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What happens when **Data** **Streams**, **Kafka Queues** and **LLMs** walk into a meetup in Athens? See for yourself! **Viktor Gamov** \- Principal Developer Advocate \(Confluent\) **and** **Sandon Jacobs** \- Developer Advocate \(Confluent\) will be dropping by to talk about: * **The Missing Protocol: How MCP Bridges LLMs** **and Data Streams** \- Viktor Gamov * **What you can do with a Kafka Queue** \- Sandon Jacobs Join us for an exciting and insightful evening, get to know the growing community while geeking and networking! 📍 You will find us at **ImpactHub Athens,** Karaiskaki 28, Athens 105 54 🕡 at **6:30 pm** 📅 on the **22nd** of **April** Big shoutout to **Confluent** for making this event happen! Their active support is what helps the community grow even bigger! 💪

We are pleased to bring you two talks this time. This event will be held in the offices of our sponsor Moro Technology, 28is Oktovriou 5, Omonia square, Stoa Trikoupi. **1st talk:** "Building with Antigravity" by [Mete Atamel ](https://www.linkedin.com/in/meteatamel/) **Abstract:** Google Antigravity transforms your regular IDE into an agentic development platform. Beyond basic tab completion, Antigravity offers an intuitive, artifact-based approach to monitoring and providing feedback to agents. By utilizing rules, workflows, and skills, you can fully customize the environment to your team’s best practices, while a dedicated browser subagent handles tasks outside the editor. Last but not least, its Agent Manager can spin up and coordinate multiple parallel agents across various workflows, allowing you to work at a higher level than the code itself. **Presenter:** Mete is a Software Engineer and a Developer Advocate at Google in London. He builds tools, demos, tutorials, and [gives talks](https://atamel.dev/speaker-profile/) to educate and help developers to be successful on Google Cloud. **2nd talk:** "Beyond RCA Speed: Understanding Change in Modern Production Systems" by [Spiros Economakis](https://www.linkedin.com/in/spirosoik/) **Abstract:** In cloud-native environments, deployments, configuration updates, scaling events, and dependency changes continuously reshape system behavior. Incidents rarely arrive without warning, they emerge from subtle interactions and behavioral drift that are difficult to interpret using dashboards, alerts, or post-incident analysis alone. This talk explores why improving root cause speed eventually plateaus, and why many teams are shifting focus toward understanding how change propagates through production systems. **Presenter:** A systems engineer with over 12 years of experience in diverse tech environments and author of "Argo CD in Practice" book. Founder & CEO of [NOFire AI](https://www.nofire.ai/). A Full Context Embedded SRE platform that operates across the entire lifecycle. Before Change, During Failure, After Resolution.

Θέλετε να βελτιώσετε τις ικανότητές σας στην ομιλία μπροστά σε κοινό; Θέλετε να ξεπεράσετε το τρακ της δημόσιας ομιλίας; Ελάτε στην επόμενή μας συνάντηση Toastmasters! Δημιουργούμε όλοι μαζί ένα ανοικτό, φιλικό και ευχάριστο περιβάλλον, στο οποίο εξασκούμε τον δημόσιο λόγο και αξιολογούμε ο ένας τον άλλον. Εφαρμόζουμε το δοκιμασμένο πρόγραμμα των Toastmasters που έχει ιστορία άνω των 100 ετών και εφαρμόζεται στην Ελλάδα από το 2005. Περισσότερες πληροφορίες στο: https://web.facebook.com/profile.php?id=61556529585790 Συναντιόμαστε 2 φορές τον μήνα, την δεύτερη και τέταρτη Πέμπτη κάθε μήνα, από Σεπτέμβριο μέχρι και Ιούλιο (εκτός περιόδων Χριστουγέννων-Πρωτοχρονιάς & Πάσχα). This will be a Greek-speaking meeting. For our English-speaking meetings please see our page at https://www.meetup.com/ethos-pathos-logos-toastmasters-club.

👋 Hello guys and gals, 👋 🎉🎉🎉 Get ready for the after Summer event. 🎉🎉🎉 Doors open at 18:00 18:15 - 18:30 - Gathering and welcome from the organizers. 18:30 - 19:00 - Faris Aziz - The Hidden Battleground, Engineering High-Conversion Payment Experiences 19:00 - 19:30 - Nestor Lopez Federation of Specialists: From Module Federation to AI Orchestration 19:30 - 20:00 - George Karalis - Exploring MCP Apps: Practical Use Cases for the Enterprise [Get your CityJS Athens Blind tickets now before the end of Month as our prices will go Save 50% off.](https://athens.cityjsconf.org) **Faris Aziz - The Hidden Battleground, Engineering High-Conversion Payment Experiences** For most products, the checkout is the most critical and fragile part of the funnel. It’s where traffic turns into revenue, where small UX regressions compound into large financial losses, and where system failures become immediately visible on the balance sheet. This talk explores how to build resilient, high-converting payment experiences as systems, not screens. Drawing on hundreds of A/B experiments run on tens of millions of users and lessons from operating a global subscription platform generating tens of millions in annual recurring revenue, we’ll look at how payment orchestration evolves as products scale across regions, currencies, and providers. We’ll cover how to design checkout UX that converts consistently even for low-frequency products, how to orchestrate multiple gateways without leaking complexity to the user, and how to test and monitor flows where failure tolerance is extremely low. Along the way, I’ll even show a shocking example where adding just two form inputs, implemented correctly, could cost over a million dollars in lost revenue. This is a practical talk from the trenches about why checkout is a hidden battleground, and how resilient payment engineering protects both conversion and growth. **Nestor Lopez //** **Federation of Specialists: From Module Federation to AI Orchestration** The industry has already learned how to break frontend monoliths apart without breaking the product experience. A similar shift is now happening in AI. This talk traces the move from federated UI and composable runtime systems to a federation of AI specialists—and shows why production AI works better when agents have clear roles, controlled tools, workflow hooks, shared collaboration context, and policy boundaries. **George Karalis - Exploring MCP Apps: Practical Use Cases for the Enterprise** What happens when you give an LLM structured access to your company's actual systems, its APIs, data, internal tools? MCP Apps are a new extension to the Model Context Protocol that lets servers return interactive HTML interfaces, dashboards, forms, data explorers, rendered directly inside the conversation. Instead of bouncing users between chat and separate web apps, the UI lives right where the discussion happens, with bidirectional data flow and sandboxed security. We'll look at how tool handlers expose API endpoints to LLMs, how OAuth fits into the picture, and how the data and context flow into a React app rendered inside the conversation. Whether you're considering MCP for your own product or just curious about what generative UI looks like, this talk will give you a practical intro on building AI-native enterprise tools with React. A word from our sponsors. * [EPIGNOSIS](https://www.epignosishq.com/) * [CityJS Conferences](https://cityjsconf.org) 🏆Mini surprise🏆 🍕Pizzas🍕 🦸‍♀️Socializing🦸‍♂️!

It's not a therapy session. It just feels like one...🤷🏻‍♂️ ​Για όσα δεν λέγονται στα τραπέζια... ​ 🎭Ένα διαφορετικό (private) event στο roof top του (Boutique Hotel) Moon & Stars, σε έναν ιδιαίτερο χώρο και με θέα την Ακρόπολη! (Δες φώτο πιο κάτω) 🗓️ Σάββατο 25/4 και ώρα 19:30. ​ 💬 Τι θα γίνει εκεί λοιπόν; Καθόμαστε όλοι μαζί και ξετυλίγουμε ανώνυμα τις σκέψεις μας. Σκέψεις, εξομολογήσεις, ερωτήματα και εσωτερικές ανησυχίες... ​Εκφράζουμε (ανώνυμα) αυτά που μας καίνε, μας φτιάχνουν, μας χαλάνε ή δεν έχουμε πει ποτέ δυνατά ενώ θα θέλαμε. Μιλάμε για ύπαρξη, κοινωνία, φιλοσοφία, σχέσεις, επιλογές, διλήμματα ή και όχι μόνο. (Δε μιλάμε για αθλητικά και πολιτική) ​ 🎲 Τι είναι και πώς λειτουργεί.. ​Μόλις δηλώσεις συμμετοχή, αυτόματα θα λάβεις μέσω email ένα link όπου με όλες τις σχετικές οδηγίες, θα περιέχει μεταξύ άλλων, την φόρμα για να γράψεις και να στείλεις το δικό σου twist ανώνυμα. twist = ένα θέμα προς συζήτηση, ή μία ερώτηση ή μία εξομολόγηση ή μία ιστορία που σε άγγιξε. [Για ακόμη περισσότερες λεπτομέρειες πάτα εδώ να μάθεις!](https://docs.google.com/document/d/1gNDtiTrcUOQQmEWunBj4h8FtbE06tZCb2SWhMIhBfnE/edit?usp=sharing) ​Στο event και όταν τα twists αρχίζουν να "ξετυλίγονται" στο τραπέζι, δεν είσαι υποχρεωμένος/η να πάρεις θέση απαραίτητα, εάν ένα twist τύχει να σου προκαλέσει δυσφορία. Αλλά μπορείς να πας "πάσο" μέχρι δύο φορές... ​Αν θες ακόμη περισσότερες και πιο αναλυτικές διευκρινίσεις σχετικά με την διαδικασία ρώτησέ με ή στείλε μου μήνυμα... ​ 🎯 Στόχος; να περιφρονήσουμε τα συμβατικά small talks και να συνδεθούμε μέσα από απαντήσεις που δεν λέγονται η δίνονται τόσο εύκολα. Να γελάσουμε, να νιώσουμε, να σκεφτούμε, να εκφραστούμε χωρίς λογοκρισία, ή ίσως και να ανακαλύψουμε μεριές του εαυτού μας, που για κάποιο λόγο ήταν κρυμμένες ή και που αποφεύγαμε να δούμε... 🎟️ Σε αυτό το event υπάρχει συμμετοχή 9€ έως 12€ για τον συγκεκριμένο χώρο, που περιλαμβάνει κρασί, ή μπύρα στα 9€, ή ποτό στα 12€. Με προκράτηση τα παραπάνω. Πέρα από αυτά μπορεί κάποιος να παραγγείλει κάτι extra αν θελήσει και ανάλογα την διαθεσιμότητα. [Εδώ είναι η φόρμα για να δηλώσεις συμμετοχή!](https://luma.com/vsbyqndx)

⚠️ **IMPORTANT: You must sign up and buy a ticket here to attend:** [https://groupvibe.com/](https://groupvibe.com/) **Join the Athens 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 brunch spots in your city, together. \* Curated brunch venues with good food and vibe. \* If you hit it off with your brunch 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 is only a placeholder. This meetup is organized by Groupvibe, a small team passionate about helping people form meaningful friendships offline.

**🎉 Our very first NestJS Meetup!** Join us for an after-work technical meetup focused entirely on the **NestJS Framework**. Connect with fellow engineers over drinks and snacks, and dive into practical, architecture-focused sessions designed to level up your backend development. Whether you're exploring the framework or deploying it at scale, this event is built for you. **Talk 1: From Request to Response – Observing Fastify in NestJS** * **Getting Started:** Core concepts, project scaffolding, and leveraging NestJS's modular architecture for scalable applications. * **The Request Lifecycle:** A deep dive into the execution flow. Understand the exact ordering of Middleware, Guards, Interceptors, Pipes, Exception Filters, and Controllers. * **Observability with Interceptors:** Implement cross-cutting concerns (logging, metrics, payload transformation, error tracking) cleanly without polluting business logic. **Talk 2: Clean CQRS with Pipelines** * **CQRS Implementation:** Build clean and maintainable CQRS architectures using pipeline behaviors for commands, queries, and events. * **Centralized Logic:** Encapsulate logging, correlation IDs, authorization, and validation in reusable components. * **The Outcome:** Achieve decoupled event flows, consistent validation, and significantly improved system maintainability. **Event Details** * Two technical deep-dives + Q&A + Networking * Drinks & Snacks provided * Backend Engineers. All NestJS experience levels welcome! Come learn, share your architectural insights, and help grow the local NestJS engineering community. We look forward to seeing you!

**Pickleball + coffee + community 🌱** **Let’s kick things off with pickleball at Park of Roses, then join us at Blackend Coffee to unwind and connect.** **Pickleball 🏓 10:30am-12:30pm** **Blackend Coffee ☕️ 🌯 1-3pm** **All levels welcome!** **Can’t waitt to see everyone!** **📍 Park of Roses** **3901 N High St** **Columbus, OH 43214** **📍Blackend Coffee** **2619 N High St** **Columbus, OH 43202**

**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** GitHub Copilot is powerful, but what if you could scale from a solo AI assistant to an entire team of specialized agents working in parallel? This session introduces Squad: an open-source framework for multi-agent orchestration that lets you define teams of AI agents with specific roles, responsibilities, and expertise. We'll progress from Copilot basics to the Copilot CLI, explore how Agents add autonomy, and see how Instructions and Skills let you customize agent behavior. Then, the climax: a live demo where a Squad team of 3 agents (Lead, Developer, Tester) stands up and builds a working application in real-time, showcasing true multi-agent collaboration. Whether you're new to AI or exploring how to scale your use of Copilot, this session will show you what's possible when agents work as a team. **YouTube Link** TBD

Early-bird coffee and conversation at [Grandview Grind](https://www.facebook.com/profile.php?id=100063534163841)!

AI is changing how art is made. But when does it stop being your work and start being the machine’s? This month we're going to be doing a panel with with digital image, music, and written word artists, talking about at what point, while using AI in the creation process, does the work become not the artist creation? We encourage audience participation during this event that will be moderated by Chris Slee. 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) Sign up also accessible via [Transform Labs Luma](https://luma.com/55umjqta)

We are a real world Martial arts group. \ Called DO JUNG ISHU (the art of fighting) \ Based off of Jeet kune do we just continued where Bruce Lee left off. \ We have been around a while. \ We are donation based. Every week we get together and work technical skills and live pressure testing. \ Almost all of the instructors have been in everything from altercations in the real world to the ring and some still compete in the cage. \ If you want to take your skills up, improve your confidence, gain self defense skills, get in better shape, test yourself or just want to kill some time and possibly get hit a bit come on down. \ We will be located at 3923 N High St, Columbus, OH 43214 inside the whetstone rec center in the auditorium, upstairs in classroom B or outside in the grass between the playground and horseshoe area. our instructors are normally in a black and red art of fighting shirt \ if you can not find us call or text me at 6143570295 Saturday 1pm Wednesday 5:30pm From Age 16 and up. attendees under the age of 18 must have a guardian with them. \ \ You must have a free leisure card for the rec center and must be registered for our class specifically .\ Wear workout clothing \ Bring a MOUTHPIECE! \ WE HAVE GLOVES. \ Hope to see you soon :-).\ We are run off of donations. \ let me know if you have any questions :)

Private Group. Closed to the Public Knowing ourselves and understanding our abilities is the first step toward wielding our gifts with control and accuracy. In subsequent classes we will verify and hone our talents with activities and discussion. These are hands-on workshops and participation is expected. The goal of our series will be to develop expertise in areas of particular interest such as mediumship, channeling, divination, healing and, etc.. Our ultimate directions will be determined by class members as we evolve. I look forward to sharing and discovering with you. - Cynthia

Join us for pizza and conversation at Stone Bar & Kitchen 🍕 Good slices, good stories, and plenty of laughs around the table. Come hungry, bring your best conversation, and let’s enjoy a relaxed evening with great company. Extra cheese and extra chatter encouraged! 😄