Matchmaking Service

Tijdens de maakavonden van Meet Je Stad soldeer je je eigen meetkastje dat temperatuur, luchtvochtigheid en fijnstof\* kan meten. Het solderen is geschikt voor iedereen: van beginner tot expert! Daarnaast bieden we begeleiding, dus hoef je niet bang te zijn dat je er niet uit komt. Ter deelname betaal je €15 voor de materialen. Vaak lukt het niet om al het soldeerwerk binnen één avond af te krijgen, maar dit is geen probleem; tijdens onze volgende maakavonden kun je langskomen om je werk af te maken. Inmiddels zijn er in de stad Utrecht nu zo’n 150 mensen die hun eigen meetkastje hebben gesoldeerd. Als je kastje af is wordt hij geregistreerd en kun je hem bij jou thuis ophangen/neerzetten. Hierbij krijg je instructies zodat je de juiste locatie kunt kiezen en je metingen zo betrouwbaar mogelijk zijn. Als het dan eenmaal hangt kun je via de kaart op de [website van Meet Je Stad](https://meetjestad.net/index3.php?loc=Tb) bijhouden welke metingen je kastje neemt: zo kun je bijvoorbeeld zien op welke momenten het bij jou het warmst is en vergelijkingen maken met waardes van andere meetkastjes. Dat kan door middel van [deze tool](https://mjs-datavisualisation-fez7kynngq-ez.a.run.app/) die je helpt om grafieken te maken. Dan kan je er achter komen hoe jouw omgeving ervoor staat in vergelijking met de rest van de stad. Meet Je Stad organiseert ook kennisavonden met gastsprekers die vertellen over hitte, fijnstof en andere burgerinitiatieven in de stad. Dit zijn ook gelijk geschikte momenten voor deelnemers om met elkaar in discussie te gaan over hun metingen en ondervindingen. Zo hopen we een netwerk van betrokken inwoners te creëren en meer te weten te komen over de milieuomstandigheden in de stad! *\*De fijnstofsensor is optioneel en kost 20 euro extra. Indien je deze bij je meetkastje wilt moet je deze via een draad met een stroombron binnen 15 meter kunnen verbinden.* **Organisatie:** Milieucentrum Utrecht (MCU) in samenwerking met de Makerscommunity HaHaHo. **Locatie:** Bibliotheek Neude, Huis van Actief Burgerschap (begane grond) **Kosten:** 15 euro voor materiaalkosten, 20 euro extra voor fijnstofsensor. *Bij te weinig aanmeldingen kan de workshop afgelast worden.*

If you are living in The Netherlands, by now, you may well have noticed the amount of open water. If you enjoy cycling in the city, you may wish to feel safer as you navigate the bridges and canals. And you may also want to get ready for visiting the beach, pools or the many lakes this summer. Learning how to swim takes approx 1 year and it all starts with the very first lesson. New comers enroll via our website and pay € 30,50, this is the first lesson and a goody bag. After the class you agree with the personal swim coach how to continue to obtain your final objectives. Enrolling is only possible via [www.your-personal-swim-coach.nl ](https://www.your-personal-swim-coach.nl/)hence a rvsp via meetup is not enough.

Samen sporten, gewoon voor de fun, elke week een divers programma, met allerlei verschillende sporten. Je hoeft niet de beste te zijn, maar wel zin hebben om samen te spelen en te leren. Tijdens een training doen we verschillende spelletjes, basketbal, voetbal. volleybal, spikebal, honkbal. Kom je ook, de bal ligt bij jou!! Eerste keer meedoen is altijd gratis, daarna kan je beslissen of dit voor jou is, of niet!! Dus kom een keer proberen. Kan je niet op deze dag, we sporten ook op andere dagen nl Zondag om 9:30 of Maandag om 20:30 Stuur mij een berichtje als je op die dagen een keer wil proberen! The amount of people rsvp'd to this game doesn't match the real number of people at the event, as Meetup is only used for promotion purposes.

New Year, New Sport! ​Whether you've never played volleyball before or it’s been many years since you last hit the court, you are very welcome to join our Beginner Group! ​We train every Monday at 9 PM at Gymnasium Bibian Mentel in Zeeburgereiland. ​Come learn the basics, get moving, and meet new people in a fun, relaxed environment. ​Get more info here: ​WhatsApp Group: https://chat.whatsapp.com/EnPEK1bHLiTGdpqz6Vtbm4 ​Instagram: @brazucavolley

Every Monday evening from 19.00-19.45 hrs both at our center in Amsterdam and online. Start your week with calm and clarity. Join us every Monday evening for a 45-minute guided meditation in Amsterdam-Oost or online. No registration is needed—just walk in, relax, and let go. Starting the week with a moment of stillness and contemplation can transform your mindset. Meditation can help reduce stress, increase focus, and cultivate a deep sense of peace. Practicing in a group enhances the experience, connecting you with a community and amplifying the collective calm. Whether you’re new to meditation or experienced, this is your time to reset, recharge, and set the tone for the week ahead. Zoomlink on the website - www.maitreya.nl

Onze meetups zijn speciaal voor testers die verder willen kijken dan alleen scripts schrijven. De talks zijn door testers, voor testers. Interactief, laagdrempelig en gezellig. We doen niet aan basisintro's of verkooppraatjes maar gaan voor scherpe inhoud (én lekker eten en drinken :-)). *[let op: aanmelden op deze pagina https://heeyoo.nl/blog/qa-meetup-utrecht-25-feb/ of email thomas.wattel@heeyoo.nl]* Deze avond wederom twee uiteenlopende talks op de agenda, hieronder beide talks iets verder uitgewerkt: Talk 1: **Van functioneel naar performance testen binnen je team** Performanceproblemen komen vaak pas laat aan het licht. In de testfase, of nog vervelender: in productie. Terwijl je als tester al veel eerder signalen kunt oppikken. In deze talk laat Nico zien hoe je de stap maakt van puur functioneel testen naar performance testen. We kijken naar hoe je bestaande geautomatiseerde testen kunt inzetten om performance inzichtelijk te maken. Wat kun je realistisch automatiseren? Waar ligt de grens? En hoe zorg je dat performance echt onderdeel wordt van het werk van het ontwikkelteam zelf? Praktisch, herkenbaar en gericht op ownership. Concrete handvatten om performance structureel mee te nemen in je dagelijkse testwerk. Talk 2: **Testautomation in een microservice architectuur: uitdagingen en oplossingen** Microservices beloven snelheid en flexibiliteit, maar maken testautomation er niet per se eenvoudiger op. Waar test je precies? Op welk niveau? En hoe voorkom je dat je test suite net zo complex wordt als je landschap? In deze talk duikt Erik in het toepassen van testautomation binnen een microservice architectuur. Wat zijn de meest voorkomende uitdagingen zoals afhankelijkheden tussen services, testdata en het behouden van vertrouwen in je tests. Geen ideale wereld, maar een talk met oplossingen en praktijkvoorbeelden. Vragen waar we mee aan de slag gaan: Wat gaat vaak mis? Welke keuzes helpen juist? En hoe zorg je dat je teststrategie meegroeit met je architectuur in plaats van erachteraan loopt? **Tijdstip:** Inloop vanaf 17:00u, start om 18:00u en we ronden af om 21:00u **Locatie:** Newtonlaan 201. Er is ruim voldoende parkeergelegenheid in de garage vanaf 16:00u. **Aanmelden:** Meld je aan op deze pagina https://heeyoo.nl/blog/qa-meetup-utrecht-25-feb/ of email thomas.wattel@heeyoo.nl

We are excited to announce our next Utrecht JUG meetup, featuring talks by Michel Schudel and Ana-Maria Mihalceanu. In the first session, we’ll dive into the art of building **maintainable Spring Boot applications** using the principles of Clean Architecture. You’ll learn how to structure your code so that your domain logic stays clean, testable, and protected from framework and infrastructure concerns — with practical examples you can apply right away. After the break, we’ll shift focus to **JVM performance**. We’ll explore how recent and upcoming Java versions (Java 25 and 26) help tackle slow startup times and long time-to-peak performance, especially in microservices and Kubernetes environments. You’ll gain actionable insights to make your Java services faster, more predictable, and production-ready. Join us for an evening full of practical knowledge, real-world lessons, and great conversations with fellow Java developers! The meetup will be hosted by **Sopra Steria**, Ringwade 1, Nieuwegein Please join us and RSVP! Because of the limited number of seats, please keep your RSVP up-to-date, so we can welcome someone else of you can't make it. Timeschedule: 17:30 Doors open 18:00 Food & Drinks 19:00 Building maintainable Spring Boot apps with Clean Architecture by Michel Schudel 20:00 Break 20:15 Towards Better JVM Performance by Ana-Maria Mihalceanu 21:15 Drinks **Giveaway** 1 JetBrains licence **Talks** **Building maintainable Spring Boot apps with Clean Architecture** Clean Architecture is about separating concerns within your application to keep it maintainable, scalable, and testable. Some call it onion architecture, others call it hexagonal, but in the end they all aim for the same goal: protecting your domain logic from the messy outside world. But how does this work in practice? In this session, we'll build a Spring Boot application together using the principles of Clean Architecture. We'll use the Spring Boot Test framework for clean integration tests and ArchUnit to ensure our squeaky-clean application stays that way by enforcing architectural boundaries. After this session you've learned what Clean Architecture is, and how you can leverage your own applications with it. **Towards Better JVM Performance** Many Java services struggle with slow startup and long time-to-peak performance, painful aspects for microservices and Kubernetes workloads that demand fast scale-up and tight service level objectives. Join this session to learn how to use new optimizations in Java 25 and 26 to accelerate startup and time to peak performance, including Ahead-of-Time object caching with any GC. You’ll leave with actionable steps to make your Java applications start faster, reach peak performance sooner, and stay predictable in production. **Speakers** **Michel Schudel** Michel Schudel has been a passionate Java developer since 1998. Since then, he has seen the good, the bad, and the ugly in Java land. He loves to share his adventures in Java land so others can learn from his experience (and, more importantly, his mistakes!). **Ana-Maria Mihalceanu** Ana is a Java Champion Alumni, Senior Developer Advocate for the Java Platform Group at Oracle, with an extensive background in Java and cloud development, while contributing to Java community growth and events. Her exposure to varied technical challenges involving Java-based frameworks has endowed her with deep insights into the evolution of the JDK tools, practical use, and advanced features.

Hi✋ At[ Data Tribes ](https://www.datatribes.nl/)we organise Meetups because we truly care about sharing knowledge both inside and outside the organisation. We believe that it is beneficial to us and to the market as a whole to connect, create, learn and grow together! **The agenda** // Doors open 6.00pm // Drinks and Pizza’s 6.30pm // Start presentations 7.00pm **Henk van der Valk:** "Optimizing the Azure cloud?" ***Who really cares about Cost & Co2?*** // Start networking 9.00pm // End Meetup 9.30pm Greetings, Data Tribes Inc.

Hello filmmakers, we welcome you to our next in-person networking Meetup! On Sunday March 1, we will meet again in the city center of Utrecht. We will meet in Lebowski (a cozy bar in the shadow of the Dom Tower), without a designated area, so this Meetup will be a quite informal, unstructured event, aimed at one-on-one networking, and getting to know other (aspiring) filmmakers. This meetup provides filmmakers (writers, directors, actors, composers, cinematographers, editors, everyone..) with the opportunity to meet and network with one another, share ideas, and potentially collaborate on present or future projects, all in a relaxed and informal setting. So if you have any specific project in mind that you would like to start up and are looking for people to collaborate with, or if you want to participate in upcoming projects initiated by others, don't hesitate and join this Meetup! If you want to exchange ideas before the Meetup, please do so on our Discord channel. The invite link can be found on our web page: www.openfilmmakingnetwork.nl Filmmakers with an idea are warmly invited to share it with us during the Meetup, in the form of a well-prepared tagline and/or pitch. So bring your ideas, skills and creative self to this meeting & see you then! This is a free Meetup. Please note there is no group account for our table—drinks and food should be ordered and paid for individually at the bar. Keep an eye on this page, as we sometimes move next door to Bar Walden, in which case we'll announce it here. btw: maybe needless to say, but you can walk in (and out) any time from 2 to 5. PS: Please update your RSVP so we'll know who to expect.

**ArnhemJUG** We are excited to announce the second meetup of 2026. OpenValue Arnhem is once again hosting us for the February meetup! **Agenda** * 17:00 CET walk-in * 17:30 – 18:30 Food and drinks * 18:30 – 19:30 talk: **Catching the 137-Killer: A Java Memory Forensics Investigation** by **Martijn Dashorst** * 19:30 – 19:45 break * 19:45 – 20:45 talk: **Building AI Agent Platforms: Architecture, Communication, and Standards** by **Pascal Wilbrink** * 20:45 – 21:30 drinks **Catching the 137-Killer: A Java Memory Forensics Investigation** Your Java application is running smoothly, blissfully unaware of the danger lurking just around the corner. Then—without warning—it vanishes without a trace. Upon investigation, you discover the virtual remains of countless slain JVMs, each marked with the same cryptic number: 137. A serial killer is on the loose in your cluster. This true crime investigation will walk you through the differences between JVM memory areas, the mechanics of container OOMKills, analysing Grafana dashboards for memory and thread anomalies, interpreting heap dumps, and utilising JVM Native Memory Tracking (NMT) to uncover hidden native memory consumption. You’ll master practical forensic techniques and proven prevention strategies—from memory tuning tactics and balancing heap vs. non-heap allocations to leveraging large language models (LLMs) for advanced forensic analysis. These skills will help ensure your applications stay alive—even when something’s out to get them. Just like in a real murder mystery, we may not know whodunnit... but with Martijn Dashorst leading the investigation, you're sure to get closer to the truth. **About Martijn Dashorst** My Java experience is finally old enough to drive, vote and drink a beer (not all at once). One of the remaining Eclipse users, loves Java, relationship with Maven is complicated. Martijn Dashorst has worked since 2004 at Topicus and has used Java since 2002. Loves server-side Java. You might know him from Apache Wicket—he's dabbled somewhat in that framework. Loves his family and cats, finds Douglas Adams' description of the Sirius Cybernetics Corporation's technology very apt to the current technology landscape. **Building AI Agent Platforms: Architecture, Communication, and Standards** AI systems evolve from standalone models into connected, agent-based ecosystems, new architectural patterns, protocols, and standards are emerging. Concepts such as AGUI, A2A, A2UI, and MCP-based applications are changing how intelligent systems are designed and integrated. This presentation explains how these approaches affect system structure, responsibilities, and interoperability. Using architectural diagrams, it shows how AI agent applications communicate and collaborate through standardized interfaces, and provides guidance on building scalable and maintainable AI platforms. **About Pascal Wilbrink** Pascal is a senior software engineer at OpenValue with over a decade of experience and a strong interest in applied AI and intelligent automation. He enjoys exploring how technology can make developers’ lives easier and software more resilient. When he’s not experimenting with new ideas or building open-source tools, Pascal likes to learn by doing and turning complex problems into practical solutions.

** ABOUT OUR WATERCOLOR PAINTING PARTY / AMERSFOORT** Amersfoort - Utrecht Province / Center of the City / Easy access from train station. Create your very own **portrait, animals, landscape, or figurative** masterpiece in only **2.5 HOURS using watercolor and our secret mixed media techniques!.** This session is not about perfection; it is about capturing emotions and personal expression. **No experience required** **\- trust us\!** our professional artist will guide you step-by-step through this unique self-portrait journey. You can look forward to a fun and exciting evening with other participants, **so it doesn't matter if you want to come with friends or alone - you are very welcome!** This is the perfect after-work or weekend activity where you'll unleash your creativity while creating something deeply personal. You will create a portrait combining painting, drawing, and creative techniques to bring your unique vision to life. When finished, you'll take home your newly created self-portrait artwork to cherish or share with loved ones. Each participant will have pencils, colored pencils, watercolor, acrylic/gouache paints, and a surface. You'll work from an image we will bring. **️ READY TO HAVE FUN?** Get your Ticket and book your seat **✨[HERE](https://buymeacoffee.com/artloversclub/e/430555) ✨** **Questions?** Speak with a member of the team in **[WHATSAPP HERE](https://chat.whatsapp.com/J3Y5yeWUhvbJM98bqty2WP) ** .................................... ** WHAT'S INCLUDED?** All supplies included **2.5-HOUR [TICKET SESSION](https://buymeacoffee.com/artloversclub/e/430555)** ️ **EXTRA BONUS:** **FREE TICKET**️ to participate in our Drawing and Painting Cafes in Amersfoort or Our Online Still-Life sessions if you live far away. New friendships and Conversations Freedom to work at your own pace **English tutored activity** (And of course, you can speak in your local language with your friends!) ⭐ No experience needed **️ BOOK YOUR SEAT IN ADVANCE ✨[HERE](https://buymeacoffee.com/artloversclub/e/430555) ✨!** **Questions?** Speak with a member of the team in **[WHATSAPP](https://chat.whatsapp.com/J3Y5yeWUhvbJM98bqty2WP) ** ** 2026 CALENDAR OF UPCOMING EVENTS:** First Sunday or every month from 11.00 AM - 1:30 PM. .................................... **️ ART LOVERS CLUB / ABOUT US** **ART LOVERS CLUB** is a community where art enthusiasts come together to explore their creativity and connect with new buddies through various events and sessions ( In-Person and Online) . Whether you're a seasoned artist or just starting, we have something for everyone!⭐ To share with you more about what we do, you can see here the overall atmosphere of our events in Amersfoort and also follow us if you want⭐: **[https://www.instagram.com/art_lovers_social_club](https://www.instagram.com/art_lovers_social_club)** **Questions?** Speak with a member of the team in **[WHATSAPP](https://chat.whatsapp.com/J3Y5yeWUhvbJM98bqty2WP) ** ** 2025 CALENDAR OF UPCOMING EVENTS:** First Sunday or every month from 11.00 AM - 1:30 PM. **See you soon. We are looking forward to painting and having Fun Together! ‍‍‍‍**

Join us as we get together to get together to help those in need at this CMG Gives Back event! For this event, we’ll help prepare food, serve meals, assist residents, wash dishes and clean surfaces at Fath Mission – Grant Kitchen. We have a great little community of Movie Group friends so rather than see a movie this time, we’ll help “Create a better world” by helping serve those in need. Here are complete details and our plan for this event: FAITH MISSION – GRANT KITCHEN: The Faith Mission kitchen and dining room serves residents 3 meals a day, every day of the year. Our group will help prepare food, serve meals, assist residents in the dining room, wash dishes, and clean surfaces. PLAN: We will be preparing / serving / cleaning for BRUNCH from 10:30am to 12:30pm and have space for a total of 7 volunteers. Please arrive at 10:15am and wear closed-toe shoes and long pants. LOCATION: Faith Mission – Grant Kitchen is located at 245 N. Grant Ave. Enter the kitchen at Dock 1, indicated in the attached map. On-site and street parking are available in the surrounding area. Below are some links / attachments with additional info/details: \* LSS Volunteer Guidelines: Uploaded to photos. \* Parking Map Info: Uploaded to photos. \* LSS Faith Mission Orientation Video: https://www.youtube.com/watch?v=Bp46_6ay6iA \* Link with Additional Details / Info: https://lss.vomo.org/opportunity/faith-mission-grant-kitchen-2025 IMPORTANT REMINDER: Our group will be providing the all of the volunteers on this day so a firm RSVP count is essential. Please only sign up if you are certain you’ll be able to attend. If something unavoidable comes up, please update your RSVP no later than one week prior to the event. With very few exceptions, no shows or cancelations within 1 week of the event will not be eligible for future CMG Gives Back events. I appreciate your understanding as we try to ensure the agencies have the volunteers needed to provide the essential services they provide to the vulnerable population they serve. THANK YOU: This CMG Gives Back event provides an opportunity for YOU to get involved in helping others! Benefits go well beyond the help we give to others. Volunteering provides a wide range of personal benefits, including positive effects on mental and physical health, reduced stress/depression/anxiety, increased happiness and improved purpose, life-satisfaction and personal well-being! Plus, the opportunity to get involved, connect with others and help those in need. PARTNER AGENCY: This event is hosted by Lutheran Social Services (LSS), which serves thousands of people in need each day in 27 Ohio counties by addressing the four core societal issues of food, shelter, safety and healing. LSS offers food through the LSS Food Pantries, housing and supportive services through LSS Faith Mission and LSS Faith Mission of Fairfield County homeless shelters, domestic violence services through LSS CHOICES for Victims of Domestic Violence, senior living and health care, affordable housing communities, and other services that uplift families and strengthen communities. Look forward to seeing you there, Dan

Connected Westerville Night of Networking flips the script on networking, with surprises and connections that'll make you say, "Who knew networking could be this much fun?!"

Bring your business cards and network in person with other business professionals! Gold Star Referral Clubs is one of the most established professional networking organizations in the country, with multiple groups in central Ohio. Join us!

WQC has weekly Thursday night social nights at the Westerville Java Central. Come and grab a coffee and connect with the community: low stakes, chill environment, and tasty drinks. No registration is required; come as you are.

Join the Columbus AI community for our quarterly gathering — a casual, community-focused evening where everyone has a chance to share, learn, and connect. These open mic–style events give anyone in the community up to **5 minutes** to present a project, share a tool, pose a question, or offer a perspective on the evolving AI space. No slides required — just a welcoming space to exchange ideas and keep the local AI conversation moving. If you’d like to take the stage, message **Chris (the organizer)** with a **title and short description** of what you’d like to share. Whether you’re deep in the field or just getting curious, come connect with others building and exploring AI in Columbus. Sponsored by [Transform Labs](https://www.transformlabs.com/services)

⚠️ **IMPORTANT: You must sign up and buy a ticket here to attend:** [https://groupvibe.com/](https://groupvibe.com/) **Join the Columbus City Brunch Club and make new friends!** Each meetup brings together 4–6 people for casual conversations over brunch. We use the Groupvibe platform to facilitate the meetup and ensure everyone’s a good fit. **To attend, you’ll need to complete registration via this link:** [https://groupvibe.com/](https://groupvibe.com/) We’ll share the exact location of the upcoming meetup the night before only if you have bought a ticket or membership plan. **Why this works:** \* Smaller groups make real conversations easier. \* Discover new restaurants in your city, together. \* Curated lunch venues with good food and vibe. \* If you hit it off with your group, there’s plenty of time to hang out afterwards. **Note:** RSVPs on Meetup don’t reflect total attendance. Many attendees register directly via our website. The event on [Meetup.com](http://meetup.com/) is only a placeholder. This meetup is organized by Groupvibe, a small team passionate about helping people form meaningful friendships offline.