Multivariate Testing

Stuck behind a desk all week? Time to climb some walls instead! No skills needed, just good vibes. Join us this evening at **RijnBoulder (Arnhem)** for a fun and relaxed bouldering session! Whether you're a seasoned climber or wanna try it for the first time, everyone is welcome. We’ll meet outside at the entrance, warm up a bit, and then hit the walls. Afterward, there’s always the option to grab a drink and chat. * **Where:** [Bouldercentrum RijnBoulder, Olympus 3, 6832 EL Arnhem](https://maps.app.goo.gl/fPR4qg7wdRTJHcYU6). We will be waiting inside, in/near the café. * **Experience needed:** None! (Bring your own climbing shoes if you have them. Rentals are also available.) * **Vibe:** Casual, fun, supportive Let’s climb, laugh, and maybe even impress ourselves a little! For more information on pricing of day passes and gear rentals, [check out this page](https://mountain-network.nl/klimcentra/locaties/bouldercentrum-arnhem/tarieven-rijnboulder-2025/) on the RijnBoulder website. First time? No problem! [Some information here](https://mountain-network.nl/klimcentra/sporter/eerste-keer-boulderen/). Their website is only in Dutch, but Google Translate to the rescue: [prices](https://mountain--network-nl.translate.goog/klimcentra/locaties/bouldercentrum-arnhem/tarieven-rijnboulder-2025/?_x_tr_sl=nl&_x_tr_tl=en&_x_tr_hl=nl&_x_tr_pto=wapp) and [instructions](https://mountain--network-nl.translate.goog/klimcentra/sporter/eerste-keer-boulderen/?_x_tr_sl=nl&_x_tr_tl=en&_x_tr_hl=nl&_x_tr_pto=wapp). And if you have any questions, just let us know. ⚠️ Disclaimer: Participants are responsible for their own safety.

Join us for some focused writing time. All writers and all experience levels are welcome and don’t worry, no one will see what you've written. This session is about getting your writing done and meeting other writers in your area. When you show up, say hello to everyone, grab a drink, and get your writing tools ready. Once you’re all settled, take some time to chat with your fellow writers. Once everyone’s arrived, I will lead quick introductions and then set the timer for our quiet and focused writing session. Afterward, we’ll have time to chat and get to know each other. We often talk about our successes and challenges as writers. If you don’t have time to stick around, no worries! **A note about the format** We don’t host critiques or readings. These events are a safe space for writers of all skill levels and genres to work on their craft, so no one will read or critique your writing. For our full event schedule, visit [https://shutupwrite.com](https://www.shutupwrite.com). **Other Important Details:** WiFi name/password: [PLEASE INCLUDE DETAILS] Travel / Parking info: [PLEASE INCLUDE DETAILS]

Kom op 15 januari 2026 gezellig bijpraten onder het genot van een hapje en drankje bij Het Gegeven Paard in Utrecht. Wees welkom! We zullen ruimte reserveren voor hen die graag een hapje mee-eten. Daarom is het wel zo fijn als je kenbaar maakt dat je komt. NB: De kosten voor het eten en drinken zijn voor eigen rekening, met het eerste drankje op kosten van Fronteers. Het Gegeven Paard is vlakbij station Utrecht gelegen. Het café bevindt zich op de begane grond van TivoliVredenburg, is ook toegankelijk met een rolstoel en beschikt over een rolstoeltoegankelijk toilet. Heb je een beperking waarbij wij het voor jou op enige manier ook gemakkelijker kunnen maken om deel uit te maken van deze bijeenkomst, stuur dan gerust van te voren een bericht naar anneke@fronteers.nl . We hebben je er graag bij :)

A meet up for Dutch Hackers in a Dutch bar after work or school. Join us to celebrate the new year and discuss all things hacker related! **IMPORTANT NOTE**: *The location has limited capacity of 120 people. We will be working with a guest list, so if you want to attend: please indicate so on this meetup. If you are not signed up, you will not be able to come in!* *If you signed up, but cannot make it, please remove your attendance since we will be able to let other people in!* **DefCon Holland rules** * Socialize * Be a nice human being * Press, headhunters & sales are not allowed * No sponsors **EVENT INFO** Date: Thursday 15th of January Location: Bar Josefien [Voorstraat 96, 3512 AV Utrecht](https://www.google.com/maps/place//data=!4m2!3m1!1s0x47c66f72d8f62715:0x8771f2262a9ba82d?sa=X&ved=1t:8290&ictx=111) Take over: 12:00 till 23:00 * **FREE ENTRANCE \* + FREE stickers** "Hacker" is not synonymous with criminal. A hacker is someone who finds a new and different way to do something"

¡Compartamos juntos con el grupo de personas más divertido de la ciudad!... ¡en español! No necesitas ser un hablante fluido o nativo.... ¡Solo atrévete a compartir! Te esperamos a las 20hrs.... ¡Entrada gratuita! ¡Nos vemos! ¡Hasta entonces! 😃 Let's share together with the funniest group of people in town!... in Spanish! You don't need to be a fluent or native speaker.... Just dare to share! We wait for you at 20hrs ....Free entry! Nos vemos! Tot dan! 😃 Facebook Group: https://www.facebook.com/groups/habladores/ Meetup Link: https://www.meetup.com/nl-NL/los-habladores/ Instagram page: https://www.instagram.com/los_habladores_utrecht/ Los Habladores!

**Building a Document Management System in the age of agentic AI** At this edition of the Almere Tech Meetup we welcome [David Stibbe](https://www.linkedin.com/in/dstibbe/) with a practical talk on building software in a rapidly changing AI landscape. In his talk, Lessons learned from developing a DMS in the age of Agentic AI, David shares the journey of developing the Document Management System at Dare. He reflects on how the system evolved, which technical and architectural choices were made, and what worked well or did not along the way. The talk focuses on real lessons from practice, especially in the context of emerging agentic AI. It offers insights for developers, architects, and tech leads who are building complex systems today and want to understand how AI is influencing both design and development decisions. The program is as follows: * **17.30** Door open, welcome drinks * **18.00**: Word of welcome by [Stijn Sprenkels](https://www.linkedin.com/in/stijnsprenkels/), serving of snacks * **18.15** Talk of David Stibbe * **18.45** Q&A, discussion * **19.00** Drinks and talks * **20:00** End Hope to see you all again soon!

Join us for an hour of writing! We’ve discovered that it’s strikingly helpful to write with other writers. See if it’s true for you at Factor-ij Amsterdam on Thursday mornings. Be it a book, blog, script, essay, dissertation, resume, melody, poem or just plain work stuff, you are invited to write it with us. No one will see what you've written or give you unsolicited advice. Instead of just thinking about writing, come and get some real writing done. SCHEDULE: 11: 15 AM - Quick introductions 11: 30 AM - Timer starts: write for 1 hour 12: 30 PM - The End: chat, take off, or keep writing OPTIONAL SOCIALIZING happens at 12:30 pm after the writing is wrapped. Writing is very solitary. Connecting (and sometimes even commiserating) with other writers is a cool thing. BEING LATE IS OKAY: just show up and get settled, then check-in with me after the session. (I’ll be the person with the Shut Up & Write! sign.) If you were on time, please be willing to make room for the friendly latecomer. Happy writing and I look forward to seeing you at Factor-ij! What Should I Bring? Whatever you need to be able to write! Bring earbuds/earplugs if you want to block the cafe’s overhead music or the occasional conversation by other patrons. Please come with your devices pre-charged, since we probably won't be always sitting somewhere with charging possibilities. Other Important Details: Travel by public transportation: 1. Take Tram 26 from the central station Amsterdam, and step out by the last stop. 2. Take bus 66 from the Amsterdam Bijlmer station, step out by Pieter Oosterhuisstraat, and further walk in the direction of the bus till the corner. FREE Wifi. Compulsory consumption is not required, but please do order a drink to honor our generous host.

We zien dat AI inmiddels door veel mensen en organisaties wordt gebruikt, vooral voor tekst, plannen en ideeën. Tegelijkertijd merken we dat dit gebruik vaak onzeker en oppervlakkig blijft. Mensen experimenteren, maar twijfelen: * Klopt dit wel? * Gebruik ik AI “goed”? * Haal ik er echt voordeel uit, of kost het vooral tijd? De kern van het probleem is niet een gebrek aan tools of kennis, maar een gebrek aan grip, overzicht en vertrouwen in het eigen oordeel bij het werken met AI. **Wat houdt deze workshop in?** We willen een kleinschalige pilot-workshop (halve dag) organiseren waarin we professionals helpen om: * AI anders te leren zien (als denkpartner, niet als antwoordmachine) * Bewuster vragen te stellen en context te geven * AI‑output te beoordelen in plaats van blind te volgen Het is nadrukkelijk geen technische training en geen overzicht van tools. Het is een leerervaring die zich richt op denken, beoordelen en professioneel gebruik. **Voor wie is dit bedoeld?** De Training richt zich op: * Niet-technische managers en professionals * Die veel werken met tekst, plannen en besluitvorming * Die AI al gebruiken (bijv. ChatGPT), maar daar nog te weinig zekerheid en rendement uit halen **Wat maakt deze aanpak anders?** * Interactief en herkenbaar: deelnemers werken met hun eigen praktijk en leren van elkaar * Beperkt en scherp: geen overload, maar drie kerninzichten * Veilig en menselijk: twijfel wordt genormaliseerd, niet weggepoetst Deelnemers weten na afloop wat ze “maandag anders doen” **Pilot** Deze workshop is opgezet als pilot. We verwachten dan ook eerlijke feedback om deze workshop nog gerichter in te kunnen zetten om professionals meer bewust te maken van de mogelijkheden en onmogelijkheden van AI. Deze workshop wordt verzorgd door Edgar Stormbroek en Ziryan Salayi 9:00 9:30 Inloop 9:30 - 12:00 AI in praktijk 12:00 - 13:00 Lunch 13:00 - 14:00 Vervolg AI in praktijk 14:00 - 14:30 Afronding en feedback

🎶 **La Cumbipeña – Tango Night** 💃🕺 📅 **Saturday\, January 17 \| 20:00–23:00** **📍 Café Averechts, Utrecht** **🎟 Donation-based** This edition invites us into the world of tango - a dance and music tradition rooted in life lived passionately, strong emotions, non-verbal communication and a bit (or lot?) of 'dramita' 😅. ✨ **Live music** by Pablo Mosteiro: an Argentine artist whose relationship with tango deepened after leaving Argentina, first in the US and now in the Netherlands. He shares both his own compositions and tango classics with great sensitivity and quality. 💫 **Tango basics workshop** guided by Yasmín Unfer, expressive dance teacher. This is not about memorizing steps, but about feeling, connecting, improvising and dancing according to each body’s possibilities. No previous experience needed - and if you have it, you may discover tango from a new angle. 😘 🎤 **Open Mic** later in the night to keep sharing music, folklore, cumbia and whatever wants to emerge. Come dance, listen, connect and celebrate together, the Cumbipeña way 🧉🎶 Everyone is welcome 💛 Lxs esperamos! 🔥

From the first steps, we enter what is truly my favourite forest in the Netherlands, located on the southern edge of the Veluwe. Unlike most Dutch landscapes, this area has real steep hills, rolling terrain, and a distinctly un-Dutch feeling, even though you are right in the heart of the country. In winter, quiet paths and pale light filtering through tall woodland along the Italian Road make the scenery especially striking. Halfway through the hike, we slow down for a cosy break at Castle Doorwerth. It is the perfect place to warm up with bites and drinks, enjoy the historic surroundings, and take a relaxed pause before continuing our walk. The route also passes the iconic Wodan Oaks. These ancient trees, estimated to be 400 to 600 years old, add a quiet sense of history and continuity to the landscape, which feels particularly powerful in winter when the forest is still, open, and calm. **📍When and where to meet?** We’ll meet at 10:50 at Wolfheze train station. https://maps.app.goo.gl/73ZsY4tHrmhBjF8HA ⏰ We **start walking a few minutes after meeting up** — we don’t wait for latecomers, as the forest calls and daylight is short this time of year. **🚗 Coming by car?** There is plenty and free parking next to the station. https://maps.app.goo.gl/6yR1resGumn1j4jq5 **⏸️ Planned Breaks** After 12 km: Lunch break at Castle Doorwerth https://maps.app.goo.gl/qLe6DfxL8C6mKrmZA **💸 Payment** Please pay as soon as you sign up: To keep things fair for everyone, if we don’t receive your payment within 48 hours, we will need to remove you from the participant list. If there’s a waiting list, this will happen sooner (in less than 48 hours). If that happens, no worries — you’re always welcome to sign up again if there’s space. 🌟 Early Bird Deal! Join now for just €4 — available for 3 days (72h). After that, the price will be €5. The Tikkie link has been removed as the event is now fully booked. If a spot becomes available due to a cancellation and you would like to take it, you can message me directly and I will share the Tikkie link with you. **👟 Good to know** * Refund policy: Cancellations are fully refundable up to 1 week before the event (This is Friday 9 January at 23h59). After this period, the fee becomes non-refundable. * Hike difficulty: Our hikes are moderately challenging. Please only join if you’re confident you can keep up with the group’s pace (5 km/ h)— it’s more fun for everyone when we can walk together without long waits. * If the pace is too challenging: We may kindly suggest you continue at your own pace. We’ll give you clear directions to the nearest bus or train so you can return comfortably. * At your own risk: You participate at your own risk, so please make sure you have appropriate insurance coverage for outdoor activities. * Payment note: With Tikkie we only see initials (e.g., J. Doe instead of John Doe). Please include your Meetup name in the payment note so we can match it easily. * Friends joining: If you bring a friend, make sure they also register and pay. * What to bring: Snacks, lunch, and water/ or hot thee/ coffee (depending on the hike distance). * Stay connected: Join our WhatsApp group to be the first to hear about future hikes — ask for the QR code during the hike. * T-shirts: Fairwear-certified organic cotton, eco-friendly inks — €25. Sustainable, odor-resistant, and perfect for hiking. Let us know your size and we’ll bring one for you.

Zaterdag, 17 januari 2026 – 10.00 – 17.00 uur AMSTERDAM Kosten: € 130,–, inclusief btw en lunch Facilitator: [Susanne Hazen](https://susannehazen.com/over/) Assistentie: Iris Pinkepank Taal: Nederlands We gaan deze dag werken met ons voorouderveld. We gaan healing **vragen** EN we gaan op zoek naar en ons verbinden met voorouders die ons kracht kunnen geven en ondersteuning kunnen bieden met de strubbelingen die we op ons levenspad tegenkomen. Aanmelden via: https://susannehazen.com/voorouderrituelen/

Ha mannen! Weer een reguliere ManKracht meetup op de vrijdagavond in Amersfoort! Zoals altijd is de intentie voor onze meetups op locatie om een gemakkelijke, veilige en open atmosfeer te ervaren waarin we allemaal kunnen delen of inbrengen wat ons bezig houdt als man. Uiteraard zijn tijdens de ManKracht Avond nieuwe deelnemers welkom, we streven zoals altijd naar een groepsgrootte aan van 6 tot maximaal 10 man. Hier kort wat belangrijke info op een rijtje: * De offline meetup begint stipt om 20:00, vanaf dat moment zijn de 'deuren' gesloten. We vragen je dus om uiterlijk 5 minuten van te voren aan te komen. Je bent vanaf 19:30 welkom. * De avond duurt tot ongeveer 21:30. Voel je vrij om daarna het gesprek met andere deelnemers voort te zetten op een andere locatie (café/bar/kroeg). * Graag op tijd de RSVP in te vullen i.v.m. beperkte plaatsen. Mocht je op tijd weten dat je verhinderd bent, graag je RSVP aanpassen zodat mannen op de wachtlijst op tijd weten dat ze toch kunnen deelnemen. * Voel je vrij om een vriend mee te nemen, geef dit in dat geval ook even aan in de RSVP. Hopelijk zien we elkaar weer en mocht je nog vragen hebben dan hoor ik het graag natuurlijk. P.S. voorlopige locatie is thuis bij Daniel, kan evt nog veranderen,

Ben jij gefascineerd door de wereld van hacking en cybersecurity? Goed nieuws! Wat ooit een exclusieve serie workshops was voor studenten van NOVI, is nu toegankelijk voor iedereen met een passie voor hacking. 🚀 **Hack Friday** is jouw wekelijkse dosis cybersecurity praktijk. Elke vrijdagochtend duiken we samen in de diepe, duistere wereld van een nieuwe machine of challenge, onder de deskundige begeleiding van een van de cybersecurity experts van NOVI. Het is de perfecte manier om je skills te testen, te verbeteren en iets nieuws te leren in een vriendelijke en ondersteunende omgeving. 🛠️💻 ### Wat heb je nodig? * **Een werkende Kali Linux installatie**: Zorg dat je klaar bent om de uitdaging aan te gaan met je eigen Kali Linux setup. * **Een nieuwsgierige geest**: Heb je zin om te leren en uitgedaagd te worden? Dan pas je perfect in onze Hack Friday! ### Waarom meedoen? * **Leer van de besten**: Onze cybersecurity experts staan klaar om hun kennis te delen en je door de challenges te begeleiden. * **Wekelijkse uitdagingen**: Elke week bieden we een nieuwe machine of challenge aan, zodat je je vaardigheden kunt blijven ontwikkelen. * **Ontmoet gelijkgestemden**: Sluit je aan bij een community van enthousiaste hackers en cybersecurity professionals. ### Details: * **Wanneer**: Elke vrijdagochtend * **Waar**: op locatie in Utrecht * **Voor wie**: Iedereen met een interesse in hacking en cybersecurity, van beginners tot gevorderden. Ben je klaar om je hacking skills naar een hoger niveau te tillen en deel uit te maken van onze groeiende community? Sluit je dan aan bij Hack Friday en daag jezelf elke week uit met nieuwe en spannende cybersecurity avonturen! 🌟🔒 Registreer nu en laat zien wat je in huis hebt! Wij kunnen niet wachten om je te ontmoeten.

Hello group! Let's start the new year with an awesome event full of music, dances and food from all over the world. We don't need to leave the country to enjoy other cultures's traditions. I hope you can join me at this new adventure, I can't wait to meet you all and have a great time! Address: 24950 Riding Center Drive, South Riding, VA 20152

We will be meeting at Starbucks to learn together. Come with an online class you're already going through or an interest and we will try to connect you with a course where you can learn it. Already have a skill you want to contribute to a Kaggle Datascience competition? We will work on these too! Laptop required :)

**The Test Tribe 2nd Washington Meetup – Designing a Modern QA Organization: Structure, Skills, and Shared Ownership** AI is accelerating software delivery at an unprecedented pace-but speed without structure introduces serious risk. In today’s landscape, the traditional “testing bottleneck” isn’t just a delay-it’s a business liability. This session explores how Quality Engineering must evolve from a siloed function into a strategic, distributed capability-one that balances rapid AI adoption with strong human oversight. Moving beyond basic automation, this talk introduces the concept of Distributed Quality Governance, where quality becomes a shared responsibility across engineering, product, and leadership. Expect a practical, leadership-focused discussion that cuts through AI hype and addresses the real challenges of testing complex, AI-assisted systems-while ensuring accountability, trust, and long-term resilience. **Event Details** * **Date: 21st January 2026 (Wednesday)** * **Time: 6:00 PM – 8:00 PM EDT** * **Location: 1501 Langston Blvd. Arlington, Virginia** **Session: Designing a Modern QA Organization: Structure, Skills, and Shared Ownership** **Speaker: Alekhya Guduri** **About the Session** In an era where AI-generated code is accelerating delivery, quality can no longer be treated as a final checkpoint. Instead, it must be embedded, intentional, and governed. In this session, Alekhya Guduri presents a blueprint for building a modern QA organization that operates as a strategic business function. You’ll learn how to shift from centralized testing teams to shared ownership models, while introducing guardrails that ensure responsible AI use across the delivery pipeline. From defining a Materiality Matrix to identify where AI risks are too high to ignore, to implementing Human-in-the-Loop frameworks, this talk provides actionable guidance for leaders navigating AI-driven engineering environments. **Key Takeaways** * The Materiality Matrix: How to objectively prioritize AI risks based on business impact and technical complexity * Distributed Governance: Transitioning from centralized QA to shared ownership in AI-driven CI/CD pipelines * Responsible AI Guardrails: Practical Human-in-the-Loop frameworks to prevent bias, hallucinations, and silent failures **About the Speaker** Alekhya Guduri is a seasoned technology leader whose career sits at the intersection of engineering execution, operational excellence, and innovation. As Director of Engineering at Indeed, she focuses on building high-performing organizations that treat quality as a strategic advantage, not a last-mile activity. With deep experience scaling complex systems and leading cross-functional teams, Alekhya works at the forefront of shaping how AI and human judgment coexist within modern software delivery. She is a strong advocate for distributed governance, responsible AI practices, and the evolution of Quality Engineering into a trusted business partnership. **Why You Should Attend** * Learn how to design QA organizations for AI-driven delivery * Understand how to balance speed with responsibility in modern pipelines * Gain leadership frameworks for shared ownership of quality * Move beyond AI hype to practical, defensible testing strategies * Connect with Washington-area QA, engineering, and tech leaders **About The Test Tribe** **The Test Tribe** is the world’s largest software testing community, empowering testers globally since 2018. With 7**00+ events** and **150K+ members** across **130+ countries**, we bring testers together to learn, grow, and connect through meetups, conferences, cohorts, masterclasses, and more. By RSVPing, you agree to our Terms and Conditions and Privacy Policy and consent to be contacted by The Test Tribe and our event partners.

Let's get together in a warm and open atmosphere to talk about ethical non-monogamy and how we actually do it. Ask for advice, give some in return, meet and mingle with your peers. Let's kick back and get to know each other and learn a few things. TOPIC: What would you like to do differently in your relationships going forward this year? What did you do last year that really didn't work? What's your stretch goal? The location of our group will rotate between VA and MD. This week, we'll be in VA back at home with our most frequent host. As usual we'll send out the details on the morning of the event. FOOD: bring food that supports the diet you are undoubtedly on this month. Please consider bringing a vegetarian or vegan option; we do currently have active members who need these options. Cut-up fresh fruit is always great! If you don't feel like schlepping, we also always appreciate a donation. Please note: we share the address on the morning of the meeting, via the messaging/email system here. If you don’t have the details by Friday noon, you will need to message us directly to get them.

Y’all are invited to a boot-stompin’, toe-tappin’ country line dancing night with Social Sips & Bites. We’re bringing together good music, a lively dance floor, and even better company for a night full of classic country vibes. The night kicks off with a line-dancing lesson, so no experience is needed. Whether it’s your first two-step or you already know a few classics, you’ll be guided through the moves before the open dancing begins. After that, it’s all about country hits, cold drinks, and enjoying the rhythm together. Come learn the steps, feel the country vibes, and dance the night away with Social Sips & Bites.