FinTech

Building on the success of the previous events, the **DevBP** series is back for the **14th time** with two great talks. **AI doesn’t fix weak foundations, it exposes them**. Messy data, unclear definitions, and buried business logic quickly become blockers. This time, we’ll **explore the foundations we need to strengthen** to build truly AI-ready systems. This English-language event will be held at the **Colossyan Budapest office**, where we'll provide snacks and drinks to fuel conversations. Arrival is from 17:30, Announcements and agenda at 17:55, first presentations will start at 18:00. \-\-\- **AI Exposed Our Data Gaps — Lessons from a CDP Migration on Building a Governed, AI-Ready Platform** with **[Szabolcs Magyar - Colossyan](https://www.linkedin.com/in/szabolcs-magyar/)** During our CDP migration, we realized that AI doesn’t fix data problems - it exposes them. Unclear definitions, weak ownership, and undocumented assumptions quickly become blockers when AI systems start querying your analytics layer. In this talk, I’ll share how we used dbt and stronger data governance to turn our analytics stack into a more reliable, AI-ready platform. I’ll walk through the key architectural decisions, trade-offs, and lessons learned while modernising a production system. **Digital Archaeology: Recovering Lost Business Logic in Legacy Systems** with **[András Lendvay - Inivate](https://www.linkedin.com/in/andraslendvay/)** Effective AI integration and organizational performance both fail without structured institutional knowledge. In modern organizations, this knowledge is often buried within undocumented legacy code as “hidden” logic and critical business rules. This session explores the methodology of digital archaeology: reverse-engineering systems to extract the “why” behind the “how,” ensuring that both human teams and AI agents have the foundational data governance and definitions required to function. \-\-\- Come learn and connect with other tech enthusiasts. See you there! You can also find the recordings of previous events on the [@DevBPMeetup YouTube channel](https://www.youtube.com/@DevBPMeetup).

Enjoy your time learning and practicing public speaking with Budapest Toastmasters! There is no need to speak or any previous experience in Public Speaking. --- 👉Keycode: 12, 3rd Floor. Please arrive by 6:20 PM, the meeting starts at 6:30 PM👉No registration or dress code is needed, the event is FREE.👉NOTE: We will have signs in the place so you can locate easily the Toastmasters Meeting room. --- Toastmasters International is a world leader in communication and leadership development. Our membership is 313,000 strong. Members improve their speaking and leadership skills by attending one of the 14,650 clubs in 126 countries that make up our global network of meeting locations. The world needs leaders. Leaders head families, coach teams, run businesses, and mentor others. These leaders must not only accomplish but must also communicate. By regularly giving speeches, gaining feedback, leading teams, and guiding others to achieve their goals in a supportive atmosphere, leaders emerge from the Toastmasters program. Every Toastmaster's journey begins with a single speech. During their journey, they learn to tell their stories. They listen and answer. They plan and lead. They give feedback—and accept it. Through our community of learners, they find their path to leadership.

Come and play boardgames with others in English! This event is hosted by the [Játszóház projekt](https://www.facebook.com/jatszohazprojekt). This group organizes game nights, they provide the games and explain the rules if you need it. They have a huge collection of board games, check it out [here](https://www.facebook.com/events/1200101185612794). If you wish to play with a specific game, they will ask what games to bring, usually on the day of the event in a facebook post. Check out the [event on facebook](https://www.facebook.com/events/1750065366402814) for more information. We usually split up into smaller groups based on games, and switch as the night goes on, so you can arrive late. You can bring your own game or choose one from the pile! ***Important*** **This event is not free!** You will have to buy a wristband at the entrace for 1000 HUF (500 HUF for students). You can pay with cash or you can buy your ticket [here](https://akvariumklub.hu/programok/hetfoi-tarsasozas-az-akvariumban-board-game-night/). You can buy drinks and food at the bar, please don't bring your own — — — Let me know if you have any questions, you can contact me or ask in the comment section. We also have a WhatsApp group chat, feel free to join [here](https://chat.whatsapp.com/JThEZv724MJ3hvnwBpfJA7)A

**This week's venue: Beer People \| Lázár utca 7\, Budapest 1065** We hold a bi-weekly workshop to encourage creative writing where we share pieces of creative writing and solicit feedback from the other attendees. Some members also use the forum to find others with whom to collaborate, edit work, and/or brainstorm plot, themes, settings, and so forth. And from time to time, we participate in competitions, recite and/or offer material for events organized by other groups. At the moment there is no prompt for this particular meetup. Instead, writers are invited to submit something they have (or are working on) or to craft a short story specifically for the event. Of course, there's no pressure to submit something. Many participants are interested in hearing ideas, questioning the authors, and examining style and technique. Often, we explore other published works as well. The submission guidelines are as follows: 1. limit the piece to 850 words (to give enough time for any other submissions being read at the event); 2. make the text available (though you can read it aloud) for the other attendees. Many authors bring a few printed copies, others post their work in the comments of the meetup; 3. have a question in mind for the group about the submission; and, 4. If offering something from a longer work, be prepared to give a little bit of background first.

Indítsd 2026-ot argentin tangóval! Nincs szükséged semmilyen előzetes tánctudásra, és egyedül vagy párban is jelentkezhetsz! Várunk szeretettel minden tangózni vágyót! Oktató: Szeghalmi Endre Kezdés: 2026. jan. 12., hétfő 20:00 – 21:00. Az órák minden hétfőn ugyanebben az időpontban folytatódnak. Helyszín: Roxy Stúdió, Tátra u. 4. Jelentkezés és további infók: A [www.tangolibre.hu/tango-tanfolyam/](http://www.tangolibre.hu/tango-tanfolyam/?fbclid=IwZXh0bgNhZW0CMTAAYnJpZBExbDFsUmtNd2dIQVpmSHY3TXNydGMGYXBwX2lkEDIyMjAzOTE3ODgyMDA4OTIAAR50fTXksGSsXPYTo3IYigrZIXxtxdytBSer6v-jm9Y7HrcgPGLXn9R-dfaPCg_aem_0misiL79POQIY53C46m1Mw) oldalon találsz minden részletet, és itt tudsz regisztrálni. ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ Start 2026 with Argentine tango! No prior dance experience is required, and you can sign up either alone or with a partner. We warmly welcome everyone who would like to dance tango! Instructor: Endre Szeghalmi Start: Monday, January 12, 2026, 8:00–9:00 PM Classes will continue every Monday at the same time. Venue: Roxy Studio, Tátra u. 4. Registration and more information: [www.tangolibre.hu/en/tango-classes-for-totally-beginners/](http://www.tangolibre.hu/en/tango-classes-for-totally-beginners/?fbclid=IwZXh0bgNhZW0CMTAAYnJpZBExbDFsUmtNd2dIQVpmSHY3TXNydGMGYXBwX2lkEDIyMjAzOTE3ODgyMDA4OTIAAR50fTXksGSsXPYTo3IYigrZIXxtxdytBSer6v-jm9Y7HrcgPGLXn9R-dfaPCg_aem_0misiL79POQIY53C46m1Mw)

Every Saturday at 8:00 PM, we gather in the city to share languages, cultures, and conversations. [[Click this whatsapp groupchat link to join](https://chat.whatsapp.com/CGM1Jm8JfNS291xA1zMobk) ] Our group is made up of friendly 20s–30s people — locals, expats, and travelers alike — who come together to meet new people and explore different ways of thinking. Whether you’re new to Budapest or call it home, this meetup is your chance to connect in a relaxed, open-minded space. Join us to swap stories, practice new languages, and build genuine friendships across cultures.

Meetupsorozatunk tavaszi eseményére várjuk az érdeklődőket! A programban két előadást tervezünk, az egyik a nagy adatplatformok (Databricks, MS Fabric, Snowflake) 2026-as újdonságairól szól, a másik egy esettanulmány lesz. 🏢 **Helyszín:** Carl ZEISS Digital Innovation Hungary Kft. Agora Park - HUB 3 épület, 3. emelet. **📍 Cím:** 1138 Budapest, Esztergomi út 31-39. 📅 **Időpont:** 2026\. március 31\. kedd 18:00\-20:00 🗣 **Nyelv:** Magyar **Előadások** * ***Datamesh a gyakorlatban: domain-alapú data product és LLM a marketing szolgálatában*** Az előadás röviden bemutatja, hogyan jutottak el a data platform csapatok a centralizált megoldásoktól a datamesh szemléletig, és milyen szervezeti, technológiai változásokat hoz a domain-orientált adatkezelés saját példán keresztül: milyen szerepe van a domain csapatoknak, hogyan kapcsolódnak egymáshoz, és hogyan épül fel az adat-ökoszisztéma. Végül egy konkrét data productot mutatok be, amely nagy nyelvi modellekre épül, nyilvános információkat szintetizál és marketing csapatokat támogat hatékonyabb értékesítésben. [File Mátyás](https://www.linkedin.com/in/matyas-file-7b88b6120/), Carl ZEISS Digital Innovation Hungary * ***Data Engineering a Microsoft Fabricban*** Az előadás az atlantai [FABCON](https://fabriccon.com/) konferencián bejelentetett újdonságokat mutatja be, kitérve az adatplatformok fejlődését meghatározó iparági és technológiai trendekre is. [Arató Bence](https://www.linkedin.com/in/bencearato/), BI Consulting **📝 Napirend** * 17:30 Ajtónyitás * 18:00 Előadások * 19:40 Kötetlen beszélgetés * 20:00 Meetup vége 🎉 A cateringet és a helyszínt ez alkalommal a [Carl ZEISS Digital Innovation Hungary kft](https://www.zeiss.com/corporate/en/about-zeiss/future/new-business-at-zeiss/zeiss-digital-partners.html).[ ](https://www.zeiss.com/corporate/en/about-zeiss/future/new-business-at-zeiss/zeiss-digital-partners.html)biztosítja. 🎥Felvétel nem készül az eseményről, csak személyes részvételre van lehetőség. *Information for international members:* *\- This is a Hungarian speaking event\.* *\- There will be no streaming or recording\.*

Beyond Simple Solutions: Cynefin, Antifragility, and the Art of Learning in Uncertain Environments With [Gábor Erényi.](https://www.linkedin.com/in/gaborerenyi/) In a complex world problems don’t behave the way we expect them to—and trying to manage them with simple or complicated methods often makes things worse. During this meetup, we’ll explore the Cynefin framework and how it helps you to understand different types of situations and respond accordingly. We’ll look at what truly complex environments require, how learning and adaptation emerge from uncertainty, and how ideas from antifragility can help us not just survive volatility but ride on its waves. Expect a mindset shift that you can apply the next day.

This workshop is designed to use the power of your intuition to create your own work of art. No previous artistic experience required — just bring your positive energy and I'll provide all the materials you need. **Fee: 8500Ft** At the end of the workshop, you will have created your own intuitive abstract painting and gained the confidence to express yourself spontaneously on canvas. The first part consists of 30 minutes, during which you draw various spontaneous lines on your canvas with your eyes closed and follow your intuition. The next part is about colouring the different spontaneous forms created by the intersecting lines. You can freely mix colors and paint within the shapes, while I guide and support you through the entire process.

A női tangó technika gyakorlása segít abban, hogy magabiztosabban és elegánsabban táncoljunk, valamint könnyebben kapcsolódjunk a partnerünkhöz és a zenéhez. Hogy ne csak követőként, hanem tudatos táncosnőként legyünk jelen a táncban. **Mikor**: Kedd, 18:00 – 19:00 **Hol:** Roxy Stúdió, 1136 Budapest, Tátra utca 4. ✦✦✦ **Miért fontos a női technika a tangóban?** -Javul a tartás, az ölelés, a sétatechnika, a stabilitás és az elegancia -Izgalmas díszítésekkel szépítjük a táncot -Hogy ne csak követőként, hanem táncosnőként is jelen legyél ✦✦✦ **Tematika** Az órákat bemelegítéssel kezdjük, majd az adott napi témával folytatjuk (pl. tartás, séta, disszociáció, giro, boleo, enrosque, díszítések stb.). A cél olyan technikai alapok elsajátítása, amelyek hosszú távon is segítik a fejlődésedet. **Ruházat** Kényelmes öltözet ajánlott. Lehetőleg hozz magaddal magassarkú cipőt is. További részletek: [https://tangolibre.hu/arak/](https://l.facebook.com/l.php?u=https%3A%2F%2Ftangolibre.hu%2Farak%2F%3Ffbclid%3DIwZXh0bgNhZW0CMTAAYnJpZBExbDFsUmtNd2dIQVpmSHY3TXNydGMGYXBwX2lkEDIyMjAzOTE3ODgyMDA4OTIAAR6UMmb0UoScQqD_vY2si7YaoEL3eIt8sfl5_Umx1LOW3RE_yq1xpuO6AwQLiw_aem_79bdLWqEbvzUx5qtFeyneA&h=AT7a1OP5evVEHDcL1uUSIGhfFxkDzd37eVA1AGyELRZYfgq32JCYYoXLT6i2nOlRLNCuSfgbAqgcBIvkICHRxLTe9O522W5uKHL7ylZqitMdwj0lFPVQhxReRbq4PahKY2cBhvq_N8rHFCKPHKt8f81yHuxw_i3s9b4&__tn__=q&c%5B0%5D=AT6G1SRCcbuOonOjMDArF7zv6zzXg6TL30pzfPbLwkmUdqxAVtAkaebCIfT23D8QPA9-zyZxrXaset57fLmMJOmvIABzUucuXls3bJmthLKQq09teRoryNetMqhkBNlxKr0FPj_q9CFE178EVkVduxOJ9dEN1hq1kjY) Nemsokára találkozunk! \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- Women’s Tango Technique with Andrea Practicing women’s tango technique helps you dance with more confidence and elegance, and connect more easily with your partner and the music. So that you are present in the dance not only as a follower, but as a conscious and aware dancer. **When:** Tuesday, 18:00–19:00 **Where:** Roxy Studio, 1136 Budapest, Tátra utca 4. ### Why is women’s technique important in tango? * Improves posture, embrace, walking technique, stability, and elegance * Adds beautiful and expressive embellishments to your dance * Helps you be present not only as a follower, but as a dancer in your own right ### Dress code Comfortable clothing is recommended. Please bring high heels if possible. More details: [https://tangolibre.hu/en/prices/](https://tangolibre.hu/en/prices/) See you soon! ***

This month's meetup is about the **[Titans](https://arxiv.org/abs/2501.00663) neural network architecture** published by Google Research: The goal of the architecture is to: * scale transformer-based sequence models for tasks requiring very long context * enable test-time memorization This allows models to maintain long-term memory effectively while running—without the need for dedicated offline retraining. We'll discuss the Titans architecture, with a focus on its implementation of the long-term memory module: * how neural networks can act as memory vs. classical fixed-size recurrent states * how this type of long-term memory compares to traditional RNNs, and why it enables models to learn new context on the fly We will also take a look at the **[MIRAS framework](https://arxiv.org/abs/2504.13173)**, which provides a higher-level abstraction for designing sequence models. The key idea of MIRAS is that sequence model architectures—from transformers to linear RNNs—can be viewed as complex associative memories under the hood. We'll see how Titans fits into this framework of neural network design, and why the authors state that Titans and MIRAS can: **"combine the speed of RNNs with the accuracy of transformers."** *** **Follow-up from the last event** HOPE, the reference architecture for Nested Learning, is built on a modified version of the Titans architecture. At our last event, we didn’t have time to discuss many important details about how HOPE is built. So, the March meetup will also act as a follow-up for anyone who missed some of the underlying architectural details last time. === ENTRY DETAILS === \- QR code with entry information will be available soon\, in the "Photos" section of this event page\. \- Gate closes at 18:15 \- no late entries\.

A mesterséges intelligencia ma már nem jövőkép, hanem a mindennapi működés része. De mit jelent ez a gyakorlatban egy vállalkozás vagy szervezet számára? Hogyan lehet az AI-t nemcsak kipróbálni, hanem tudatosan beépíteni a működésbe? Ezen az estén vendégünk **Balogh Dávid**, az *AI-vezérelt vállalkozás* című könyv szerzője. Dávid vállalkozóként és tanácsadóként több száz hazai cég tapasztalata alapján mutatja meg, hogyan válhat a mesterséges intelligencia valódi vezetői eszközzé – nem technológiai hype-ként, hanem a hatékonyabb működés részeként. Az est célja – a Leannovation közösség szellemiségéhez illeszkedve – a közös gondolkodás, tapasztalatmegosztás és inspiráció. Ha érdekel, hogyan találkozik a folyamatos fejlesztés szemlélete és az AI által nyitott új lehetőségek világa, tarts velünk! A témabeszélgetés után Lean Coffee meetinggel folytatjuk:-) Az esemény látogatása Leannovation Egyesületi tagsággal díjmentes. Részletek, csatlakozás: https://leannovation.hu/leannovation-egyesulet/ Az eseményen kép- és hangfelvétel készül. Várunk minden érdeklődőt!

Central Ohio Radio Enthusiasts—CORE—is an informal community for anyone enthusiastic or curious about radio—whether you're new to radio and want to learn or you've been tinkering for years and want to share. Ham radio operators, GMRS users, Meshtastic fans, software-defined radio nerds, makers, and technical and non-technical folks are all welcome. No experience required or expected. This month we have **WiFi HaLow: Introduction and Practical Use** with **Alex Barbur**. Details are are [core.radio](https://core.radio).

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

NFT's are here to stay folks! This is a group for like minded people interested in understanding, leveraging, using, creating for, profiting from, trading too i suppose, NFT's.. everything around them, complexity, fear and exploits, best practices and more. **PLUS** This group will talk AI ART tools, techniques, artists, video, audio, prototypes and more in the AI assisted production space- ART specifically, but we can get into any aspect of some of the cooler things happening in AI in general.

## **Columbus Bitcoin Meetup – Event** Join us for another great evening dedicated to Bitcoin, learning, and community. We will be gathering in the private room at Olentangy Brewery for an evening of conversation, education, and fellowship with fellow Bitcoiners. This special event will feature three guest speakers sharing insights from across the Bitcoin ecosystem. ### **Guest Speakers** **Lindsay Faust** Relationship Manager at River **Andrew Tilmann** CEO of the Midwest Bitcoin Summit **Carlos Estrada** Founder of Coin Vigilante In addition to speaking during the event, Andrew Tilmann will also be available for a meet and greet. This will be a great opportunity to ask questions about the upcoming Midwest Bitcoin Summit, taking place September 23 and 24 at the Columbus Convention Center. ### **Midwest Bitcoin Summit Discount** Early Bird pricing ends **April 1st**, but you can still save **21%** by using the promo code: **COLUMBUS** Use the link below to apply the discount: [https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus](https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus) ### **Event Details** This will be a three hour event, with speakers beginning just before 7:00 PM. There will be plenty of time afterward for networking, meeting new friends, and continuing the conversation. Food will be provided. We look forward to seeing you there! ***

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

**The Data-Driven Brand: Using Analytics to Shape Perception** Can you use analytics to improve tacos? This being CBUSDAW, we think the answer is probably “yes”, but we’re not sure how to implement or test this theory. For our April meetup we’ve got Sara Kear, CMO of Condado Tacos, to investigate this delicious question. Sara will explore how she blends quantitative data and qualitative customer feedback to shape brand positioning and drive business decisions. We all know that marketing and analytics go way beyond attribution. Sara will show how Condado uses customer insights to inform product and pricing strategy. She’ll also highlight how Condado leverages customer feedback at scale to influence operational priorities, positioning marketing as the voice of the customer across the organization. In the last 12 years Condado has gone from one location in Columbus to 52 locations across 10 states, so we’re guessing there’s more to that growth than really good guac (though the guac probably helps). Ultimately, this talk focuses on the intersection of art and science—using data to inform creativity and build a brand that resonates with customers in a measurable way. **About Our Speaker** Sara Kear is Chief Marketing Officer at Condado Tacos, where she oversees brand, restaurant design, menu and pricing strategy, off-premise including catering, and customer data strategy. Since joining in 2021, she has helped grow the brand from 19 to 52 locations while building a data-driven marketing organization focused on loyalty and customer insights. Condado has since been named to the Inc. 5000, recognized as Breakout Retailer by Chain Store Age, and consistently ranked among FastCasual’s Top 100 Movers & Shakers. Thanks to our 2026 sponsors: [Clarivoy](https://www.clarivoy.com), [What Box Consulting Group](https://www.whatboxconsultinggroup.com), [Conductrics](https://www.conductrics.com), and [Piwik PRO](https://piwik.pro) More info at [cbusdaw.com](https://cbusdaw.com)

If you are interested in selecting investment choices for your 401(k) or other workplace savings plan, minimizing your income tax liability, or identifying the most effective investments for your brokerage account, we are the group for you. We are a local chapter of Bogleheads**®**, whose investment strategy can be found here: https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy Or you can peruse the Boglehead forum here: https://www.bogleheads.org/index.php I look forward to seeing you there. Mark Vonder Haar