System Administration

I’m putting together a small hike trip weekend in Hoorneboegse heide in Hilversum, the idea is to come with a few people who want to step out of their routine, spend time in nature, and meet others in a relaxed way. This is not a tour or a structured retreat. The idea is simple step out of your comfort and everyday life to reconnect with nature and with each other. We will – explore the beautiful nature – share a few moments together – and keep things easy and natural There will be time together (walks and sunset). Group size will be small (around 2- 4 people), to keep it comfortable and personal. This Meetup is to connect people who are interested in real and human connection If this resonates, feel free to join and I’ll share more details 🙂

Hi all! 🙂 On Wednesdays we welcome you to practice languages! If you want to practice a specific (uncommon) language, please send us a message so we can find some conversation partners for you on our mailing list! We hope to see you in Café Marktzicht! In the last year we had tables for the following languages: * Dutch * English * French * Italian * Spanish * Turkish\* * German\* * Portuguese\* * Danish\* * Norwegian\* * Russian\* * Arabic\* * Chinese\*\* * Japanese\*\* * Indonesian\*\* * * Most likely, but not every week present. \*\* - Rather rare ;-) If your language is not in this list, please let us know! We have a large database of Language Cafe visitors speaking 56 different languages! We might be able to connect you with a person that does speak the language you want to practice. In case you are not in our database yet, please use this form: http://goo.gl/forms/oSCn9Dn8m8

AI is inmiddels overal in softwareontwikkeling te vinden. Van code genereren tot documentatie schrijven, van workflows automatiseren tot agents die zelfstandig acties uitvoeren. Maar hoe houd je grip op tools die niet altijd hetzelfde antwoord geven? En wie is er uiteindelijk verantwoordelijk als AI daadwerkelijk iets gaat doen? Tijdens deze meetup duiken we in de praktische kant van AI in software engineering en test automation. Zoals altijd georganiseerd door deTesters, TestCoders en TechChamps, in ons kantoor in de Werkspoorkathedraal in Utrecht. Deze keer hebben we twee talks die mooi op elkaar aansluiten. Ghislain Gabriëlse laat zien hoe je AI skills kunt testen wanneer klassieke assertions niet meer genoeg zijn. Bert Jan Schrijver neemt ons mee in de bredere vraag wat AI agents betekenen voor software engineering, verantwoordelijkheid en controle. Twee talks, twee invalshoeken, maar allebei heel relevant voor iedereen die serieus bezig is met kwaliteit, test automation en de manier waarop AI ons vak verandert. **The Agent Who Tested Me: Behavioral Testing for AI Skills** Hoe test je tools die elke keer net een ander antwoord kunnen geven? Ghislain laat zien hoe zij AI skills testen met echte Copilot sessies, zonder alles weg te mocken. Want bij LLMs kun je niet simpelweg een assertEquals op de output zetten. Tenzij je van mega flaky tests houdt. In deze talk neemt hij je mee in een framework waarmee AI skills op verschillende niveaus worden gevalideerd. Van deterministische checks en een LLM Judge tot baseline vergelijkingen en variance analysis. Zo wordt niet alleen gekeken of een skill iets teruggeeft, maar ook of het antwoord klopt, waarde toevoegt en betrouwbaar genoeg is. Een praktische sessie over testen, CI en non determinisme voor iedereen die bezig is met AI, test automation of Copilot skills. **Ghislain Gabriëlse** Ghislain Gabriëlse is een ervaren Test Automation Engineer met ruim 11 jaar ervaring in testen en automatisering. Hij richt zich vooral op het ontwikkelen en inrichten van tools en frameworks die de developer experience verbeteren, zodat teams beter en efficiënter kunnen ontwikkelen en testen. **Software engineering in the age of AI agents: who’s in control?** Een AI verwijdert een production database en blijft vervolgens volhouden dat dit niet is gebeurd. Welkom in moderne software engineering. Generatieve AI wordt steeds vaker een echte samenwerkingspartner. Het schrijft code, past systemen aan en voert acties uit. Maar dat betekent niet automatisch dat het ook doet wat wij denken dat het doet. In deze presentatie neemt Bert Jan ons mee in wat er echt verandert. Niet alleen in hoe we code schrijven, maar vooral in hoe we controleren, begeleiden en verantwoordelijkheid nemen. De rol van engineers verschuift steeds meer van zelf bouwen naar richting geven, beoordelen en kritisch blijven kijken naar wat AI oplevert. Aan de hand van persoonlijke verhalen, inzichten uit de industrie, successen en mislukkingen laat Bert Jan zien hoe je verantwoord om kunt gaan met AI tools die zich razendsnel ontwikkelen. Want ook als je AI het werk laat doen, blijf jij verantwoordelijk voor de uitkomst. **Bert Jan Schrijver** Bert Jan Schrijver is CTO bij OpenValue en houdt zich bezig met Java, AI, software architectuur, Continuous Delivery en DevOps. Hij is Java Champion, JavaOne Rock Star speaker, winnaar van een Duke’s Choice Award en bestuurslid bij NLJUG, de Nederlandse Java User Group. Daarnaast deelt hij graag zijn kennis op conferenties, schrijft hij voor het Nederlandse Java Magazine en helpt hij bij Devoxx4Kids om kinderen te leren programmeren. **Doelgroep** Deze meetup is interessant voor testers, QA engineers, developers en iedereen die bezig is met kwaliteit in moderne software teams. Deze avond is **volledig in het Nederlands (Dutch spoken).** **Programma** 17:30 Ontvangst en eten 18:30 The Agent Who Tested Me: Behavioral Testing for AI Skills 19:30 Korte pauze 19:45 Software engineering in the age of AI agents: who’s in control? 20:45 Q&A en discussie 21:00 Afsluiting met een borrel

Hi people! Tonight we'll play boardgames at Café Lombok, a vibrant place in the Vleutenseweg 228 ( https://maps.app.goo.gl/1uKfqXEF1CZA6qX96 ). Feel free to bring your favorite game and enjoy it with us if you want! This meetup is expected to start at 21:00 and it will finish at 23:00 pm. We will give 30 minutes of courtesy for those who can't be there at 21:00. After 21:30 you can either join the game by teaming up with another player or wait until the round is over and we start a new one (depending on the rules of the game). We do this to protect the scored points and the progress we make. Please read our guidelines before joining this Meetup (they're subject to new updates over time): [https://www.meetup.com/utrecht-lgbt](https://www.meetup.com/utrecht-lgbt) 💫 Don’t forget to follow us on Instagram: @utrecht.lgbt 💫 See you soon! ❤️🌈

Welcome to our Volleyball community !! 🏐🎉 We are a community of volleyball enthusiasts who want to enjoy the game, improve their skills, and meet new friends. Our open play sessions offer a friendly, social environment where everyone can get some practice and have fun. Our sessions consist of mixed level play, however intermediate volleyball knowledge is mandatory. We try to have a balanced levels per team to ensure smooth play. If you aren’t familiar with basic volleyball rules and have no experience, sorry to say, but it's not your group. ❗❗ Meetup recently pops up their subscription option after you click on RSVP— you can dismiss it by clicking the "X" in the top left corner. ✅ RSVP & Attendance Attendance is limited to 14 people. If the RSVP list is full, join the waiting list—cancellations happen frequently. If the event appears full on the Meetup app, try using a web browser instead. ❌Cancellations & Refunds cancellation prior to 24h before the event, can be refunded. Can’t make it? Update your RSVP to "Not Going" ASAP so someone else can take your spot. 👟 What to Bring For your own safety and comfort, wear sport shoes and clothing (no street shoes—must change into sport shoes) and bring deodorant for ours. 💸 Payment & Contribution (€6.00 per person) Payment must be made in advance via Tikkie. Please only pay once you are added to the going list. In case you do not meet the payment deadline, you may be moved to the not going list. Looking forward to seeing you on the court! 🏐🔥 Let’s play, have fun, and make new friends!

Welcome to our Volleyball community !! 🏐🎉 We are a community of volleyball enthusiasts who want to enjoy the game, improve their skills, and meet new friends. Our open play sessions offer a friendly, social environment where everyone can get some practice and have fun. Our sessions consist of mixed level play, however intermediate volleyball knowledge is mandatory. We try to have a balanced levels per team to ensure smooth play. If you aren’t familiar with basic volleyball rules and have no experience, sorry to say, but it's not your group. ❗❗ Meetup recently pops up their subscription option after you click on RSVP— you can dismiss it by clicking the "X" in the top left corner. ✅ RSVP & Attendance Attendance is limited to 14 people. If the RSVP list is full, join the waiting list—cancellations happen frequently. If the event appears full on the Meetup app, try using a web browser instead. ❌Cancellations & Refunds cancellation prior to 24h before the event, can be refunded. Can’t make it? Update your RSVP to "Not Going" ASAP so someone else can take your spot. 👟 What to Bring For your own safety and comfort, wear sport shoes and clothing (no street shoes—must change into sport shoes) and bring deodorant for ours. 💸 Payment & Contribution (€6.00 per person) Payment must be made in advance via Tikkie (payment link will be send to you). Looking forward to seeing you on the court! 🏐🔥 Let’s play, have fun, and make new friends!

> The location is Landhuis in de Stad, Utrecht Want to expand on a game design idea? Talk about a game feature that isn't just ready yet? Are you looking for playtesters or do you want to brainstorm on a new board game design with others and get their feedback? Find out what goes into making board games or just meet like-minded board game enthusiasts? Then the Amsterdam Board Game Design session is for you! Join us on [Discord](https://discord.gg/eDfmkyCyVX) for more information about what we do and upcoming events!

I'm excited to host the 24st edition of *Strangers to Friends*! Every event so far has been warm, fun and full of great connections. So we’re doing it again! Curious about our previous events? Check out our photo albums (only visible on the laptop version of Meetup). **What to expect** * A safe, relaxed environment to meet both locals and expats, whether you want to meet new people, experience an international atmosphere or talk about business, it’s all possible. * Start the evening with a few rounds of conversation cards: pair up with someone you don’t know, answer meaningful questions and rotate every 10 minutes. Within just one hour, you’ll get to know several people really well and enjoy meaningful conversations. * Everyone comes on their own, so it’s easy to connect. **Practical details** * Doors open at 20:00, after 30 minutes we start with conversation cards * Venue: Boekencafé Libertas, Klarendalseweg 477-1, Arnhem * 20 min walk from Arnhem Central * 7 min walk from Arnhem Velperpoort * You’ll receive 1 drink token for (beer/wine/soft drinks) and snacks all night! * Find us on the right side of the café at the bar, by the window and garden Bring a smile and join us for an evening where friendships grow, business ideas spark and real-life connections happen. Back to basics, away from screens, meeting face-to-face. Warm regards, Julia

[Code & Comedy 2026](https://codeandcomedy.nl/) **Get ready to dive into the world of Code & Comedy 2026!** The conference for and by developers where code and humour come together. Returning for its 7th edition, Code & Comedy is set to unite 250 developers for an evening of coding, laughter, and inspiration. Enjoy inspiring talks and workshops and connect with your fellow developers. This year’s theme is “Trust Me, I’m an Agent,” exploring the rapidly evolving world of AI agents, automation, and modern software development. Join us for an engaging evening where we dive into how autonomous systems are changing the way we build, test, and run software. The event kicks off with a keynote session by Jeroen van der Most, followed by engaging breakout sessions covering a variety of topics across software development. To cap off the night, comedian Kim Schuddeboom will provide the evening with a laugh. **Schedule** **17:00 – 18:20** Welcome & Dinner **18:30 – 18:35** Opening **18:35 – 19:20** Keynote - Beyond the Boundaries of AI by Jeroen van der Most **19:45 – 20:15** Breakout sessions 1: * Be Precise or Be Surprised: Spec-Driven Development with GitHub Spec Kit by Roelant Dieben * SQL 2025 vector searching with a local Ollama hosting the mxbai-embed-large LLM by Theo Ekelmans * Agentic-AI: Building an AI oriented Kubernetes platform using AI agents by Sander Mathijssen * The AI realist by Bjorn Schijff * Be Aware of the Context You Provide by Gijsbert Nutma **19:45 – 20:15** Breakout sessions 2: * Close the gap between AI and Robotics with Java 25 by Ricky van Rijn * Choosing the Right LLM, Automatically by Stuart van der Lee * Building Flexible AI Avatars for Immersive Training by Arco Nederveen & Saskia Groenewegen * Build an AI Agent That Actually Does Your Work: MCP + LangGraph by Peter Eijgermans * Build an agent into any app with the GitHub Copilot SDK by Bart Wullems **21:10 – 21:45** Comedy by Kim Schuddeboom **21:50 – 23:00** Drinks Register @ https://codeandcomedy.nl/

Join us for a relaxed and friendly matcha tasting meetup. I’ll bring matcha for everyone to try, and you’re welcome to bring your own snacks and drinks, including alcohol if you like. This is a casual event for meeting new people, enjoying Japanese tea culture, and spending a cozy afternoon together. Beginners are very welcome. Free to join.

Join the Dutch Outdoor and Hiking Group for a day hike and enjoy Beautiful shell path along the Lower Rhine and visiting De blauwe Kamer and hiking on the Grebbeberg * We **start at 11:00** from the train station in Rhenen https://maps.app.goo.gl/CrbeFtQPutUSYWFp7 * Length: \~18 km (4 - 5 hr hiking) * What to bring: lunch, water, snack. * For whom: As always, sporty folks that like to combine social event with being active in nature. **Getting there by Train:** * To train station in Rhenen. https://maps.app.goo.gl/CrbeFtQPutUSYWFp7 **Getting there by Car:** * Free Parking: Stationsplein, 3911 AP Rhenen https://maps.app.goo.gl/qVrH9pA5JK2prQPg9 **Note:** * Please **pay a small fee (3 euro)** to help us cover the (increased) yearly Meetup contribution of 240 euro. We'll ask you to pay before the start of the hike (can be on the day itself). No refunds, but in the unlikely event that hike would be cancelled and you already paid, you don't need to pay for your next hike. Thank you so much! Use the **safe link** here: https://www.ing.nl/payreq/m/?trxid=WrVKENccZiV4tdRSPrVbFG4WVyikUVQn * Keep in mind that the hike can be canceled when the weather is very bad (**always check the event before you go**). * If you RSVP 'yes' we expect you to show-up. Please do not cancel less than 24 hours before the hike. **No-shows** will lead to your removal from the group. Thanks for the understanding. * By signing up for this event, you agree to release the organizers from any responsibility and liability in all claims. As the participation is strictly voluntary and you freely choose to join, it is the responsibility of individuals participating to ensure that they are fit enough and have adequate coverage to protect themselves.

*Please note: this meetup will be held in English.* In this first meet up, you will be shown a set of immersive artistic and design research experiments. Project Thuis conducts two years of artistic and design research into immersive experiences that place the body at the centre. The central question is: "How can immersive experiences in (semi-)public spaces contribute to a sense of connection, belonging, and 'feeling at home'? To explore this, a multidisciplinary consortium consisting of [Fillip Studios,](https://www.fillipstudios.com/) [affect lab,](https://www.affectlab.org/) [Introdans,](https://introdans.nl/) [Utrecht University,](https://www.uu.nl/staff/SPonzanesi) and the [Amsterdam University of Applied Sciences,](https://civicinteractiondesign.com/) has embarked on a creative journey together. Within the context of Project Thuis, this meetup will focus on artistic and design research forms applicable across various disciplines. **Programme:** 16:00 - 16:15: Opening 16:15 - 17:15: Interactive session 17:15 - 17:30: The role of the maker in the future of immersive experiences 17:30 - 18:00: Networking and drinks (including presence of [CIIIC](https://us2.mailchimp.com/mctx/clicks?url=https%3A%2F%2Fwww.ciiic.nl%2F&xid=f4ced03a90&uid=2313462&iid=e62065ab18&pool=cts&v=2&c=1780312609&h=0b99fb0b79b5fe3d2625a4891bea9d8bc6ef045db3b8ee6ffe56d6cfc6e501c4)) Within the context of Project Thuis, this meetup will focus on experiments that you, as a maker, can use to conduct artistic and design research across various disciplines. *[This event marks the first in a series for Project Thuis (Home). Ontwerp Platform Arnhem has been invited to organise the meetups. We strongly endorse the importance of initiatives like this, and are highly committed to connecting designers with these themes and consortia](https://www.ciiic.nl/)***[.](https://www.ciiic.nl/)**

Bakery Walk: A Sunday Girls Stroll Let’s romanticize our Sundays in Amsterdam. ☕🥐 We’ll meet and start with a relaxed city walk for coffee & pastries. Between stops, we’ll: ✨ Mix & match conversation buddies ✨ Use fun conversation cards (no awkward small talk) ✨ Get our steps in (pastries taste better after walking 😉) Perfect for new expats and women looking to build genuine friendships in Amsterdam. Come solo. Leave with new connections Please note: everyone buys their own pastries & drinks at the bakeries. That way you can pick what you like best! **Join our WhatsApp group💕** https://chat.whatsapp.com/JFgvbHvRLoP5P9K3GtwGlU?mode=gi_t

Who says games are just for kids? Remember playing games when you're a kid with no need for a manual and no responsibiliies? That's what we're doing. Tag, Cops and Robbers, Ninja... Stir up the memories of what made you happy and bring that pure joy out. Sign up through this [1 question form.](https://forms.gle/XWHNG63iyzuumEon8) To make our inner child completely satisfied, we'll reward ourselves with a hangout and pancakes at Teahouse Rhijnauwen after! 💵 Price : Free 👝What to bring: water, sunscreen, comfortable shoes, an open mindset

BMS-CONNECTED Westerville Mastermind & AmSpirit Towne Centre FIFA World Cup Social from 2pm to 7pm at Jimmy V's in Westerville. Please feel free to stop by for a drink, some food, networking and the US vs Australia FIFA World Cup Group D match. FREE to attend, drinks and food available for purchase. Bring business cards and a friend. 1 S State Street in Westerville.

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/.

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. Please RSVP via [Microsoft Build //localhost:columbus | Microsoft Reactor](https://developer.microsoft.com/en-us/reactor/events/27247/).

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

## 🤝 Host Information A co-hosted event by ProductTank Columbus & Women in Product Columbus 💡 About the Workshop AI adoption is stalling across organizations — not because of a lack of motivation or tools, but because it's fundamentally a behavior design challenge. This hands-on workshop applies proven Behavior Design models and methods to help you move from a vague organizational wish to boost AI adoption to 3-5 concrete, testable interventions you can act on starting tomorrow. Whether you're a product manager, on a product team, or just someone trying to get AI to actually stick at work, you'll leave with a clear picture of what's worth focusing on, what to ignore, and how to drive real, sustained adoption — no guesswork required. 🛠️ What to Bring Laptop: Fully charged and ready to go. AI Assistant: Have your favorite AI assistant pulled up. (Dom will be using Claude, but feel free to use whichever assistant you prefer!) 🍕 Logistics & Perks Food & Drink: Pizza and drinks provided! Parking: Plenty of free spaces available on-site. ###

**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 Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. 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

**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 You will need to scan your ID at the door to get a visitor badge. **Abstract** *Customize the IDE: Building Extensions for Visual Studio Code* Visual Studio Code is one of the most widely used development environments today, and much of its flexibility comes from its extension ecosystem. Extensions allow developers to customize the editor with new features, integrations, and workflow improvements tailored to their needs. In this session, we’ll cover what extensions are and the different types available, including full extensions written in TypeScript or JavaScript, along with lighter-weight extensions such as color themes, language packs, language support, code snippets, and keymaps. We’ll also look at practical reasons a developer might create an extension, from automating repetitive tasks to adding custom tooling. The session includes a hands-on walkthrough of creating a new extension, testing it locally, and understanding the basic project structure. We’ll close with a brief overview of how extensions are packaged and published to the Visual Studio Marketplace and other distribution options. **YouTube Link** TBD