Data Architecture

Hi Everyone, This is our weekly open hackerspace evening! Usually from 19:00 :-) Feel free to drop by, come and nerd with us! See this Tuesday! We're in room 126, ring the room number and we'll open the door. We're located on the first floor

**3D Workshop** * **Ontwerpen met Fusion360** * **Scannen in 3D** * **Het gebruik van 3D printers** **Je bent nu welkom in de nieuwe locatie NewTechPark** Je kunt ook online aan deze fysieke bijeenkomst deelnemen. De bijeenkomst is dan op de locatie te volgen. Als je [hier](w.j.put@hccnet.nl) vooraf een mailtje stuurt kun je dinsdagavond tussen 19.00 en 20.00 uur inloggen met Jitsi voor vragen, of ter kennismaking met hcc!3D. Online neem je deel aan de bijeenkomst met [https://wij.hcc.nl/3D](https://wij.hcc.nl/3D) [(Alleen toegang als je zichtbaar bent met voor- en achternaam. )](https://wij.hcc.nl/3d)

Thierry Berger is bringing an exclusive Rustlang themed [Techy Cards](https://github.com/ThierryBerger/techycards) edition, come to play and go home with your playable booster! Date: Tuesday May 19th 19H30–21H30 Location: Bunk Hotel Utrecht Catharijnekade 9, Utrecht, NL

Are you a (Rust) meetup organizer or dreaming of becoming one? Join this session and get to know other meetup organizers! The meetup is on the first day of the conference at Kinepolis, during the first break, in the Reception room. The room is located across the entrance of the main stage on the 2nd floor. **Please note that you need a conference ticket to access the venue.** **What to expect / possible goals:** * Get advice on how to start your local Rust Meetup * Meet and network with other Rust meetup organizers from different cities and countries * Share experiences, successes, and challenges in running local Rust communities * Get insights on promoting diversity, inclusion, and accessibility in your meetup * Discover tools, resources, and collaboration possibilities between meetups

Do you want to meet fellow Women in Rust at RustWeek 2026? Join our friendly and vibrant community for lunch on Tuesday 19 May at 12.45pm CEST. Find us at a dedicated table in the lunch area! This will be an opportunity to share experiences, expand your network, and simply enjoy a chat with like-minded individuals. Please note that a RustWeek 2026 ticket is required to enter the venue. More info at https://2026.rustweek.org.

**Please note:** registration for this event is **not** via meetup.com; this is an announcement only! See below on how to buy tickets for the event. **RustWeek 2026!** RustNL is incredibly excited to announce the 4th edition of our conference. The world's biggest Rust conference includes one day of workshops, two days of talks (in 3 parallel tracks), a hackathon, social activities, and more! The conference, on Tue & Wed May 19-20, is the main event. **Conference tickets for individual developers** The regular price for conference tickets for individuals are priced at €237.50. With this link, you can get a 10% discount on individual tickets: [https://event.onliveevent.nl/rustweek-2026/register?code=RUSTNL-MEETUP](https://event.onliveevent.nl/rustweek-2026/register?code=RUSTNL-MEETUP). More info: [https://2026.rustweek.org/](https://2026.rustweek.org/) If your employer pays your ticket, we ask you to buy an "Employer-paid" ticket (€413 ex VAT), to help cover the cost of the conference. **Come meet the Rust Project team members** We are proud to host the Rust All Hands for the 2nd time, which takes place later in the week. Folks from the Rust project teams will be at the conference, so it will be a great opportunity to meet them and attend talks in the "Project track", with each project team (language, compiler, library etc) presenting on a current topic. **Location** The conference is held at Kinepolis Jaarbeurs in Utrecht, right next to the central train station.

Every Tuesday, the group 024 Waalrunners go for a run at a distance of between 7km - 10km depending on the group. Everyone is welcome to join, you just need to turn up at 20:00 on Tuesday in front of Cafe De Hemel. There are different routes every time, and the group welcome all new people to join them. [https://www.facebook.com/024waalrunners-710731759317504](https://www.facebook.com/024waalrunners-710731759317504)

Donderdag 21 mei 2026 is het weer tijd voor onze Techday: hét vaste moment waarop we kennis delen, elkaar inspireren en nieuwe ideeën direct in de praktijk brengen. Deze editie pakken we het aan als een conferentie in het klein. Drie sprekers, drie verhalen, één middag – drie verhalen voor de prijs van één. Wat kun je verwachten? **Dirk neemt een kijkje onder de motorkap van AI** AI voelt voor veel mensen als magie. In deze talk probeer ik de magie weg te nemen door een kijkje te nemen onder de motorkap. Een essentieel bouwblok van moderne AI is een neuraal netwerk. Als je begrijpt hoe een neuraal netwerk werkt, is het een stuk makkelijker om te begrijpen hoe en waarom een LLM werkt. De beste manier om iets te begrijpen is door het te bouwen, vanaf scratch. Dus dat gaan we in deze talk doen. Door dat te doen leren we over artificial neurons, activation functions, backpropagation en meer. **George vertelt hoe AI Cyberaanvallen verandert** George Schizas (extern), voormalig IT Manager, nu werkzaam als CISO, vertelt over zijn ervaringen in de Cloud Cyber Security en hoe hackers met behulp van AI nieuwe aanvalsmethoden kunnen gebruiken om kwetsbaarheden op te sporen en te exploiteren. Hij geeft voorbeelden van manieren om in Kubernetes omgevingen in te breken en noemt manieren om dit tegen te gaan. **Roland duikt in de wereld van de fraude fabriek** Als ontwikkelaar kom je dagelijks in contact met technologie en de laatste jaren natuurlijk ook vaak met AI. JIJ snapt heel goed wat de voordelen en de gevaren zijn, maar hoe leg je complexe onderwerpen als AI gegenereerde afbeeldingen, Voice Phishing en Hallucinaties uit aan je ouders, de buurvrouw, of je kinderen? Ik neem jullie mee in een realistische situatie waarin Anna en haar familie opgelicht wordt met behulp van verschillende technieken en hoe dit oplichters-landschap met behulp van AI verandert. **Wanneer:** Donderdag 21 mei 2026 **Wat:** Techday – conferentie-editie “AI kansen en valkuilen” **Voor wie:** Iedereen (!) die nieuwsgierig is en wil leren **Agenda** 14:45 - 15:00 - Inloop 15:00 - 16:00 - Neurale netwerken 16:15 - 17:15 - AI risico’s en kansen 17:15 - 18:00 - Eten 18:00 - 18:45 - Fraude fabriek We zien je graag op de Techday!

We’re back! On **May 21st**, PuXu returns to Acato in Utrecht for a meetup dedicated entirely to **Research**. **Speaker 1: Emmanuelle Savarit** Emmanuelle is a UX researcher with 20+ years of experience. She's built and led research teams at Facebook, Just Eat Takeaway, LSEG (Refinitiv), and Thomson Reuters. She ran her own UX research agency for 10 years. She's written two books, hosts the UX Research Club podcast, and now focuses on helping researchers increase their strategic impact, including navigating AI. In short: she knows what it takes to move research from tactical to strategic, and she's coming to Utrecht to talk about it. **Special Offer:** Emmanuelle is the author of *The UX Research Powerhouse*. As a PuXu attendee, you can [pre-order your copy](http://clicks.meetup.com/ls/click?upn=u001.NY3oBFzZ5LJDG7YcnfSAKt-2FPbu0mdbClRwu8GKKRoO80nKlP-2FLm90aUF5CQqytHZ3qPz_74u5-2F-2BkTZmgMdnIu03cC4mmjtImPovdZ1zhiEax5tCGl-2BX4fyxb41gNAMGCWV5p-2F3ZXnrHzXrYb-2FEX1gm6iU0hCqBeZf0X8TDiJ-2FF2Pb5b0AYKY0z73yUDJwsJeyVUq2KtnZTX6IPrsDNa2UkzczY3hKG3S2HRTZ-2F-2F-2B5qIwx3CPXatPQFxQ52SkLNZ5jtWr2BsPEXqg9XUqI4UVveDZFOzr6Jpxsj6HpP5WPTNn9JfRQGsEK6lvy8Funa0EQyQ5-2Fcs-2B47BimpzF-2BEXne3mS-2BZNzrupqrFFi2fX4yIrWqpynPk6sL8GL1wQYphmXVe60iss42yhd4nNcrL3QnxXpmXREmBBaQDTLdBvlEgh-2BlmcKlZdw6YOLqURK9zvY-2FZT5KaZSep0LjLq0ckOBsBXggyUAiy01ioYfPSic9ypG0U9487DG53iY3jWQMuNSrHZokvJpDhdJ90J3JwMV8sFus1jAghL1xl0LlFTEJpqn6t0IDZ1Yply0uZ5X2veN2tA6ExM9KeLmTIDEk7ps7HLzVl7BhlE3HPR0nzpsaeXQjsAOoU-2BnH0eHPtBMoFi4jTJ-2BzcDaUWHmnZT1Xq5B2aktBwrvpQR2rC-2B2F3HcHTn3UrTwP8UrRAlyo7TVk8S34miQEhNN6-2BmmpLC1LwWfU-2FC5CHRq0sQuuBynnS2qztg0oS1no5qCyhZ0QvtvBawQvEzT9) at a **15% discount** and get it signed during the event! **Speaker 2: Sabine Bakker** Sabine is an inclusive user research consultant at the Accessibility Foundation, supporting organizations with making their products and services accessible for users of all (dis)abilities. She knows the challenges that UX teams face in demonstrating their added value from her 10+ years of experience at the tech start-up Blendle, cybersecurity scale-up Zivver, and low-code SaaS Mendix. She now helps teams with gaining a competitive edge through inclusive research and co-creation “from a to y”. Her talk will point you to the importance of user experiences that are not reflected in the training data of LLMs and the “curb cut”-effects to be gained which no synthetic persona will provide. **Speaker 3: Bo Kusters** Service Designer at the Dutch Tax Administration. With millions of users, the team often sees the same generic functional and emotional needs recurring in their user research. To avoid reinventing the wheel every time, they developed an interactive, tarot-style card game. With this clever deck, they make complex user insights tangible, allowing internal teams to apply this data directly in their daily work. Learn during this session how to successfully translate abstract research data into a practical design tool that actually works for your team. **Event details** **When:** May 21 \| 18:30 – 22:00 **Where:** Acato, Oudegracht 231, Utrecht **Cost:** Free \(Includes snacks & drinks sponsored by Visma \| ProActive\) **Capacity:** 50 spots Stay tuned for more updates! Later this week, we’ll also share our *Utrecht Visitor Guide* for those traveling in to make a day of it. See you there!

Come along, lovely queer hikers! 🌿✨ This time we’re serving an easy-going queer nature moment with a short loop through **Landgoed Heidestein** near Zeist. Think dreamy forest paths, shimmering fens, a peaceful forest pond, and heather fields - a lot of diversity for such a short walk :) We’re teaming up with **Cocktail (COC’s group for LGBTQIA+ refugees & asylum seekers)** for this event, so besides soaking up nature, we’re creating space for connection, sharing stories, and learning from each other’s journeys and experiences. Expect a vibe that’s part hike, part picknick, part wholesome community exchange. 🌈 Bring your snacks and blankets, as we’ll pause along the way for a relaxed picnic moment together. Because queer joy isn’t just about where we go, but who we walk with. 💖 **Practical info** 📏 **Distance:** 5 or 7 km (loop walk) 📍 **Start:** Bus stop Prinses Margrietlaan, Zeist (5km option) Driebergen-Zeist station (7km option) 🏁 **End:** Back at the starting point 🥾 **Level:** easy - chill pace 🤝 **Meeting point:** outside the train station **Driebergen-Zeist at 13:45** or bus stop **Prinses Margrietlaan (Zeist) at 14:20** ❗You’re welcome to join from another direction. If you come by car you can park at P+R Driebergen-Zeist. Please note: we published this hike with Cocktail simultaneously, which is also why we lowered the participant number from Hiking Queer NL's side. Pack your: 🍱 snacks 🚰 water 🧥 rain coat/umbrella ☀️ sun screen 🏳️‍🌈 anything else you might need ❌ If you signed up and cannot make it in the end, please cancel your RSVP attendance so we know how many people will show up and someone else can take your place instead. 💗 A voluntary donation helps us to keep the Meetup group up and running :) you can either pay via a Tikkie or in cash after we finish the hike. *Hiking Queers Netherlands & Cocktail (COC)*

## Love is in the air…! Experiencing dating burnout? You're not alone. If you like deep conversations and are finally ready to get out and meet people irl, you've come to the right place! **No more swiping, skip the bad dates!** Due to the increasing size of our waiting list, and as per your frequent requests, this is our answer to you with a second event within Utrecht this May! ### *This is how it works:* * Before you arrive at the meetup, you fill in a fun 5-10 minute questionnaire on [affinitee.eu](https://affinitee.eu/au-event-5) (if you haven't already). We explore different aspects of relationship compatibility using this questionnaire. * The first one hour will be spent playing icebreaker games that are meant to induce deep conversations and to explore personality traits that don't usually show up in the first stages of a date. * We will then move on to try out a multitude of board/card games that are specifically chosen to explore various aspects of relationship compatibility (moral/political values, decision making skills, personal icks etc.) * You will have a chance to interact with everyone at the event. Towards the end of the event, you will also have an opportunity to share your contact details with one other person through our matchmaker. But you're of course welcome to connect with others on your own accord. * Our attendees typically report having had a wonderful evening having explored a multitude of deep philosophical conversations and leave with the fulfillment of having had met some interesting personalities (romantic & otherwise). So if this is what you're looking for, we guarantee that you'll not leave disappointed. **[!!IMPORTANT!!]** We recommend signing up through our website to check for compatibility against other participants. This also allows you to connect with a larger audience outside the event who're in search of better relationships. We believe in conscious, compatibility based matchmaking. Don't waste your time dating the wrong people!

(english/german below) **Bitcoin Pizza Dag!** Op 22 mei 2010 betaalde programmeur Laszlo Hanyecz 10.000 BTC voor twee pizza's — de eerste gedocumenteerde aankoop met bitcoin. Hij plaatste een bericht op een forum waarin hij BTC aanbood voor pizza; een andere gebruiker ging akkoord, bestelde de pizza's en leverde ze af. Die transactie werd later bekend als "Bitcoin Pizza Day". Laszlo bewees dat Bitcoin als ruilmiddel gebruikt kan worden. **Sluit je bij ons aan voor pizza-avond bij De Pizzabakkers! (vanaf 18:00)** RSVP zo snel mogelijk; we moeten reserveren bij De Pizzabakkers en er is beperkte plek. Zorg dat je je geladen Lightning-wallet meeneemt! *** **English: Bitcoin Pizza Day!** On May 22, 2010, programmer Laszlo Hanyecz paid 10,000 BTC for two pizzas — the first documented purchase using bitcoin. He posted on a forum offering BTC for pizza; another user accepted, ordering pizzas and delivering them. That trade later became famous as "Bitcoin Pizza Day," Laszlo proved that Bitcoin can be used as a medium of exchange. **Join us for pizza diner at De Pizzabakkers! (from 18:00)** Please RSVP as quick as possible as we need to make a reservation at De Pizzabakkers and there is only limited space. Be sure to bring your loaded lighting wallet along with you! *** **Deutsch: Bitcoin Pizza Tag!** Am 22. Mai 2010 zahlte Programmierer Laszlo Hanyecz 10.000 BTC für zwei Pizzen — der erste dokumentierte Kauf mit Bitcoin. Er postete in einem Forum und bot BTC für Pizza an; ein anderer Nutzer akzeptierte, bestellte die Pizzen und lieferte sie aus. Dieser Tausch wurde später als "Bitcoin Pizza Day" bekannt. Laszlo bewies, dass Bitcoin als Tauschmittel verwendet werden kann. **Begleite uns zum Pizza-Abend bei De Pizzabakkers! (ab 18:00)** Bitte antworte so schnell wie möglich; wir müssen bei De Pizzabakkers reservieren und es gibt nur begrenzten Platz. Nimm unbedingt deine geladene Lightning-Wallet mit!

**RSVP here via EventBrite [here](https://www.eventbrite.nl/e/you-and-your-brand-a-casual-networking-hour-tickets-1984283125243).** Expand your visibility. Join a casual online time to share about you, your brand and business, and learn more about other business owners, locally and globally. Share upcoming events and workshops, too. After each business owner gets the spotlight to share, we then move into a topic-oriented discussion. This month, the topic is begin chosen by [Isabella Maria Noguera, MSc](https://www.linkedin.com/in/isabellamarianoguera/) over of Be Your Brand Consulting. Every session closes with gratitude and a creative activity, so have a pen and paper, tablet, or something available in case we write/create/draw. **RSVP here via EventBrite [here](https://www.eventbrite.nl/e/you-and-your-brand-a-casual-networking-hour-tickets-1984283125243).** *-* *\*\*\*The only requirements are a minimum age of 18 years old, be a business owner or preparing to launch,* *and **at least three attendees** register to make it a worthwhile hour for everyone.\*\*\**

Customer identity resolution becomes increasingly complex as organizations scale across multiple systems, regions, and data formats. Traditional rule-based approaches often fail to keep up with data variability, require constant manual tuning, and struggle with real-time processing needs. This session presents a practical approach to building a scalable identity resolution pipeline using AWS services and modern AI techniques. The architecture combines data ingestion through Amazon S3 and AWS Glue, transformation pipelines using Spark on EMR, and machine learning models deployed via SageMaker for entity matching and standardization. Graph-based relationship modeling is implemented using Amazon Neptune to improve resolution accuracy by incorporating household and shared attribute context. We will walk through how machine learning models can be used for name and address normalization, how intelligent blocking strategies improve matching efficiency, and how feedback loops can be introduced to continuously improve accuracy. The session also highlights how serverless components such as AWS Lambda can be used for orchestration and real-time processing. **SPEAKER BIO** Mosaic Syed is a Senior Data Engineering and Cloud Solutions Architect with over 20 years of experience designing and delivering scalable, secure, and high-performance data solutions across global enterprise environments. https://www.linkedin.com/in/mosaic-basha-syed-92300856 **CALL FOR SPEAKERS** Learn more: [https://www.awscolumbus.com/get-involved/](https://www.awscolumbus.com/get-involved/) **THANK YOU** *VEEAM* for hosting our meetup! To learn more about *Veeam*, please visit their website: [https://www.veeam.com/](https://www.veeam.com/) **DIRECTIONS** 8800 Lyra Dr #450 · Columbus, OH go to 4th floor. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

**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** TBD **YouTube Link** TBD

**Abstract:** This is a practical playbook for building a production-grade data lakehouse. It walks through foundational principles — naming conventions, least-privilege access, automated CI/CD testing — before diving into medallion architecture. Furthermore, metadata-driven design patterns show how configuration tables and dynamic notebook orchestration eliminates hard-coded pipelines. The deck covers star schema modeling, guidance on choosing between Spark, Pandas, and SQL, and data quality enforcement using DQX with YAML data contracts. Finally, we dive into security best practices and performance optimizations. **Host:** Justin Shea, Mehdi Jeddi, Erik Pak, and Sou-Cheng Choi **Talk Format:** This is a hybrid event. To attend online, join us on Zoom here at 6pm: https://iit-edu.zoom.us/j/89379230295?pwd=NdETyE5sdYuSrvsrBZXSBFkUESBVkg.1 Meeting ID: 893 7923 0295 Passcode: 5t5WYn **Sponsor:** Adyen, UIC College of Business, and PyData Chicago co-host this event. UIC will provide the meeting site. Adyen will sponsor pizza and soft drinks for the onsite participants. **Address:** University of Illinois - Chicago, Douglass Hall, Room 220, 705 S Morgan St, Chicago, IL 60607 **Logistics:** “UIC Douglass Hall” is recognized on Google Maps, which can guide you through campus. Once you arrive, proceed to the second floor, room number 220

We will show how to build custom agents with Microsoft Agent Framework. Attendees will learn how to build and custom host agents when Microsoft Foundry is not a viable option.

QA or the Highway is a one-day, affordable, regional, professional conference featuring real-world experience and thought leadership in the QA and testing industry. This is a ticketed event please register here: https://www.qaorthehwy.com/ Featured Keynote Speakers: **Matthew-Hope Eland** **(Wizard at Leading EDJE)** \- An AI Specialist and Wizard at Leading EDJE who is known to teach software engineering\, AI\, and data science concepts in the most ridiculous ways possible\. Matt has used machine learning to settle debates over whether Die Hard is a Christmas movie\, reinforcement learning to drive the behavior of digital squirrels\, data analytics to suggest improvements to his favorite TV show\, and AI agents to play board games and create an AI agent with the personality of a dog\. Matt is the author of "Data Science in \.NET with Polyglot Notebooks" and "Refactoring with C\#" as well as several LinkedIn Learning courses\. Matt helps organize the Central Ohio \.NET Developer Group\, runs several blogs and a YouTube channel\, has a Master’s of Science in Data Analytics\, and is a current Microsoft MVP in AI and \.NET\. **Tatyana Arbouzova** **(CEO at Innovate QA)** \- Tatyana Arbouzova is an engineering and business leader with a strong background in Quality Engineering across multiple industries\, including Big Tech\, Healthcare\, and Entertainment\. She has held leadership roles at world\-class companies such as Microsoft\, VMware\, Disney\, and The Pokémon Company International\, where she focused on building quality\-driven cultures and scaling teams to deliver high\-impact products\. With decades of experience\, Tatyana has helped organizations transform their quality practices so teams can deliver software efficiently\, confidently\, and with measurable business outcomes\. Today\, Tatyana advises software companies on adopting AI to optimize quality practices and improve how software is delivered at scale\. She is also a passionate community builder and the founder of Innovate QA\, a thriving Seattle\-based community and conference for quality professionals\.

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.linkedin.com/company/transformlabs/) Sign up also accessible via [Transform Labs Luma](https://luma.com/transformlabshq)

**Building a great product is one thing—building momentum behind it is another.** Join **Senior Product Manager Adam Solaiman** and **User Experience Manager Tyson Smith** for a behind-the-scenes look at what it takes to turn complex ideas into scalable products inside large organizations. In this session, they’ll share how teams move from ambiguity to execution—navigating organizational complexity, aligning stakeholders, and continuously evolving products after launch. You’ll walk away with insights on how to: * Build and sustain momentum across teams * Adapt to changing priorities without losing direction * Scale products thoughtfully in complex environments Whether you're driving a new initiative or growing an existing product, this conversation will give you practical strategies to keep things moving forward. Come connect, learn, and swap stories with fellow product professionals. \-\-\- Food and drinks will be provided by Switchbox, our generous host. Free parking will be available at the front and back sides of the Switchbox Office.