: Google Cloud Next '26: The highlights! * 8:00 pm: [Iliyan Peychev](https://www.linkedin.com/in/iliyanpeychev/): Evolving Cloud Run Apps into Agents with ADK *Agents are here to stay, and Google’s ADK makes building them from scratch more accessible than ever. But in the real world, we rarely start with a blank slate. What if we have battle-tested Cloud Run applications already using Gemini that we need to evolve? How can we get the benefits of the Agentic world without a full rewrite? This session focuses on moving from manual controllers and service orchestration to Multi-Agent systems with Google’s ADK. We will explore the practical "why" and "how" of this architectural shift, along with the real-world caveats and pitfalls.* * 9:00 pm: 🍕🍻 Rooftop Drinks & Networking (with a view!) * 10:00 pm: Doors close **🙏 Thanks & Credits** A massive thank you to **[Ojin AixHaus Community ](https://ojin.ai/community)**crew for letting us in their brilliant space! **Follow Ojin AixHaus on socials: [Instagram ](https://www.instagram.com/ojin.ai/#)[Lin](https://ojin.ai/community)[kedin ](https://www.linkedin.com/showcase/ojin-aixhaus/)[X](https://x.com/Ojin_AI)** We’d love to see you there! ***

Hello all! To kickstart our Meetup group here I suggest to have a morning meet&greet for those of us available. I would like to invite you to our office in Bredgade, Copenhagen, and spend 20 minutes on our approach to measuring software greenness and introduce a research project we are part of, led by Aalborg University and Roskilde University: [GREENSQL](https://vbn.aau.dk/en/projects/green-digitalization-starts-in-the-database/). If you find this interesting, I will work on having the researchers come by our Meetup and give a status on current progress. That leaves about 40 minutes for discussion and general networking. If we have a lot of attendees (fingers crossed) I may have to change the location - please suggest alternative locations if you have one. All the best, Rasmus

# Tired of dating apps or surface-level events? This is different. This is a **2-hour guided relational experience** designed to help you connect with other singles in your city — without small talk, pressure, or performance. **What happens:** • You join a 2-hour guided online session • You meet a small group of singles from Copenhagen • You’re led through structured connection exercises • Within 48 hours, you meet the same group in person • You stay connected afterward via WhatsApp **This is for you if:** • You’re done with shallow or random social spaces • You want deeper, more intentional connection • You’re open to a structured experience If you’re just browsing or looking for something casual, this likely won’t be a fit. **Important:** Spots are limited and booking happens through our website. 👉 Reserve your spot & stay in the loop with new events every month: [[https://consciousconnections.com/join](https://consciousconnectionsclub.com/join)] **When:** Online session: [8-10 AM] In-person meetup: within 48 hours (details shared after booking) Most people come alone. Most leave having met people they genuinely want to see again.

**Founders Running Club** (FRC) brings founders, investors, tech, creative people and startup enthusiasts together for weekly easy runs and networking. We like to be comfortable when we run and finish with coffee and conversations. Choose your pace or follow a pacer—pets, friends, family, are welcome. 🗓️ Launched in San Francisco, July 16, 2022 🌍 Now in 35+ cities 📅 Running + Networking events + Community **Join the community** [http://foundersrc.com/chats](http://foundersrc.com/chats) **Stay updated**: Instagram [http://instagram.com/foundersrc/](http://instagram.com/foundersrc/) Podcast [http://podcast.foundersrc.com/](http://podcast.foundersrc.com/) LinkedIn [http://linkedin.com/company/foundersrc/](http://linkedin.com/company/foundersrc/) Strava [http://strava.com/clubs/foundersRC](http://strava.com/clubs/foundersRC) Website [http://foundersrc.com/](http://foundersrc.com/)

\#\# 🔐 **Registration** **IMPORTANT:** This event is free, but please register on the UXDX site so we can confirm numbers and manage access to the venue: [https://uxdx.com/community/community-copenhagen-2026-04-29/](https://uxdx.com/community/community-copenhagen-2026-04-29/) Join the **Copenhagen UXDX Community** for an evening exploring how teams can scale products more effectively while rethinking the role of UX in a changing landscape. This is a practical meetup for people across **Product, UX, Design,** and **Dev** who want to learn from real examples, challenge assumptions, and connect with others building digital products today. \*\*\* \#\# 📅 Agenda **16:45 to 17:00** \- Registration and networking **17:00 to 17:15** \- Welcome by UXDX Ambassador Hosted by Tasha Melchior, VP Product at Everway **17:15 to 17:45** \- Scaling Product Methodology from Startup to Scaleup\, Anneli Bartholdy **17:45 to 18:15** \- Networking and snacks **18:15 to 18:45** \- Will AI Kill UX? Tobias Jensen **18:45 to 19:00** \- Closing and networking \*\*\* \#\# ✨ **Talk 1:** Scaling Product Methodology from Startup to Scaleup **Anneli Bartholdy,** Head of Product, UBsend Most companies fail during the scaleup transition. For businesses whose success depends on digital products, the way Product works through discovery, design, development, and launch can make all the difference. In this talk, Anneli will walk through the key components of working with Product as a company grows, highlighting the questions, decisions, and actions that need to evolve at each phase. Drawing on case stories from European businesses, she will share where teams often get stuck, and what helps them scale more successfully. She’ll cover: How product ways of working need to evolve from startup to scaleup What changes across discovery, design, development, and launch The common risks that can derail product growth What successful teams do differently during the transition \*\*\* \#\# ✨ **Talk 2:** Will AI Kill UX? **Tobias Jensen,** UX Design Manager, Visma AI is changing the craft of design at speed, raising big questions about which skills will remain essential and what the future of UX will actually look like. In this talk, Tobias will tackle those questions head-on, using real-life examples from Visma e-conomic, Denmark’s largest accounting platform serving more than 270,000 customers. It is an honest look at what is changing, what still matters, and what designers should be thinking about now. He’ll cover: Which parts of UX are most under pressure from AI What skills and practices will continue to matter How AI is changing the day-to-day reality of design work What teams can take back into their own organisation \*\*\* \#\# About UXDX UXDX helps teams move from project delivery to empowered, autonomous product teams. We host global conferences and free community events that bring together UX, Product, Design, and Engineering to share how real teams build better products, faster together.

The May Ohio North Database Training user group meeting will be held on **May 5th, 2026 at 5:00PM**. This will be a **HYBRID** event and we will be joined in person by **Sam Nasr.** You're welcome to come meet in-person at our meeting location, the offices of Improving at **[6000 Freedom Square Dr,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Unit 110,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Independence, OH 44131](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** [Teams Link ](https://teams.microsoft.com/meet/287759659366576?p=kCaammjECnUCvZzEJv)if anyone needs it after RSVP-ing for in person. If you would like to subscribe to our email list outside of Meetup, we have changed platforms recently and you will need to register [here in Kit ](https://ohio-north-data-training.kit.com/b8f036f615)instead to receive emails. Agenda: **5:00 PM EST**: Online and in-person meeting begins with a social hour. This is an unstructured hour where you can join us to catch up and meet other group members before the session starts. There will be food brought in for in-person attendees. **6:00 PM EST**: Elections, announcements, followed by our feature presentation. See below for presentation details. **7:30 PM EST**: Optionally after the main presentations, the in-person crowd may go out for snacks and drinks at a local establishment. We hope to see you there! Session Abstract ### Data Cleansing using Data Bricks Machine Learning is highly dependent on adequate data. Not only does quantity matter, but more importantly quality. In this session we’ll cover how to build a custom automated process using Data Bricks. This will provide methods for cleaning data in a data lake using functions in Azure. \*Please note, that we will be using Microsoft Teams for the online portion of this meeting. You may want to join a few minutes early to ensure you do not have any issues. If you are attending in person, there are large TVs at the office, and you do not need to bring a laptop or use Teams.

It feels like we just saw each other 🤷. Join members of the local design and UX community for our monthly breakfast. For May we’re stopping in for Rooh’s popup breakfast/cafe concept. You know someone is getting the lobster yuzu croissant, and that’s not even the prettiest thing on the menu!.

**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

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

**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

**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

Join other experienced and aspiring agile coaches and professionals to: * develop and practice your coaching skills in a peer-to-peer environment * share current successes and challenges in your work environment and get support from each other * learn from each other, build better relationships and experiment with new ideas ***NOTE:*** Pre-registration is required for this event. **Please arrive 10 minutes early** to check in at the security desk.