Moon

BHNT #111: the fourth BHNT in 2026. The title is inspired by humans visiting the Moon again. Your hacks do not have to be connected to the title (bonus points if they do though) Please RSVP and bring your hacks! There are 8 dynamically allocated Slots that consist of 5min presentation + 5min conversation with the audience. To refresh your memories or get familiar with the concept - see some old hacks here: [https://bhnt.c-base.org](https://bhnt.c-base.org/) Hope to see you - looking forward! Please [RSVP here](https://platform.openmeet.net/events/bhnt-111-putlinehello-moon-eghjl)

Ready to roll into something sweet? 🍰 Unveil the magic of a beautifully decorated Swiss roll — light, fluffy sponge wrapped around luscious filling and finished with stunning designs that wow at first glance (and bite!). This treat is as delightful to look at as it is to eat. Stay tuned for a swirl of creativity and flavor! 💫 **Les Amis** is a women-only community of friendly souls. We provide access to hundreds of experiences that explore your passions and connect you with other event participants. **Check our website to learn more, and apply to join our community and events**: [lesamis.cc/apply](https://www.lesamis.cc/apply)

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)

Join us for the LFDT Berlin Monthly Meetup, a relaxed gathering for those involved in or curious about Linux Foundation Decentralized Trust (LFDT). This is a space for open discussions, knowledge sharing, and networking among professionals working on decentralized technologies. Each month, we come together to share projects, discuss challenges, and exchange ideas on navigating the LFDT ecosystem. Whether you're looking for insights, solutions, or just good company, you'll find a supportive community eager to collaborate and help. There’s no formal agenda—just organic discussions on the latest developments, real-world applications, and ways to make decentralized trust more impactful. Whether you’re an industry expert or just starting out, you’re welcome to join us, contribute, or just listen in. Come grab a drink, meet like-minded people, and let’s build the future of decentralized trust together!

**Unlock Your Potential with Pranic Healing! In German and English** Join us for a **Try out experience** every Tuesday evening at 6:30pm close to Treptower Park Train Station. Experience the transformative benefits of this powerful cleansing and energizing technique in a welcoming environment. Whether you’re curious about energy medicine or looking to enhance your well-being, this is the perfect chance to try it out. No prior experience is needed—just come as you are! Discover the power of Pranic Healing—your journey to wellness starts here! ❌ RSVP through the Meetup website **doesn't guarantee your spot** Please do contact- carolineargent@pranaheilungberlin.de to confirm your interest in attending. We look forward to meeting you. Remember to check your **Spam/Junk folder** for the ✉️ e-mail

Save the date! The Mozilla Meetup series is back in Berlin with an evening focused on Firefox, open source, and the future of the web. To account for typical no-show rates, we’ve opened more RSVP spots than we can physically accommodate. Entry will be **first-come, first-served**, and we’ll close doors once we reach venue capacity (\~50 people). As always, this event follows the Mozilla Community Participation Guidelines. *** **Agenda (tentative)** **18:00 – 18:30** Welcome & meet and greet **18:30 – 19:00** **Firefox Mobile – Open Source Opportunities** Discover how you can get involved with Firefox Mobile and contribute to open source. *Speaker: Nishant Bhasin* * Q&A **19:00 – 19:30** **Firefox Roadmap + Features** An inside look at what’s coming next for Firefox and the features shaping the browser. *Speaker: Andres Furlan* * Q&A **19:30 – 20:30** Networking & raffle 🎁 **What to expect** * Informal, community-first atmosphere * A mix of talks, discussion, and networking * Open to both long-time contributors and newcomers * A chance to connect with others passionate about the open web **RSVP is required**

Join us for an in-person evening exploring how GenAI is transforming modern engineering — from low-code feature engineering and research workflows to agent-driven optimization and production ML systems. Please make sure you register with your full name, as it will be checked by security on arrival. \*\*\* 📅 **Date and Time:** Tuesday, April 28, 2026 Doors open: 17:30 Talks start: 18:00 Panel discussion: 19:20 Networking & pizza: 20:00 \*\*\* 📍 **Location:** Zalando Office BHW Warschauer S-Bahn, Auditorium Cinema \*\*\* 📝 **Agenda:** **17:30 – Doors Open** Arrivals and check-in \*\*\* **18:00 – Talk #1** **Research Harness Engineering** [Florian Hönicke](https://www.linkedin.com/in/florian-h%C3%B6nicke-b902b6aa/) — Elastic Every programmer is now a manager of coding agents — but human oversight quickly becomes the bottleneck. Florian will share how Elasticsearch built an agentic research harness to support their v5-omni model development, enabling structured experimentation and faster iteration cycles in applied AI research, and why building your own harness is the key unlock for teams serious about scaling agentic workflows. \*\*\* **18:20 – Talk #2** **Low code feature engineering in Zalando with Agentic support** Ola Wahab — Zalando Feature engineering at scale has traditionally been a high-friction process — days of infra setup, complex tooling coordination, and lots of boilerplate. Ola will walk through how Zalando is shifting to a low-code, configuration-driven approach where teams define pipelines declaratively, and how agentic coding has compressed the journey from feature discovery to production from weeks to days. \*\*\* **18:40 – Talk #3** **Ranking Logic Migration from Monolith — Using Code Agents for Iterative Performance Benchmarking** [Ivan Potapov](https://www.linkedin.com/in/ivan-sur/) — Zalando How Zalando’s Search and Browse Discovery team extracted a latency-critical ranking service from a monolith and validated it for production. This talk covers: * Migrating the ranking read path into a standalone Ranking API * Using AI-powered agentic loops with async-profiler to close the p99 latency gap * Practical lessons on allocation profiling, virtual threads, and production validation \*\*\* **19:00 – Talk #4** **Coding Agents for ML Pipelines & AI Systems (Hopsworks + Claude Code)** [Jim Dowling](https://www.linkedin.com/in/jim-dowling-206a98/) — Hopsworks Coding agents are rapidly reshaping software and ML engineering. This talk explores how prompt-driven development is changing how we build ML systems. We’ll cover: * ML problem decomposition and architecture optimization in an agent-driven world * Data-driven experimentation workflows * Building faster and higher-quality systems with Claude Code * Why building on top of AI infrastructure boosts productivity Based on Jim’s O’Reilly book: *Building AI Systems with a Feature Store* Format: 20 min talk + 10 min Q&A \*\*\* **19:20 – Panel Discussion** **Product Mindset in Engineering — The Evolution of the AI Engineer Role** \*\*Host: Ivan Potapov Jim Dowling — CEO, Hopsworks Leela Sharma — Director of Engineering, Zalando Alexey Grigorev — Founder, DataTalks.Club Florian Hönicke — Principal AI Engineer, Elastic A discussion on how GenAI is reshaping engineering roles, expectations, and the shift toward product-oriented thinking. \*\*\* **20:00 – Pizza, Drinks & Networking** Wrap up the evening with food, drinks and conversations with fellow engineers and speakers. \*\*\* Invite your friends and join us for an evening of learning and networking! **⚡️ Interested in giving a talk? ⚡️** Are you interested presenting on your Elastic use case? We welcome 5-10 minute lightning talks, 45-minute deep dives, and everything in between. If you're interested, please send an email to [meetups@elastic.co](http://meetups@elastic.co/?utm_source=luma)

April 29 is World Dance Day — so let’s dance. We’ll meet on the green by the Spree near Ostbahnhof for a silent disco. Bring your headphones, pick your music, and dance under the night sky. 🎧 What to expect: – casual dancing (solo or together) – different vibes, same space – a slightly surreal midweek moment 🎧 Bring: – headphones + device – your favorite playlist – ✨ something that glows (optional, but encouraged) Yes, it will look weird. That’s the point. Orga This meetup is donation based. Your contribution helps keep this community alive and is highly appreciated. You can either contribute in cash or via Buy me a Coffee: [https://buymeacoffee.com/butterflyradar](https://buymeacoffee.com/butterflyradar) Questions? Check our Meetup-FAQs: [https://socialbutterfly.berlin/meetup-faq/](https://socialbutterfly.berlin/meetup-faq/) Meet your host I’m Julia — a Berlin local who loves bringing people together. My path went from growing up in a dance school to studying philosophy to working in IT support, and somehow all of that led me here: hosting meetups and creating spaces where people can show up, relax, and connect. Insta [https://www.instagram.com/juwaberlin/](https://www.instagram.com/juwaberlin/) LinkedIn [https://www.linkedin.com/in/julia-waehnert/](https://www.linkedin.com/in/julia-waehnert/) About The Social Butterfly Club 🦋 is a Berlin-based community that has been bringing people together for over three years. Each gathering is part of a larger framework designed to help friendships grow through shared experiences in the city — with a long-term vision of turning Berlin itself into a shared, playful experience. Love the vibe? There’s a whole community waiting for you. 🦋 Join the Social Butterfly Club and experience Berlin together Join our Telegram Group: [https://t.me/+OnASVWZ7emhjYzEy](https://t.me/+OnASVWZ7emhjYzEy) Subscribe to our weekly newsletter: [https://socialbutterflyradar.substack.com/](https://socialbutterflyradar.substack.com/) 🌸 Support us with a monthly membership: Become a Founding Flutterer for 14.95€/month and help the Social Butterfly Club grow. Your support keeps the project alive and helps us continue creating spaces where people in Berlin can meet and connect. [https://steady.page/en/social-butterfly-club/](https://steady.page/en/social-butterfly-club/)

**Relax. Connect. Create. ☕** After a full week of work, meetings, study sessions and life in fast-forward, it’s time to slow down. Join us this Saturday afternoon in Berlin for a relaxed coffee hang-out where this week's agenda is good company & warm drinks. You're also invited to bring some boardgames, drawing/coloring materials (I will bring an adult coloring book) **What’s the plan?** We’ll meet in a cosy spot, draw, chat about everything and nothing, swap stories and simply enjoy the moment. No pressure. No formalities. Just a bunch of friendly people sharing a Saturday coffee. **Who’s welcome?** Everyone! Whether you’re a Berliner born and raised, newly arrived in the city, from Germany or abroad, if you like meeting open-minded folks and spending some relaxed time—come join us. **When & how?** Saturday afternoon. Detailed time and place in our Telegram group. ➡️ Join us on Telegram: [https://t.me/berlinsaturdaycoffee](https://t.me/berlinsaturdaycoffee) Hop in, say hello, and we’ll share the final details. **Why join?** * Because you deserve a break. * Because you enjoy being creative. * Because you enjoy boardgames * Because meeting new people sparks fresh energy. * Because coffee tastes even better when shared. * Because Saturday afternoons were made for this. Respect and Safety: There is always at least one organizer present at every meetup. If you ever feel unsafe or bothered by someone’s behavior, you can reach out to an organizer privately. Your identity will remain confidential, your concern will be taken seriously, and no inappropriate behavior is tolerated — anyone making others feel uncomfortable will be removed from the group immediately. We hope to see you there. Bring yourself, your smile, drawing materials, your stories—or just your comfy self. Let’s make Saturday a little more laid-back, a little more social and a lot more nice. See you soon! —Your Saturday Creative Coffee Crew ☕

An inspiring, high-energy meeting of public speaking, connection, and personal growth in the heart of Berlin. **Mercury Toastmasters Berlin** invites you to our weekly meeting at our new home at **Das Center, Potsdamer Platz**, in the stunning **Historic Imperial Breakfast Hall**. *Experience the **power of prepared speeches** loaded with bold ideas, participate in our **dynamic Impromptu Session**, and **gain valuable insights** during our feedback segment.* *Leave with practical tools, fresh ideas, and renewed inspiration.* *Whether you want to speak up at work, boost your presence, or just meet inspiring people, you’ll feel at home at Mercury Toastmasters Berlin.* *** **[What to Expect:](https://mercurytoastmasters.de/find-toastmasters-meetings-in-berlin/)** ✨ A supportive space to speak, grow, and connect 🎤 Engaging prepared speeches ⚡ Fun, fast-paced impromptu speaking challenges 💬 Feedback session you can actually use 🌍 A friendly, international crowd (around 25–30 people) **Schedule** (times may vary) ⏰ 19:15 - Doors open & networking 🎙️ 19:30 - Prepared Speeches 🏓 20:35 - Impromptu Session (Guest welcome to join) ↩️ 21:00 - Constructive feedback 💬 21:30 - Food, drinks & relaxed socializing **No experience needed.** ***Come curious. Leave energized.*** *** **🤙 [Hear it from our members:](https://maps.app.goo.gl/eRtvR9DRNqU9WZQn7)** *“You can sharpen your public speaking skills and gain tons of confidence, while having fun and making new friends. Mercury is well-structured, fun, and affordable.”* — *Therese Pitt* *“Mercury gave me a safe place to speak, create, and grow. I love the multicultural vibe and supportive community. It’s the best place to learn and have fun.”* — *Krisztina Linka* *** **[Did You Know?](https://mercurytoastmasters.de/about-mercury-toastmasters-berlin/)** Toastmasters is where people go to get better at speaking—and grow into confident communicators and leaders. Today [Toastmasters ](https://mercurytoastmasters.de/about-mercury-toastmasters-berlin/)has 350,000+ members across 16,000 clubs in 143 countries. And [Mercury](https://mercurytoastmasters.de/find-toastmasters-meetings-in-berlin/) is one of the best places to experience it. So bring your curiosity, your energy—and just be yourself. Whether you’re just starting or ready to level up, there’s a place for you here. *** **[Wondering what you get as a member?](https://mercurytoastmasters.de/membership-mercury-toastmasters-berlin/)** Think expert feedback, real-world speaking practice, and a supportive crew that’s got your back. [See you Wednesday night! 🎉](https://mercurytoastmasters.de/find-toastmasters-meetings-in-berlin/)

**Welcome to The Shared Spoon :)** Hi, I’m Ayushi your friend and host for the afternoon and I’d love to open my home for a small, cozy gathering where people can slow down, meet new faces, share food and enjoy good conversation in a relaxed space. The idea is simple: everyone brings a little something they’d like to share. It could be: – a homemade snack – dessert – tea – fruit – or anything that feels special to you **Contribution -** **€5 per person.** To help cover the setup, ingredients and the Meetup subscription. This is for anyone who enjoys: ☕ genuine conversations 🌿 meeting new people 🍰 sharing food 🏡 feeling at home with strangers who may become friends Location would be shared with guests who have registered so keep an eye on your meet-up messages. :) Limited spots so it stays intimate. ✨

## 🕯️ Candlelight Dinner Meetup 🍕 Join me for a cosy and romantic **candlelight dinner meetup** at a comfortable and welcoming spot in Berlin. Enjoy a relaxed evening with delicious pizza, warm ambience, and meaningful conversation. 📍 **Location:** Pizza Max Schöneberg 🌐 **Address Link:** [https://maps.google.com/?q=Martin-Luther-Str.+84,+10825+Berlin](https://maps.google.com/?q=Martin-Luther-Str.+84,+10825+Berlin) 🕰️ **Time:** Flexible (Evening preferred) 💡 **Setup:** Candlelight table, calm atmosphere, and a friendly vibe 🍽️ **What to Expect:** * Freshly made pizzas & sides * Comfortable seating with a candlelight touch * A simple yet memorable dining experience 🎁 **Special Note:** Ask at the counter for any ongoing offers or discounts—you might get up to **10% off** 😉

# Hast du Lust, mit uns zu singen? Wir wollen einen Chor gründen, der allen offensteht.Für Groß und Klein, für alle, die gerne unter der Dusche singen, und für diejenigen, die schon etwas Erfahrung haben, sowie für alle, die schon immer davon geträumt haben, in einem Chor zu singen, aber nie den Mut dazu gefunden haben. 💣Die Teilnahme ist kostenlos! Haben wir dein Interesse geweckt? Schreib uns: colombo@pangea-haus.de 🧭 Wo? Im Pangea Haus, 5Etage (Open Space) 🎤 Wer? Alle ⌚ Wann? Donnerstags, 18Uhr

**🥳 FREE EVENT 🥳** Looking for the perfect mix of daytime vibes and nighttime energy this May Day? We’ve got you covered. Join us at Caprice for a full-day social and party experience, brought to you in collaboration with **Sip Happens!**, **Big City Events,** and **Berlin Evening Socials**. Whether you're coming to meet new people, catch up with friends, or just soak in the atmosphere, this is designed to be a true social hotspot. ✨ What to expect: * **FREE entrance all day & night:** no barriers, just good vibes * **Outdoor DJ sessions from 15:00–22:00:** perfect for mingling and enjoying the spring energy * **Afterparty indoors from 22:00 till late:** when things turn up a notch Come early for relaxed conversations, stay late for the dance floor connections. Bring your crew, or come solo and leave with one. Either way, you won’t be standing still for long. See you there. 🥂

http://photos2.meetupstatic.com/photos/event/2/a/9/6/600_348310902.jpeg Instructor - Crow, HPS Class fee is $30 at the door or approved exchange RSVP with Advance pay of $25 (discounted) by PayPal on the web or by contacting Enchanted Elements (614) 437-2642. Reservations made directly to Enchanted Elements will be added to the class list manually not online. Private Instruction ~ Closed to the Public ~ Initiated Members Only Please come prepared for ritual. Blessings ~ Crow

**Tickets are on Sale now $22.00 curtainplayers.org** **please list your seat number in comments . Purchase in E .We also will meet for lunch if interested which is posted separately 😊**

It feels like we just saw each other 🤷. Join members of the local design and UX community for our monthly breakfast. For May we’re stopping in for Rooh’s popup breakfast/cafe concept. You know someone is getting the lobster yuzu croissant, and that’s not even the prettiest thing on the menu!.

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

**Pagans on the Patio! Summer/Fall Series** A casual gathering the first Thursday of each month. Time to relax, meet new people, and reconnect with old friends. There is no charge for the event itself and all are welcome but there are a few guidelines: 1. **You are expected to purchase food and/or drink to compensate the Cantina and our server.** 2. **No soliciting. Do not bring samples of your wares or brochures of your services.** 3. **Please respect the spiritual and political views of others that are present. No disruption of the peace.** In case of inclement weather, we will find seating indoors. I hope to see you there. Blessed be! \~ Cynthia ❤️---