Rich Internet Applications

Register: [https://luma.com/rjekky53](https://luma.com/rjekky53) Join us for a **hands-on introduction to Generative AI with Neo4j** with CODE University. ​In this **instructor-led workshop**, participants will explore how graph databases can improve GenAI applications and reduce common challenges such as hallucinations. You’ll learn key concepts including **Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), GraphRAG, vector search, knowledge graphs, and AI agents**. ​The workshop follows a **mixed format** with theoretical lessons combined with practical exercises while instructors are available to support and answer questions. ​During the session, you will learn how to: * ​Use **Neo4j to enhance GenAI applications** * ​Build **knowledge graphs from unstructured data** * ​Use **vector embeddings for similarity search** * ​Create **GraphRAG retrievers using Python** * ​Build a **conversational AI agent using Neo4j and LangChain**

**Overview:** Experience the richness of “warm” stories across different areas of life, listen, share, and discover, plus a book launch with free copies. We warmly invite you to a gathering that offers something beyond an ordinary conversation. It is an experience where you can listen to a variety of stories and, if you feel ready, share your own. **Warm Data Lab** is a space to explore the richness of “warm” stories across different areas of life. It is a meeting that is partly with others, partly with yourself, and partly with something beyond words. **Flow:** You will be welcomed with a drink and a small snack, followed by a gentle introduction to the Warm Data Lab format, a structure that allows plenty of space to follow what feels important to you. After about an hour of Lab, we will invite you to stay for a more informal time together. There will be space for chatting, and we will also present a newly published book by us, a compilation of methods for working with people *in motion*: "**More than a method**". Copies will be available free of charge for participants. **Languages:** English and German **Doors Open:** 17:40 **Organiser:** **KulturNest e.V.** **www.kulturnest.org**

👋 Hallo und 💜-lich Willkommen to the Elixir Berlin Meetup. Due to the easter holidays, we moved to the third Thursday of the April for some sweet Elixir. If you're new to the community the best way to introduce yourself is [to submit a talk](https://github.com/elixir-berlin/planning/issues/new?template=talk.yml) ⏰ Schedule 18:45: Doors open 19:05: Welcome & Announcements 19:15: 🗣 Surveyor - Extracting Specifications from Legacy Software with Elixir by Chris 19:45: 🍺 break 🍵🧃 20:15: 🗣 Talk about the SSH OTP application by Cara 20:45: ⚡️ Lightning talks and Socializing 🪩 We want to encourage members of the Elixir community to share what they're working on. If you want to give a lightning talk at this Meetup, contact one of the organizers with a short description of your talk - or [submit a talk](https://github.com/elixir-berlin/planning/issues/new?template=talk.yml) See you all there 💜💜💜

**Beer, Pizza and IoT Meetup (Siemens Digital Twins Special)** AGENDA 18:30-19:00: Pizza and Beer (other drinks available) 19:00-20:00: Talk by Kazeem.Oladipupo and Ege Korkan on "Why simplifying IoT interoperability makes connected Digital Twins a reality?” 20:00-21:00: Networking with potentially more beer Look forward to seeing you all there. Due to limited capacity, we reserve the right to restrict admission. Pizza, beer and seats first come first serve! :)

**Rust Berlin on location 🏳️‍🌈** is a new, informal in-person Rust meetup group in Berlin. We are a interactive meetup format interested in mob coding, deep diving and problem solving together. We build toy projects, share experiences, discuss technology and learn new cool stuff. And you are welcome to join! No matter if you are writing Rust production code every day, if you already contribute to Open Source projects or want to start doing so, if you use Rust in hobby projects or if you are just curious what the hype and buzz is all about, you are very welcome! To coordinate and plan activities, please join our **[Rust Berlin on location 🏳️‍🌈](https://rust-berlin.zulipchat.com/join/gap4pdbz7xsquliiz7tgcyuk/)**[ Zulip chat](https://rust-berlin.zulipchat.com/join/gap4pdbz7xsquliiz7tgcyuk/)! **Planned programme** Being an informal meetup, we are open to anything between just meet and talk, explore nerd snipes and rabbit holes, mob code together, plan and build fun projects, tinker with electronics, and presentations with Q&A. With the [introduction](https://berline.rs/2026/04/01/berlin-talks.html) of the new [Rust Berlin Talks](https://berline.rs/about#rust-berlin-talks) meetup series, **[Rust Berlin on location 🏳️‍🌈](https://berline.rs/about#rust-berlin-on-location)** strengthens its focus on social community experience, the exchange of knowledge, ideas and perspectives, and the joy of spontaneity. This time, we have the following topics lined up: * Tobias has been working on a ***project wizard*** and would like to receive some feedback from the group. * Crop is going to introduce the topic of ***atomics***, then hold a discussion space for answering questions and sharing experiences. * Raf finally would like to introduce ***test-driven development*** with a small mob coding exercise. If someone brings other cool stuff, questions or problems, then let us dedicate the second half of the meetup time to that! Anyone is invited to bring their projects and questions, show something, ask something, or explore a topic together. The best conversations and deepest rabbit holes can emerge out of seemingly nowhere. **Projected upcoming meetups** We schedule regular meetups on Thursday evening every four weeks, using the slot between the Berlin Rust Hack and Learn online meetup (every two weeks), and the Rust Nuremberg online meetup (every four weeks). 16 April 2026 is our thirteenth meeting. Our next projected meetings are going to occur on the following dates: * 14 May 2026 (tentative, public holiday) * 11 Jun 2026 * 9 Jul 2026 * 6 Aug 2026 * 3 Sep 2026 * 1 Oct 2026 **Location** Our meetup location is the new shared office community space of Ferrous Systems, Slint and KDAB in Berlin Mitte, for up to 25 people. We are expecting to use this space as our default location for the time being, with the IN-Berlin e.V. community space in Moabit as backup. Regardless, as our group might eventually outgrow the locations' size limit, we are low-key looking for bigger locations. If you know a fitting location, then please let us know in our Signal group! Another workable way might be to split the meetup into smaller, interest-specific sub-groups instead. As the no-show rate on Meetup.com is rather high, consider showing up even if you are on the waiting list. We can't promise that there is any space left, but usually there is. So give it a shot! **Accessibility** The location has an elevator and a wheelchair accessible bathroom. Please note that the bathroom is two floors down from the meetup space. On our quest for a bigger location, we are going to pay special attention to accessibility. **Community** We aim to create a safe place for everyone and adhere to the [Berlin Code of Conduct](https://berlincodeofconduct.org/). Inclusivity is very important to us. If you are curious about Rust, but unsure if you are welcome to join: Yes, yes you are. Please come to the meetup! If you have special needs, please get in contact, we will try to accommodate you as best we can. We are part of [https://berline.rs/](https://berline.rs/) and like to hang out in the **[Rust Berlin on location 🏳️‍🌈](https://rust-berlin.zulipchat.com/join/gap4pdbz7xsquliiz7tgcyuk/)**[ Zulip chat](https://rust-berlin.zulipchat.com/join/gap4pdbz7xsquliiz7tgcyuk/). You are very welcome to join!

PLEASE NOTE: to attend to this meetup please RSVP directly at the [flight levels flight club event](https://www.meetup.com/flight-levels-flight-club-berlin/events/313519893/?utm_medium=referral&utm_campaign=share-btn_savedevents_share_modal&utm_source=link&utm_version=v2&member_id=206720451) **Flight Levels® Flight Club #11 - This time, we are doing something different!** For this **Flight Club** we’re playing a **hands-on flow game** where dice represent capacity, work moves across a simple board, and the system throws in the occasional surprise just to keep you on your toes. We’ll spend about 2 hours playing in small teams, then do a quick chat about what we noticed, and how it relates to our working environment. No prior knowledge needed and everyone is welcome. We will... * Play in multiple small teams * Roll dice, move work and see what happens * Capture data and metrics for analysis * Have some fun, and learn something * Quick debrief, and * Some networking opportunities Snacks and refreshments will also be available :-) The evening will look something like this... 17:30 — Arrival and socialising 18:00 — Start and introductions 18:15 — Simulation rules and constraints 18:30 — Simulation begins 20:30 — Debrief 20:45 — Wrap up 21:00 — Finish **We will start on time, so please be punctual.** Looking forward to seeing you on Thursday April 16th.

​GDG Berlin × Arbio ​ 🌍 ABOUT THIS EVENT ​ Join us for a Berlin AI Builders Meetup, organized by GDG Berlin and hosted by Arbio. ​This evening brings together engineers, builders, founders, and AI practitioners for practical, real-world discussions around AI, data, and modern software systems. ​Whether you’re building AI-powered products, working with cloud infrastructure, or exploring real-world AI use cases, expect insightful talks, open conversations, and strong community energy. ​ 📍 EVENT DETAILS ​• Location: Arbio Office — Greifswalderstraße 212, 10405 Berlin • Date: Thursday, April 16 • Time: 18:30 – 22:00 (GMT+1) ​ ⚠️ CAPACITY ​• \~70 seated spots available • Additional standing spots available • Entry is first come, first served — arriving early is recommended ​ 🎤 AGENDA ​18:30 – Doors Open Grab a drink, meet fellow builders, and get settled. ​19:00 – Talk 1 Building AI Designing context-first AI systems • Arnon Cavaeiro — Head of product @ Arbio ​🍕 Break — 15 min ​20:00 – Talk 2 Building AI Agents on GCP: Practical Lessons from AI Engineering • Nur Rafizade — AI Solution Engineer @ Deloitte ​🍕 Break — 15 min ​21:00 – Talk 3 AI in Cybersecurity • Hamza M'hirsi — Founder @ CyberDebunk ​🕺 Networking from 21:45 until 22:00 💃 ​ 🍕🍻 FOOD & DRINKS Food and drinks will be provided. ​ 🙏 THANKS & CREDITS A big thank you to Arbio for hosting and supporting the Berlin developer community. ​And a huge thanks to everyone in the community who helps make these events possible 💙

Fuelled by our pre-workout Espresso we go on a scenic run to Treptower Park. Whether you're training for a marathon or just decided to give running a shot: with us, you are welcome. We offer 5k or 10k routes, both with plenty of talk and good vibes all the way. > Meet us @ 9:20 AM @ Green Wall Coffee Lichtenberg > Get your pre-workout Espresso for only €1

Let's read together on another Sunday morning. Agenda: 10:30-11:00 Arrival, ordering drinks, getting to know each other 11:00-12:00 Reading together 12:00-13:00 Share reading experience There is no books assigned. Just bring whatever you are reading for now. Please sign up only when you can join the event. Hope you will enjoy it there!

**⚠️ IMPORTANT: REGISTRATION MANDATORY ⚠️** Registration on **Luma** is **REQUIRED** to attend this event. **Link: [https://luma.com/nklicoct](https://luma.com/nklicoct)** Your registration is subject to host approval. You must complete the registration process on lu.ma to receive the full event location details and confirmation of your attendance. **Please note: Without approved registration on Luma, you will NOT be able to access the event location or attend.** We are excited to invite you to an interactive workshop hosted by LISS x Semrush and led by **Saeid Nobakht, Lead AI Engineer at Semrush**, focused on bringing agentic AI into production. The session will last around 2 hours, followed by a networking session with Semrush and fellow AI enthusiasts (and free pizza 🍴😋🍕!). Bring your laptop! And please arrive a bit early to get settled :) **Schedule** * 17:45 - Doors Open * 18:00 - Start of Workshop * 20:00 - Networking + Catering **Abstract** Building reliable agentic systems requires more than evaluating individual LLM outputs — it demands a systems-level approach to testing, observability, and operations. This session covers how to design evaluation frameworks for multi-step, tool-using agents; how to instrument and trace agent decisions for debugging and audit; and how to recognize and respond to common production failure modes. **Who is this for?** This workshop is open to everyone curious about building with agentic AI. Technical background and Python knowledge recommended. **⚡ FINAL REMINDER ⚡** **You MUST register and be approved on Luma to attend. The event location will only be visible after your registration is confirmed by the host. Link: [https://luma.com/nklicoct](https://luma.com/nklicoct)** *** About BLISS: Berlin's AI community connecting like-minded individuals passionate about machine learning and data science. BLISS Workshops connect students and young professionals with industry partners. Website: [https://bliss.berlin](https://bliss.berlin) YouTube: https://www.youtube.com/@bliss.ev.berlin

**⭐ NOTE THE NEW LOCATION! ⭐** The Creative Code Jam is a monthly gathering of artists, makers, designers, illustrators, coders, musicians, performers, learners and anyone interested in the use of computing skills for artistic expression. The event is free and open to all, regardless of age, origin, gender or experience. The jam is an opportunity to meet likeminded people and get creative together in a relaxed and safe environment. Beginners and first-timers should feel especially welcome! WHAT SHOULD I EXPECT? **Bring a laptop** and/or anything you’d like to work on, whether it’s a personal project, an experiment, or a skill you want to learn. You can come with friends or meet new people here. There’s no set agenda: some people code, some sketch ideas, some collaborate, and others just chat and get inspired. SCHEDULE Doors open at noon, then we’ll have quick introductions so everyone can share what they’re planning to work on. Note: arriving on time is the best way to hear what others are up to ;) Around 6 pm, we gather to share what we’ve worked on during the day. BEGINNERS WELCOME! If you’re new to creative coding, we'll be happy to help you get started, and you can find beginner-friendly resources at [creativecode.berlin/learn](http://creativecode.berlin/learn). THIS IS YOUR SPACE We do our best to create a welcoming environment for all people regardless of race, ethnicity, color, religion, gender identity, sexual orientation, national origin, age, disability, or genetics. People from group generally underrepresented in open-source, art, and technology fields are warmly encouraged to come by. And if you know someone who might enjoy this meetup but isn’t sure it’s for them, let them know they’ll be welcome! SAFE SPACE POLICY We support the Berlin Code of Conduct: https://berlincodeofconduct.org/ Please make sure you agree with its content. ABOUT MotionLab.Berlin MotionLab.Berlin is Germany’s premier Innovation Hub & Makerspace – an ecosystem for Hardtech, art, creativity, and entrepreneurship. They are an international community with access to state-of-the-art machinery, prototyping machines, coworking spaces, offices, and production facilities. More info: https://motionlab.berlin/ ACCESSIBILITY MotionLab is located on the ground floor, with bathrooms on that same level, although unfortunately they are too small for wheelchairs. FOOD MotionLab has drinks and snacks for sale. Bio food can be found on LPG at Bouchéstr (\~200m). Their cantine has vegan, vegetarian and other food options until 8pm. DO I NEED TO SPEAK GERMAN? We speak mostly English so international guests are more than welcome! Our team also speaks French, Turkish, Italian, Spanish, Dutch, Finnish and German... though language availability may vary depending on which organizers are present :) CONTACT Raphaël de Courville team@creativecode.berlin +49 176 700 70572 or get in touch via [creativecode.berlin](https://creativecode.berlin/)

**Flight Levels® Flight Club #11 - This time, we are doing something different!** For this **Flight Club** we’re playing a **hands-on flow game** where dice represent capacity, work moves across a simple board, and the system throws in the occasional surprise just to keep you on your toes. We’ll spend about 2 hours playing in small teams, then do a quick chat about what we noticed, and how it relates to our working environment. No prior knowledge needed and everyone is welcome. We will... * Play in multiple small teams * Roll dice, move work and see what happens * Capture data and metrics for analysis * Have some fun, and learn something * Quick debrief, and * Some networking opportunities Snacks and refreshments will also be available :-) The evening will look something like this... 17:30 — Arrival and socialising 18:00 — Start and introductions 18:15 — Simulation rules and constraints 18:30 — Simulation begins 20:30 — Debrief 20:45 — Wrap up 21:00 — Finish **We will start on time, so please be punctual.** Looking forward to seeing you on Thursday April 16th.

Ein Toast auf die Rhetorik. Wie wir aus dem Stegreif begeistern. Mit Tipps und Tricks für spontanes Reden. Allgemeine Infos Sich wortgewandter ausdrücken, bei einer Präsenation glänzen oder mit einer Rede auf der nächsten Feier alle vom Hocker hauen - all das und noch viel mehr können Sie hier lernen. Der Rhetorik-Club Mut und Rede Toastmasters Neukölln stellt sich vor und lädt Sie ein, Ihre eigenen Redekünste auf die Probe zu stellen. Weitere Infos Keine Vorkenntnisse erforderlich.

An interactive meetup for anyone curious about prompt engineering and how to get better results from AI tools like ChatGPT, Claude, and Midjourney.

**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

Over 50 CINCO de MAYO HAPPY HOUR - FLIGHTS N TACOS!!! Join us for a fun and relaxed Over 50 Happy Hour on Friday, May 1st from 5:00 PM – 8:00 PM at Giant Eagle Grandview Yard Event Center! (upper level) **Plenty of free parking**. The event center is huge! Pics are in the comments. Over 50 CINCO de MAYO HAPPY HOUR!! – Flights n Tacos Let’s join together for a fiesta! (Invite friends - we have lots of room!) • Taco Bar • Margarita and Beer tasting • Complementary chips and salsa • Margs/cocktails at the bar for purchase • Festive Band/Music Margaritas/Mexican Beer Tasting + Taco Bar: Optional - For $15.00 per person you can also get 4 Margarita or beer) Get ready for a fun evening filled with live music, great conversation, and a lively crowd of 50+ singles and friends looking to mix, mingle, and enjoy the night. Whether you come solo or with friends, you’ll quickly feel the welcoming, social vibe. Enjoy happy hour at the bar until 6 PM, or take part in the special Cinco de Mayo experience featuring margarita flights and delicious Mexican bites. It’s the perfect setting to relax, meet new people, and celebrate in style. Our private upstairs space gives us plenty of room to connect, laugh, and enjoy the energy of the night. Come when you can, stay as long as you like — the best conversations (and the most fun!) tend to build as the evening goes on. No agenda — just great people, live music, and a Cinco de Mayo celebration you won’t want to miss!

The global Azure community is coming together again, and Columbus is officially on the map. View the session lineup and speakers at [Global Azure Columbus 2026](https://coazure.github.io/cbus-global-azure-2026/) On **Saturday, April 18, 2026**, the Azure Columbus Meetup, DevOps Meetup, and Code and Coffee Meetup are hosting our local edition of Global Azure 2026. This is a free, community-driven event packed with learning, networking, and all things Microsoft Azure. Whether you’re building modern cloud-native apps, experimenting with AI agents, deploying containers, automating infrastructure, or just beginning your Azure journey, this event is for you! **What to Expect** * Engaging technical sessions * Real-world Azure architecture & cloud-native patterns * AI, agents, automation, and modern DevOps * Food and drinks (because learning burns calories) * Time to connect with fellow engineers, architects, and cloud enthusiasts **Who Should Attend?** * Software engineers (any language, any stack) * Cloud architects * DevOps engineers * Data professionals * AI explorers * Platform builders * Anyone who loves solving hard problems with great tools If you build, deploy, automate, scale, monitor, or optimize in Azure, you’ll feel right at home. **Why Global Azure?** Global Azure is a worldwide community event where Azure user groups host learning sessions on the same day across the globe. It’s grassroots. It’s technical. It’s practical. And it’s powered by people who genuinely love sharing what they’ve learned. And yes, it’s free to attend!

We meet to learn and practice American Sign Language and to grow our familiarity with Deaf culture. Facilitated by hearing folks (with a connection to a professional interpreter) using Deaf-created content. People of all ASL skill levels are welcome! As we learn, we hope to connect more with the Deaf community in Central Ohio. Join us as you're able! Come regularly or just once - whatever you're looking for! Each meetup will explore different topics related to ASL/Deaf culture, and will feature time to practice conversation with one another. Just bring yourself and a willingness to learn!

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)

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)