MongoDB

**Chat & Updates:** Telegram: [https://t.me/+VfHrJXPGVWLflGhz](https://t.me/+VfHrJXPGVWLflGhz) Discord: [https://discord.gg/SVb44D9](https://discord.gg/SVb44D9) **\*Deutscher Text unten\*** **Come & go as it fits your schedule** We are meeting in-person and online every week. We offer an office environment for self-study, work and presentation/discussion (lightning talks). **Schedule:** * 10am open doors * 10am online video conference open [https://meet.in-berlin.de/fcc](https://meet.in-berlin.de/fcc) * optional, afternoon, around 1pm: 1h presentation session (if requested / offered) * 6pm or extended open-end **Open co-working / co-learning** work on the FreeCodeCamp curriculum or your own project. Vibe inside but vape outside. **Mutual exchange** and support is welcome. English and German, as needed. We have fast internet, chocolate bars, drinks and a nice atmosphere. :-) **Personal Consultation / Career advice** Bodo runs this meetup for many years. As a Senior Dev/DevOp he is open to giving guidance for your questions about career development. Book a free appointment (up to 60min) with him here: [https://calendar.app.google/yoZfVZR4D9zwt5in7](https://calendar.app.google/yoZfVZR4D9zwt5in7) **Code presentations on the projector** Everybody can participate. Show your code and present your project/problem. Get feedback or help and let others learn from you! You don't have to prepare a fancy presentation, show us what you're working on. Also in English or German, as you feel more comfortable. **Komm und gehe jederzeit. Zeitplan:** * 10:00 Uhr Öffnung vor Ort * 10:00 Uhr online room [https://meet.in-berlin.de/fcc](https://meet.in-berlin.de/fcc) * Nachmittag, ca 13 Uhr: optional 1 Std. Präsentation / Gruppen-Diskussion (nach Angebot/Bedarf) * 18:00 bzw. länger, open-end **Präsentationsrunde** nach Bedarf und Angebot am Nachmittag. Dort man kurz zeigen, woran man gerade arbeitet, eventuell Hilfe bekommen oder interessante Tool vorstellen. Du musst keine große Präsentation vorbereiten. Ebenfalls auf Englisch oder Deutsch, wie Du Dich wohl fühlst. **Gegenseitiger Austausch** und Unterstützung sind willkommen. Es wird Englisch und Deutsch gesprochen. **Persönliche Beratung / Karriereempfehlung** Bodo veranstaltet dieses Meetup seit vielen Jahren. Als Senior Dev/DevOp gibt er Dir auch persönliche Ratschläge für Karriere im 1:1 Gespräch. Reserviere Deinen kostenfreien Online-Videocall (bis zu 60min) hier: [https://calendar.app.google/yoZfVZR4D9zwt5in7](https://calendar.app.google/yoZfVZR4D9zwt5in7) **Tech & Buzz:** Claude Code, nodeJS, npm, nvm, TypeScript, JavaScript, Bootstrap, Tailwind, Bulma, React, Angular, NextJS, Vue, Nuxt, Docker, Container, Virtualization, Django, Codex, LLM, vibe coding, static site generation, OAuth2, Simple SAML, UX, UI, CMS, markdown, Hugo, Netlify, freeCodeCamp, Udemy, Community, Frontend Masters, Backend, SQL, noSQL, MySQL, Python, Linux, Development, git, Version Control, HTML, CSS, Open Source, Responsive Web design, Relational Database, API, Data Science, Machine Learning, Infosec, Cybersecurity, Big Data, AI, Artificial Intelligence, ChatGPT, Stable Diffusion, Data Structures, Data Mining, Ethical Hacking, OSI, Network Security, Julia, Deno, Test driven development, CI, continuous delivery, Deployment Pipe, Bash, devOps, Gitlab, GitHub, Jira, Cloud Computing, Azure, AWS, Apache Server, SSH, Algorithm optimization, SEO, C/C++, Mobile Apps, Apple iPhone, mac OS, Firefox, Chrome, Android, Programming Languages, Cryptography, Patching, Blockchain, DApp, Solidity, Analytics, geek, nerd, Neural Network, MongoDB, ExpressJS, Flutter, Go Lang, AJAX, OOP, UML Diagram, Computer Science, Engineering, Modell, View, Controller, Requirements, risks analysis, PKI, SSL, PGP Certs

Register: [https://globalai.community/chapters/berlin/events/agentcon-berlin/](https://globalai.community/chapters/berlin/events/agentcon-berlin/) Join us for AgentCon Berlin 2026, a dedicated space for developers, builders, startups, students, tech-enthusiasts researchers, and innovators to dive to explore the future of autonomous AI agents. This event is part of the AI Agents World Tour, connecting communities from San Francisco to Singapore. Whether you're designing intelligent copilots, orchestrating multi-agent systems, or advancing agent frameworks, AgentCon Berlin offers a platform to share insights, inspire others, and shape what’s next. More information soon! Supported by Neo4j

Hi friends, **To attend the meetup please ➡️➡️➡️ [REGISTER HERE](https://guild.host/events/react-berlin-meetup-tmi8du) ⬅️⬅️⬅️ via Guild.** **On May 19**, join us for an evening with the community — we’ll dive into scaling frontend architectures, the reality of “write once, run everywhere,” and lessons from building cross-platform applications in production. **🗣 Call for Proposals** Have an idea or story to share? Submit your talk proposal through our [CFP form](https://docs.google.com/forms/d/e/1FAIpQLSfbG_BEJJYuAtVL5vhMMnWTpQbYHzGM8kmlqaJ790-Lgqv0fA/viewform) and take the stage at one of our upcoming meetups! **🤝 Organized by** This event made possible thanks to the support from [React Summit](https://reactsummit.com/), [JSNation](https://guild.host/events/JSNation) and [React Day Berlin](https://reactday.berlin/) organizers – [GitNation](https://portal.gitnation.org/). **🤝 Sponsored by** Huge thanks to our friends from [Enpal](https://www.enpal.de/)! At EnpalTech we’re driving Enpal’s mission to revolutionize sustainable energy. Our team builds innovative applications that enhance every stage of the customer journey, from sales to energy management. With Enpal’s Energy Platform and Virtual Power Plant, we integrate decentralized energy sources to create a smarter, more efficient grid, accelerating the transition to renewable energy. We deliver impactful solutions — from operational software in Enablement Platform to appointment management in CraftOS — and stay agile to ensure renewable energy is accessible to all. [Enpal Teams: Software Engineering](https://www.jobs.enpal.com/teams/software-engineering) **🕑 Event Schedule** 18:30 - Doors open - snacks, beer, socialization 19:00 - Intro and announcements **19:10 - From One App to Many: Scaling Frontend with Domain‑Driven Architecture - [Natalia Dmitrieva](https://www.linkedin.com/in/natalia-dmitrieva-652307124/)** **19.35 - The Fourth Platform: How Vega Got Us Surprisingly Close to "Write Once, Run Everywhere" - [Bogdan Plieshka](http://linkedin.com/in/gotbahn/?skipRedirect=true)** 20:00 - Break with drinks **20:15 -** **React Native in 2026: Not Your Daddy’s React Native - [Conor Lamb](https://www.linkedin.com/in/conorobrienlamb/)** **20:40 - Networking, Open Mic Lightning Talks** Mingle until 21:30pm 🗣️ **Talks** **➡️ From One App to Many: Scaling Frontend with Domain‑Driven Architecture - [Natalia Dmitrieva](https://www.linkedin.com/in/natalia-dmitrieva-652307124/)** *How we transformed a React monolith into multiple apps inside one codebase.* *You always start small: one product, one team, one stakeholder. But once you succeed and need to scale, your original frontend architecture might not be ready for what comes next. As our Sales Process Orchestration Platform expanded to support multiple products and sales channels, our original monolithic application became a bottleneck.* *In this talk, I'll share how we transitioned to a domain‑driven, multi‑app architecture while deliberately keeping a single React codebase. You'll see how we applied Domain‑Driven Design concepts on the frontend, structured clear boundaries between sales channels, and used Nx to orchestrate builds, enforce architecture rules, and keep teams moving independently without losing shared foundations.* **➡️ React Native in 2026: Not Your Daddy’s React Native - [Conor Lamb](https://www.linkedin.com/in/conorobrienlamb/)** *React Native has changed a bunch, and if you haven't looked at it lately you're in for some fun. We'll walk through building a real app with (my beloved 😍) Expo. Talk about project setup to app store submission with detours into AI-assisted development and ofc, talk about the casual masochism that is mobile dev.* **➡️ The Fourth Platform: How Vega Got Us Surprisingly Close to "Write Once, Run Everywhere" - [Bogdan Plieshka](http://linkedin.com/in/gotbahn/?skipRedirect=true)** *"Write once, run everywhere" is a promising goal in software development, but one that often breaks down under real-world problems. At Zattoo, building streaming applications across Android, Apple, and Web meant years of separate native stacks that were not aligned, and therefore did not scale. This talk explains how moving to a multiplatform architecture, enabled by Vega as a fourth (React Native first platform), brought us very close to achieving that goal.* — **👍 Code of Conduct** By registering for this event you agree to comply with our [CoC](https://portal.gitnation.org/coc) **📩 Contact** events@gitnation.org [https://twitter.com/ReactSummit](https://twitter.com/ReactSummit) [https://bsky.app/profile/reactsummit.gitnation.org](https://bsky.app/profile/reactsummit.gitnation.org) [http://youtube.com/ReactConferences](http://youtube.com/ReactConferences)

## DNA. presents: "Singing & Stage Performance" ‍**‍** ***Tola (Yellow) Janowska*** is a 24-year-old musician from Poland. She studied Musicology, graduated from the School of Modern Music in Wroclaw and is currently studying Musical Vocal Performance in Berlin. After recording two bilingual albums (English and Polish) with Sony Music Poland and several years of experience in vocal coaching, Tola discovered her own technique and she's ready to share this knowledge with fellow artists, musicians, sensitive souls, and people that are open to experience something new.***‍*** ***Dozy Jane*** is a Danish-German singer, songwriter, and producer based in Berlin. Blending dreamy clarity with electrifying energy, her music fuses ethereal vocals with 90s Euro-dance and Y2K pop influences. A self-taught producer, she brings her bold creative visions to life, crafting unique sonic worlds. Her upcoming single *"Close My Eyes"* drops in April, with her debut album arriving in Summer 2025. You'll learn techniques to: * Tap into Your inner creativity * Overcome self-doubt and fear * Express Yourself authentically and confidently * Cultivate a sense of purpose in Your art and communication ##### *Stay open and inspired & Find Your Authentic Voice Through Musical Expression.* ##### *Join us for an Experience, share Your Story with fellow Artists & grow. Together.* ##### **SIGN UP:** Limited Spots. First come, First served. Tickets available: Online Tickets / Box Office ‍ ...for more info check out www.dna-artclub.com / follow us on IG: @nightart.club See Us Soon :) Love. [Tola (Yellow)](https://www.instagram.com/yell_o_woman/), [Dozy Jane](https://www.instagram.com/dozyjane/) & [DNA.](https://www.instagram.com/nightart.club/) ______ \*Members of Dair Night Art e.V. and Subscribers of DNA. Art GbR. \*\*By entering the DNA. ART HOUSE, You agree to comply with the Hausordnung of Dair Night Art e.V. and Geschäftsordnung of Dair Night Art e.V. Please ensure You review these documents thoroughly in advance.

We are back in the c-base! Do you already run NixOS and want to talk to other people or want an introductory session with some NixOS users. Just bring your machine! Usually there are no topics, we just sit in front of our computers, talk about stuff, debug some problems or review some PRs on nixpkgs. There are drinks usually available from the c-base bar. If you can't find us. just ask around or ask in irc (#krebs on hackint)

## DNA. presents: "CREATIVE WRITING" In this workshop, You will learn a method that can help You to strengthen Your access to Your creativity, write more, write better and get back into a flow state in which new ideas emerge. Rediscover Your creative flow with Lena's hourglass method. ##### HOURGLASS METHOD Lena will guide You through the three phases of her hourglass method, which consist of different writing exercises, and explain the background to them. You will use pen, paper and Your words as tools, but You don't have to be a poet to have fun and benefit from the workshop :) ##### APPLICATION OF THE METHOD: The method can also be used on Your own at home after the workshop, whenever You need a creative jump-start. ##### SETTING: The small group setting as a safe space also allows You to share your thoughts with others. You'll learn techniques to: * Tap into Your Inner creativity. * Overcome self-doubt and fear. * Express Yourself authentically and confidently. * Cultivate a sense of purpose in Your art and communication.

Women in Big Data Berlin supports AgentCon Berlin 2026 as a community partner. AgentCon Berlinis a community-driven conference focused on the future of AI agents and autonomous systems, taking place on May 19, 2026 at CODE University in Berlin. As part of the global AgentCon World Tour, the event connects local developer communities with a worldwide network of builders shaping the next generation of intelligent software — from autonomous agents to multi-agent systems. Bringing together 200+ developers, startups, researchers, and tech enthusiasts, AgentCon Berlin offers a platform to explore real-world applications, architectures, and tools powering agent-based systems today. ### Highlights * Keynotes from Microsoft & Neo4j * Expert talks (Qdrant, MemVerge, Reply, and more) * Real-world demos and hands-on agent frameworks * 200+ developers, startups, and tech leaders (Berlin-focused) ### What to Expect * Practical insights into AI agents & multi-agent systems * Technical talks and hands-on workshops * A developer-first, community-driven atmosphere This is a free, in-person event, designed for builders who want to move beyond hype and gain hands-on insights into designing and deploying intelligent systems. Register here: [https://globalai.community/chapters/berlin/events/agentcon-berlin-2026/](https://globalai.community/chapters/berlin/events/agentcon-berlin-2026/) Join us in Berlin and be part of a growing global movement shaping the future of AI.

Nice! You are looking for real long time friendship! You might have already lived in Berlin or other big cities and experienced the "Anonymous" culture for a while. Meeting random people over and over and never see the same person again! In order to find "Real Long Term Friendship" in Berlin, do as follows: * You should not care how many people are joining this meetup. You RVSP. Even if only one person is joining. Because if everyone are waiting for everyone else to RVSP, nobody joins and nobody finds a new friend. * You do not care how many people of the opposite sex are joining. You are looking for friends. Finding the best romantic partner in the world, while avoiding not very attractive others, can be your other goal, for another time. Here we are looking for Friends. Real ones. * You are going to risk a very precious property of yours: Your time! Yes, there are thousands of opportunities in Berlin, there might be a rock concert for free, a birthday party you might miss, an important person might call you and invite you spontaneously, but you never find new friends until you decide to risk your time and meet people anyway. "I will check my calendar and get back to you" also does not work. Commit your time and spend it. Trust me, you won't go bankrupt ;-) * You are ready to use your phone as a real phone! You might have been using your phone as a tablet to visit Instagram and Facebook and watch movies. But if you want to find friends, you must know that people might take your phone number and give you theirs. That means they will Call you! And you have to pick up the phone and answer it. If you want to find new friends, you must be ready to do something really hard for the first time after years: Call people first, and if they called you: Answer your phone! * You are going to meet some people twice! That's the point of friendship. We already can experience random encounters with random people in random places one at a time. But that is not called friendship. If you want friends, you must be ready to meet the same person more than once. If you agree with above, RVSP and COME! You will meet other people who think the same way. P.S: Now that you've read all the way down to here, I suggest you [watch this animation](https://player.vimeo.com/video/547249272?h=22f3dd0f6f).

### Creative Session for Song-Writers & Writers to connect, share & grow. Together. We create a safe and inspiring space guided by our DNA. Members and invited Artists - where Writers of all styles and backgrounds are welcome. ‍ ##### **WHAT TO EXPECT:** * Introduction: Connect, meet fellow artists, and ease into the space together. * Writing Session: Work on Your own project / get inspired by our creative prompts. * Feedback Round: Share Your work and receive thoughtful, constructive feedback. * Stage Time: If You feel comfortable, You are welcome to perform Your lyrics, poem / song. ‍ ##### **STAGE PERFORMANCE:** If You would like to perform, please bring Your instrumentals / backing tracks on Your phone. You can connect via Bluetooth to our mixer. A keyboard and guitar will also be available if needed. ##### **GUIDELINES:** * Offer encouraging and constructive feedback: “This part was strong—lean into it. You might explore this further…” * Be mindful that some pieces may be personal or sensitive. Please include trigger warnings where needed. * We create this space together - with respect, openness, and care - so everyone feels safe to express themselves. ‍ ##### **TICKETS:** available at the Box Office before the class ‍ ***Get ready to explore different writing styles, deepen your craft, and connect with new people.*** ‍ ...for more info check out www.dna-artclub.com / follow us on IG: @nightart.club See You soon :) Love. DNA. ______ \*Members of Dair Night Art e.V. and Subscribers of DNA. Art GbR. \*\*By entering the DNA. ART HOUSE, You agree to comply with the Hausordnung of Dair Night Art e.V. and Geschäftsordnung of Dair Night Art e.V. Please ensure You review these documents thoroughly in advance.

We’re heading to Home24 for a proper building session! You are invited! Come along to meet the community, swap ideas, and get stuck into some hands-on work. Reserve the spot with RSVP. 🗓 Agenda: ▶️ 6:00 pm: Doors open with networking and snacks 🍕🍻☕ ▶️ 7:00 pm: Opening Keynote ℹ️ 7:10 pm: Home24 presentation ▶️ 7:45 pm: Workshop (📌Laptops are required. Please charge them in advance!) Master the fundamentals of ADK and multi-agent systems. Design agents with specialized, clear responsibilities. Test and run agents locally. Deploy a multi-agent application to Google Cloud. Launch your first publicly available multi-agent system. ▶️ 9:00 pm: Networking ▶️ 9:30pm: Doors close 🔖 Requirements & Logistics Level: Beginner friendly, no prior multi-agent experience required. Skills: Basic experience with Python, Google Cloud, Docker, and Bash is a plus. Setup: Bring a charged laptop and avoid using a VPN during workshop tasks. Let’s learn, build, and have a natter. See you there! Agenda --- Hosted By Yevgen Batovskyi, Organizer Esra Kadah, Organizer Senior App Developer | Author of "Flutter Design Patterns & Best Practices" | Co-Organizer of Flutteristas, Flutter Berlin, GDG Cloud Berlin, Flutter Community AI Circle | 👩🏼‍💻 Antigua Mobile Hany Elfouly, Co-founder & CEO Mohamed Islem Ayari, Organizer --- Partners Google (https://blog.google/intl/de-de) home24 (https://home24.career.softgarden.de) --- Complete your event RSVP here: https://gdg.community.dev/events/details/google-gdg-cloud-berlin-presents-build-with-ai-hands-on-workshop-home24-1/.

Follow-Up Tango Seminar 22 March · 15:00–17:00 Lightness in the feet. Rhythm in the body. Joy in the embrace. A playful, dynamic seminar inspired by the vibrant energy of Orquesta Donato. Flow Motion Studio Instructor: Vasiliki B. 💃🕺🎯💯 · Cost: 20€ Bring Flat Shoes & Shocks 📍Flow Motion Studio,Neükolln

In May, [Bruno Caballero](https://github.com/bruno-ah-um) will show us how to target hardware accelerators from Java with MLIR based on [his fork of the OpenJDK Project Babylon](https://github.com/bruno-ah-um/openjdk-babylon-mlir-tosa). Bruno leads the Java Virtual Machines Engineering team at [MicroDoc](http://www.microdoc.com), which develops JVMs and maintains ports across various processors and operating systems. In this talk, we’ll explore a toy project that translates Java code into MLIR for the TOSA dialect, which is used for AI and accelerator workloads. We’ll briefly introduce current approaches (e.g., TornadoVM and Babylon/HAT), before looking at how this project reuses existing compiler infrastructure instead of building new backends. Finally, we’ll touch on whether DSLs should be embedded in general-purpose languages like Java or designed as standalone languages. Small snacks and drinks will be available. There is always space for outside topics and discussions. If you have specific questions, please bring them. Looking forward to meeting everyone again!

Hi everyone, Our next CorrelAid Berlin in-person meetup is coming up! 📰📊 🗓️ When: Thursday, May 21, 2026 🕠 Time: 18:30 \~ 20:00 📍 Where: Café Milagro, Bergmannkiez, Kreuzberg The meetup is informal and open to **data folks, journalists, NGO practitioners, and anyone curious about #DataForGood**. No talks, no slides, no prior experience required – just bring your questions, examples, and opinions. Whether you’re already involved in projects or just curious about CorrelAid Berlin and data science, you’re very welcome to join – grab a drink, meet others, and exchange ideas. Looking forward to seeing you there! CorrelAid Berlin team 💙

A lot of exciting new changes have happened in the recent months regarding OpenMates.org. To make it not just a more privacy & safety focused open source alternative to ChatGPT, Claude, OpenClaw etc., but to build AI team mates that are also more useful and reliable for everyday tasks like finding doctor appointments, apartments, events, flights and train connection, as well as planning and building projects and so much more. Effectively building the next generation operating system for a wide range of daily tasks & learning. All while ensuring that user interests are put first in every architecture and design decision, NOT advertisers. Now, with the first 200 active users, many more visitors, and close to 8000 git commits, let’s come together to talk about the next steps of OpenMate and to move OpenMates from a single person project to a team effort. If you are a user, developer, designer, storyteller / marketing enthusiast or community builder or just are curious about the project - feel free to join the meetup and contribute in building a real alternative to big tech :) Notes: [https://pad.dev.openmates.org/p/OpenMates_Meetup_May_19_2026](https://pad.dev.openmates.org/p/OpenMates_Meetup_May_19_2026)

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

Start your week the right way with Manic Mondays. Giving you an enjoyable Bachata lesson with a push of cool moves. The second hour has Beginner/Intermediate Salsa on 1. You must understand basic Salsa skills to participate. 730pm-830pm Bachata Cool Moves 830pm-930pm Salsa On 1 (Beginner/Intermediate) 15 for One Class 20 for Both Free Parking & Plenty of Dance Space. Viva Dance Columbus 2809 Festival Lane Dublin OH 43017

**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

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.

**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