Apache

Hello everyone! We're excited to announce **Vienna's first official** **Codex Community Meetup**, co-hosted with **Vienna AI Engineering** on Monday, April 27! For this meetup we are returning to **Greentube** who will generously host us at their HQ on **Wiedner Hauptstraße**. Catch up on the latest Codex updates, see live demos, and learn best practices from power users. Hear directly from the top teams of the [Codex Hackathon Vienna](https://luma.com/18ivobmb?tk=RIkbHV) about what they built, see live demos of their projects, and learn best practices from power users of Codex. Whether you’re already using Codex or simply curious about coding agents, this is your chance to connect with peers and explore how AI is transforming the way we build software. ⚠️ **Important: [The official registration is on Luma only](https://luma.com/vienna-ai-engineering) and spots are limited there to 150.** In order to avoid double-bookings, we'll restrict the RSVPs here only to the Organizer Team. 👉 Everybody else please **[register on Luma](https://luma.com/vienna-ai-engineering)** The venue check-in will use the Luma guestlist, so please make sure you're registered there. FYI, since some of our partners like OpenAI use Luma to coordinate events worldwide, we must also use it when we make branded events like this one. So in order to make sure you are directly informed about this type of events, make sure you **[subscribe to our Luma calendar](https://luma.com/vienna-ai-engineering)**. The Meetup platform has been having a lot of hiccups in recent years, and if Luma turns out to be better, we might even switch to it as our main platform permanently. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Schedule** 18:00 - Get together with food and beverages 18:30 - Welcome & Intro 18:40 - Presentations from the top hackathon teams 20:30 - More drinks & networking. Join us on April 27 for an evening of demos, insights, and networking at the **Greentube HQ**! \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- This event is sponsored by **Greentube GmbH**

-Outdoor Functional Training for All Fitness Levels- Join us as we combine healthy, balanced movement with fun, gamified ideas to give you our unique FUNctional training! And in case that doesn’t really tell you what to expect, just think short intervals of exercise combined together in a playful and interactive way to help you strengthen your body in a sustainable way while allowing you to meet new people (and often even forget how hard you’re working out). As a reminder for those nervous about their fitness level: Everything we do, we do with all fitness levels in mind; so the exercises are always adjustable to your level and you’re always strongly encouraged to take it at your own pace - I mean, we’re not called My Pace for nothing! How to find us: We meet and train behind the calisthenics workout station on the Zirkuswiese of the Prater. Here a link to the location on Google maps: https://maps.app.goo.gl/QdRPEaYTiavZbmVW7 Cost: In the interest of inclusivity, we've decided to make our sessions donations based here, so you're invited to pay what you can afford. If that actually makes you more uncomfortable and doesn't make it easier to come, know that we've received donations from €2 to €20 and they all made us very happy, because our primary goal is to get people moving and to show them it can be fun all in all. The money is secondary. One other thing that’s useful to know: - In the case of bad weather, we do have a back-up location that will protect us from the rain. Should we need to move, we will change the location of this event here. Please feel free to check back here before any event where you suspect bad weather or, even better, simply get in touch with us! We’re available via WhatsApp message or email. --- If you'd like to know more about My Pace, feel free to visit our website at https://www.mypace.at

Herzlich Willkommen zu unserem kostenlosen Meditations Kurs! Einstieg ist jederzeit möglich, geeignet für Anfänger als auch Fortgeschrittene. Hier werden dir Grundlagen und Wissen von Sahaja Yoga-Meditation vorgestellt: speziell über Kundalini, Energiezentren, subtile Kanäle in und einfache Techniken, die unterstützend auf unser inneres Wachstum wirken und uns ins Gleichgewicht bringen. Wir lernen wie wir in unserem täglichen Leben in Balance kommen und in einem Zustand der Stille Kraft schöpfen können. Ein zentraler Punkt ist die spürbare Stille in jedem von uns. Sie ist der Moment im Hier und Jetzt, der uns Inspiration, Freude und vieles mehr schenkt. In diesem Zustand zu verweilen bedeutet Meditation - und das ist die Quintessenz für inneres Wachstum und Weiterentwicklung. Wir freuen uns schon auf dich!

Argentine tango has nothing to do with the tango you've seen on TV. No dramatic dips. No fixed choreography to memorize. No performance. Real tango is a conversation. Two people, close together, listening to each other through touch and weight and breath. The leader proposes. The follower responds. The dance emerges from that - improvised, alive, completely in the present moment. It is one of the most direct ways I know to practice presence. In this introductory evening, you'll learn the basic structure of the embrace and a few simple steps. More importantly, you'll begin to feel what tango is actually about: connection. To your own body first, then to another person. You don't need a partner. You don't need dance experience. You need comfortable shoes with a smooth sole and an open mind. I've been dancing tango for years, and I come to it from the same place I come to everything else I teach: the body knows things the mind doesn't. Tango is one of the ways we learn to trust that. Partners are rotated during class so you practice with everyone. Teachers and organizers are Sara & Nemanja, competitive dancers and teachers, who discovered their love for tango, and now they want to share it! For Students under 28, there is a discount.

**What is Innate Dance?** Innate Dance is a joyful approach to movement, which invites deeper embodiment and self-connection through butoh inspired movement, Noguchi Taiso exercises, the Seki Method, somatic attention and imagination. We shake it out, breaking up stuck energy held in the body, and explore new movement possibilities from a place of alignment and sensitivity. Thanks to our open awareness we can be surprised by lesser-known parts of ourselves and come to appreciate our innate wisdom in movement. Through exercises, explorations and improvisations we build trust in the body that knows how it would like to move and express itself, and when we follow our innate dance, it just feels good! There is also time and space to dance freely, to enjoy the music in your body and to let go! Ultimately, it's about feeling more 'in' our body and grounding joy. **When? Where? How much?** **Mondays 19:30-21:00** in Studio 2, Tanz\*Hotel, Zirkusgasse 35, 1020 Wien Try out € 16\,\- \| One class drop\-in € 21\,\- \| Student € 10\,\- \| 5 x class pass €95\,\- \| 1 x class pass for rest of semester € 224\,\- \(or €16/class\) **Who teaches the course?** Jess is a dancer and psychotherapist (humanistic and integrative), who loves shaping classes that offer the space to explore the many facets of being human. Sometimes this learning involves physically embodying non-humans like trees, fish and wind, so we can get out of our limited-human-thinking-mind and into the bigger wisdom available through imagination and our body. At other times it's about dancing textures, sensations or taking on the energy of parts of ourselves so we can know them better. Jess has danced all her life and has been exploring butoh dance for the past eleven years alongside her psychotherapeutic practice. She is co-author of *The Seki Method - Basics* (now available to buy online via website), is a Seki Method Facilitator, and was a 2024 student at the Im_Flieger Schule researching dance and healing.

Join our outdoor yoga class in Vienna for a relaxing park yoga session designed for beginners and experienced yogis. Please read the complete event description ✨ What to Expect • Breath-led Yoga Flow • Gentle stretching and mindful movement • Relaxing outdoor atmosphere • Friendly and welcoming community 🧘 Level Beginner to intermediate 🎒 What to Bring • Yoga mat • Comfortable clothes • Water 💛 Energy Exchange Pay what you feel right (suggested between €10-€20) **Join us for instant updates:** **https://chat.whatsapp.com/JbCZPIUQrCv6lhd00M0oXI** 📍 **Location**: Auer-Welsbach Park – near the U4 Grünbergasse exit We will be at this location https://maps.app.goo.gl/YfwydU7UN9YiWZWE6 More details: Exit the U4 at Grünbergasse. When you come out of the station, turn left and cross the street. You’ll see the park entrance directly ahead. Walk about 100 meters inside the park, and you’ll find us on the right side on the grass

Agenda (preliminary) 18:00 doors Open 18:20 welcome, doors closing soon 18:30 **Centralising and automating your API contracts using a schema registry** 19:30 Networking 20:00 **OpenJDK, the JCP and JUGs: contributing to Java to become a beyond senior expert** 21:00 networking Talk 1: **Centralising and automating your API contracts using a schema registry** No matter if REST or message-based, your APIs need to change. Describing the API using OpenAPI or some other specification language is good. But how to make sure all affected parties have the same version of the API spec and that spec changes don't happen before all API users are ready? Let's discover how schema registries can bring order and automation in this. We'll take a look at how you can use them with Java and why the choice of the schema specification language matters. **About Marián Varga** Marián Varga has worked with Java for more than 20 years. He wrote the book Mastering RESTful Web Services with Java and keeps helping software development projects get their integrations right. Talk 2: **OpenJDK, the JCP and JUGs: contributing to Java to become a beyond senior expert** The Java technology evolves through 3 main pillars: open source, standards and community participation. This interactive presentation will show what happens behind the scenes in those processes, how you can participate, and practical ways you can use Java's evolution to build technical expertise, and advance your career beyond the senior level. In this session you will: \- Understand the secret Java Champions use to build technical expertise \- How to think like Java's main architect\, and build impact in your project and beyond \- How to use Java's pillars to build a growth spiral for your own career **About Bruno Souza** Since 1995, [Bruno Souza](https://www.linkedin.com/in/brjavaman/) has been helping Java developers advance their careers and work on exciting projects. A recognized Java Evangelist and Java Champion, as well as a board member of the Java Community Process, Bruno founded and leads SouJava, the Brazilian Java Users Society. In his book, “Developer Career Masterplan,” Bruno shares insights on career development for senior developers, topics he further explores in his Code4.life project.

Welcome to the Vienna Beach Volleyball Club! 🌞🏖️ This group is for intermediate to advanced players who want to enjoy exciting, fast-paced games with others at a similar level. If you already know the rules, can serve, pass, set, and spike with confidence, you’ll fit right in. We meet regularly at courts in Vienna (mostly in the 22nd district), and our games are all about keeping the rallies going, improving our skills, and having fun while staying active. 👉 If you’re passionate about beach volleyball and ready for some challenging matches in a great community, join us and let’s play!

OpenClaw Deep Dive into the Future of Autonomous Business Agents 17:30 – 23:30 \| Fiskaly GmbH\, Mariahilfer Strasse 36\, 1070 Wien\, Austria ⚠️ **Please Note: This is a free event, made possible by neob.ai. Seats are strictly limited and seating cannot be guaranteed. Admission is on a First Come, First Served basis. We strongly recommend arriving early to secure your spot.** SPEAKERS AND KEY TOPICS Andrew Demczuk, MSc — OpenClaw Core Maintainer Don't hack me, bro Ed Prinz — Founder & CEO, neob.ai Web4: The Revolution of the New Internet Based on Agents More speakers to be announced. ABOUT OPENCLAW Forget simple Q&A. We are entering the era of proactive AI. OpenClaw (formerly ClawdBot) is an open source framework that closes the gap between generative AI and real operational execution. AI agents operate inside everyday messengers such as Telegram or WhatsApp and autonomously perform complex business workflows. This event provides a deep dive into the architecture, capabilities, risks, and future implications of agentic systems that will fundamentally reshape how companies operate. WHY OPENCLAW OpenClaw represents a major milestone. For the first time, AI truly acts as a proactive assistant. It does not just respond to commands. It informs you, prepares briefings, and executes tasks autonomously within familiar interfaces such as WhatsApp or Telegram. This marks the transition from passive tools to operational AI agents.

Welcome to the Vienna Beach Volleyball Club! 🌞🏖️ This group is for intermediate to advanced players who want to enjoy exciting, fast-paced games with others at a similar level. If you already know the rules, can serve, pass, set, and spike with confidence, you’ll fit right in. We meet regularly at courts in Vienna (mostly in the 22nd district), and our games are all about keeping the rallies going, improving our skills, and having fun while staying active. 👉 If you’re passionate about beach volleyball and ready for some challenging matches in a great community, join us and let’s play!

This event is for people who join the event in person at SQUER (https://www.squer.io/). If you join the event remotely, please RSVP here: [https://www.meetup.com/dotnet-austria/events/313929458](https://www.meetup.com/dotnet-austria/events/313929458) This meetup is organized by DotNetDevs.at (https://dotnetdevs.at/). Abstract So you want to build an event-driven system and wonder how to put your data in motion? Well, Kafka is one of the answers! With its rich ecosystem, it will help you to achieve this goal. Through patterns and examples, we will look into building blocks of Kafka, be it records, partitions, (de)serialization, schema registry and kafka streams, to libraries and frameworks that are existing for it in the .NET ecosystem. This session is designed for .NET developers, team leads and architects who want to learn how to use Kafka in their applications. By the end of this session, you will have a solid understanding of the basic concepts of Kafka and how to use them in your .NET applications. Shahab is a seasoned software engineer with more than 20 years of experience, specializing in software architecture and event driven systems. He thrives on challenges and enjoys mentoring others. With excellent communication skills, he fosters autonomous teamwork and emphasizes respect within the team. Embracing change is his motto, advocating for collaborative environments where everyone's contributions are valued. Location, Food & Drinks are sponsored by SQUER. Timetable: \- 18:00: Door opens at SQUER \- 18:15: Intro \- 18:20: Talk starts \- 19:30: Food & Drinks \- 21:00: End Recordings will be available afterward at https://go.dotnetdevs.at/recordings This meetup is organized by DotNetDevs.at (https://dotnetdevs.at/). DotNetDevs.at is sponsored by: \- RUBICON IT GmbH \(https://www\.rubicon\.eu/rubicon/\) \- JetBrains \(https://jetbrains\.com\)

-Outdoor Functional Training for All Fitness Levels- Join us as we combine healthy, balanced movement with fun, gamified ideas to give you our unique FUNctional training! And in case that doesn’t really tell you what to expect, just think short intervals of exercise combined together in a playful and interactive way to help you strengthen your body in a sustainable way while allowing you to meet new people (and often even forget how hard you’re working out). As a reminder for those nervous about their fitness level: Everything we do, we do with all fitness levels in mind; so the exercises are always adjustable to your level and you’re always strongly encouraged to take it at your own pace - I mean, we’re not called My Pace for nothing! How to find us: We meet and train behind the calisthenics workout station on the Zirkuswiese of the Prater. Here a link to the location on Google maps: https://maps.app.goo.gl/QdRPEaYTiavZbmVW7 Cost: In the interest of inclusivity, we've decided to make our sessions donations based here, so you're invited to pay what you can afford. If that actually makes you more uncomfortable and doesn't make it easier to come, know that we've received donations from €2 to €20 and they all made us very happy, because our primary goal is to get people moving and to show them it can be fun all in all. The money is secondary. One other thing that’s useful to know: - In the case of bad weather, we do have a back-up location that will protect us from the rain. Should we need to move, we will change the location of this event here. Please feel free to check back here before any event where you suspect bad weather or, even better, simply get in touch with us! We’re available via WhatsApp message or email. --- If you'd like to know more about My Pace, feel free to visit our website at https://www.mypace.at

The second **PostgreSQL Meetup in Vienna** is coming up! Exciting talks and networking opportunities around PostgreSQL are waiting for you. Meet fellow Vienna-based and international PostgreSQL enthusiasts at this meetup and take the opportunity to connect locally and exchange ideas. **When:** April 28, 2026 — 6:30 PM to 10:00 PM **Where:** DBConcepts, Ares Tower, Donau-City-Straße 11, 1220 Wien. **Preliminary Agenda:** 6:30–7:00 PM — Doors open & registration, networking & Pizza 7:00–7:15 PM — Welcome & Sponsor introduction: DBConcepts **7:15–7:45 PM — Talk 1:** PG monitoring in Cloud native landscape (by Sahil Sharma) 7:45–8:00 PM — Break **8:00–8:35 PM — Talk 2:** The PostgresChecker: Hunting Use-after-free Bugs in PostgreSQL (by Bernd Reiß) 8:35–8:50 PM — Break 8:50–9:25 PM —Lightning Talks (TBD) 9:25–9:30 PM — Closing 9:30–10:00 PM — Networking & Snacks Snacks and drinks will be provided. A big thank you to [DBConcepts](https://www.dbconcepts.com/), our main sponsor, for hosting us and providing food and drinks! 🚨 **Attention: Limited spots available!** 🚨 \*\*\*\*\*\*\* SESSION DETAILS Talk 1 by **[Sahil Sharma](https://sahil.work)** **Title:** PG monitoring in Cloud native landscape **Abstract:** In this technical session, we will build a complete, proactive monitoring solution from scratch. Using CloudNativePG (CNPG) as our orchestrator and a local Kubernetes environment, we will walk through the architecture of a high-fidelity observability stack. What we will build and demonstrate: * Deploying CNPG: Setting up a production-ready Postgres cluster in K8s with native monitoring enabled. * The LGTM Integration: Connecting Prometheus for metrics, Loki for logs, and Grafana for a "single pane of glass" view. * Log Parsing: Using the OpenTelemetry Collector to collect Postgres logs. * Closing the Loop: Configuring Alertmanager to send real-time Slack notifications for slow queries or infrastructure failures occur. Attendees will leave this session with a practical blueprint and the code necessary to turn their database from a silent dependency into a transparent, observable, and proactive part of their infrastructure. Talk 2 by **[Bernd Reiß](https://www.linkedin.com/in/bernd-rei%C3%9F-a060ab43/)** **Title:** The PostgresChecker: Hunting Use-after-free Bugs in PostgreSQL **Abstract:** This talk presents the PostgresChecker: A static analysis tool for finding use-after-free bugs in PostgreSQL. It discusses a novel approach for identifying memory-managing functions in the PostgreSQL source code and how they were used to implement a static checker.

Join other experienced and aspiring agile coaches and professionals to: * develop and practice your coaching skills in a peer-to-peer environment * share current successes and challenges in your work environment and get support from each other * learn from each other, build better relationships and experiment with new ideas ***NOTE:*** Pre-registration is required for this event. **Please arrive 10 minutes early** to check in at the security desk.

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/cbus-hug-2026/

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

Salsamante Dance Academy will be at Swerve Every Tuesday Night to share the Rhythm & Energy of Bachata & Salsa. These are Beginner Level lessons to get you comfortable and understand the two dances. Spread the Good News to all. Swerve Dance & Fitness Complex 640 Lakeview Plaza Blvd A, Worthington, OH 43085 Bachata 7pm-8pm Salsa 8pm-9pm $15 - One Lesson $20 - Both Lessons

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

Have a small business? Ever wish you could just ask some questions around how to grow your business, get more customers or just know what the freak you are doing with sales? Now is your chance!! Every month we are hosting the "Ask an Expert" at the Columbus Metro Library, Main campus. I will be there to answer your Sales related questions. Drop-in for sales coaching designed to help small business owners, entrepreneurs, and sales professionals sharpen their sales approach. Whether you have questions on how to refine your pitch, are looking to close deals more quickly, or are working on building better client relationships, Smashing Your Sales Goals Coaches are here to help. Drop-in to get expert insights, actionable strategies and real-time solutions to grow your business and generate higher profits. Drop-In Sales Coaching is FREE + OPEN to the public. No appointment needed. First come, first served. EPIC Learning created. Accelerate Columbus supported.

ASH is Atheists, Skeptics and Humanists of First Unitarian Universalists of Columbus Ohio TBD Snacks are usually available, and you are welcome to bringing something to share!