Space Flight

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)

Looking for a low-pressure way to get offline, meet new people, and actually do something fun on a Tuesday? This is a relaxed pool night in Spandau—come for a few rounds, stay for the chats, and leave with a couple of new familiar faces. **What to expect** * Casual pool games in **rotating rounds** (so everyone gets to play) — **beginners are welcome** * A friendly vibe: meaningful conversations *and* a bit of playful pool-table silliness * We **start on time** — please arrive punctually, otherwise it’s hard to fit you into the rotation **Costs** * Your own drinks + shared table costs (depending on group size) **RSVP** Please RSVP on Meetup so I can estimate how many tables we’ll need.

**Nebius.Build/BER** is a technical in-person event for engineers, architects, founders, and developers building, deploying, and scaling AI systems in production. The program features talks from Nebius and partners including Anyscale and Tavily, with practical insights into distributed training, running open-source models in production, inference scaling, and operating reliable AI workloads at scale. It also includes a hands-on workshop where participants can deploy their own model and connect it to a working inference pipeline. **Why attend?** Expect technical sessions instead of marketing, real architecture learnings from production environments, and direct exchange with engineers on site. **Agenda** 12:00–13:00 Registration and lunch 13:00–13:15 Opening remarks 13:15–13:45 Talk: Reliable clusters for large-scale distributed training 13:45–14:30 Talk: Making open models reliable at scale 14:30–15:00 Coffee break 15:00–15:25 Breakout sessions: Anyscale talk or OpenClaw workshop 15:25–15:50 Agentic Search / workshop continuation 15:50–16:05 Keynote 16:05–16:20 Fireside chat 16:20–16:30 Closing remarks From 16:30 Networking and help bar This event is ideal for ML infrastructure engineers, AI/ML platform engineers, architects, technical founders, and developers working on scalable AI systems. **Register here:** https://nebius.com/events/nebius-build-berlin **DISCLAIMER:** This is a third-party event announcement. We are not responsible for it and are only promoting it. If you would also like to feature your event here, please contact us.

¿Te apetece pasar una tarde agradable jugando a juegos de mesa y conociendo gente nueva en un ambiente relajado y cercano? Este encuentro está pensado precisamente para eso: socializar, conectar y pasarlo bien, sin importar si ya conoces los juegos o si es tu primera vez en el grupo. ¿Qué tipo de juegos jugamos? Elegimos juegos accesibles, dinámicos y sociales, no solo juegos largos o complicados. Por ejemplo: Juegos rápidos y ligeros como 6 nimmt!, Love Letter o Sushi Go Juegos de interacción y risas como Codenames, Dixit o Exploding Kittens Juegos de deducción social como The Resistance, Salem o Werewolves Y, si apetece, algún juego un poco más estratégico, siempre explicado con calma No importa si es tu primera vez en el grupo: explicamos las reglas y elegimos juegos accesibles para que todo el mundo se sienta cómodo desde el principio. El juego es solo la excusa para socializar y conectar de forma natural. Un espacio seguro y diverso Solemos ser un grupo diverso, abierto y con muy buen rollo, donde se respeta a todo el mundo. Queremos crear un entorno amable, sin juicios, en el que cualquiera pueda sentirse a gusto. ️ En español (o para practicarlo) Si hablas español o te apetece practicarlo en un entorno amable y natural, estarás más que bienvenida/o. El grupo suele estar formado por personas de distintos orígenes y niveles, y la comunicación fluye de manera relajada. Si te apetece conocer gente de forma tranquila, sin presión y con los juegos como punto de encuentro, este plan es para ti. ¡Te esperamos! Nota: se solicitará a los participantes una donación voluntaria de 2€ para gastos de organización y compra de juegos.

(Note: We are cross posting this event on behalf of our friends at [Nebius.](https://nebius.com/)) The Nebius Build Tour is a series of in-person technical gatherings designed for engineers working on real-world AI infrastructure. Join ML engineers, platform architects, and technical founders for deep dives into deploying, scaling, and operating AI systems in production. **Time, Place and Location** April 28, 2026 13:00-18:00 Impact Hub Berlin Rollbergstraße 28A, 12053 Berlin **[Register on the Nebius website](https://nebius.com/events/nebius-build-berlin#form)** This is not a marketing conference — it’s a focused environment for builders to share architecture patterns, lessons learned, and practical approaches to running AI workloads at scale. Nebius.Build/BER brings together engineers from Nebius and partners including Anyscale and Tavily, with sessions covering distributed training, running open source models in production, and scaling workloads across large GPU clusters. The program includes a mix of technical talks, partner sessions, and a hands-on workshop, where you can deploy your own model and connect it to a working inference pipeline. The program includes talks on real architecture breakdowns and implementation details from teams running production systems, with discussion of inference scaling, latency, reliability, and cost-performance tradeoffs, alongside practical deployment workflows. The content runs from 13:00 to 16:30, followed by a networking reception and a help bar, allowing time to connect directly with engineers and peers. [Register](https://nebius.com/events/nebius-build-berlin#form) your interest to receive updates on upcoming events and be the first to secure a place when registrations open near you.

Erlerne Meditations- und Entspannungsverfahren kennen und sorge damit für mehr Bewusstheit und Stressreduktion in deinem Alltag.

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)

If you are in Kyiv next week and want to analyse and improve your investment approach, please register here: https://luma.com/78944dx4

Every last Wednesday of the month (unless communicated differently here), you are invited to join the Game Night @ C\*SPACE Berlin, to have fun, relax, and meet new people! Our co-working space member at C\*SPACE, Miguel, together with Carlos, will be hosting the Community Game Room, bringing new games every month for you to discover or rediscover. Between the 2 of them, they have more than 300 games in their collections so there will be something for everyone. You are also more than welcome to bring along your favorite games! **Entry:** Free, but we do ask for a donation for drinks available in the kitchen (coffee, tea, beer, etc.). **About our hosts:** **Miguel** is a professional venture capitalist by day and amateur game designer by night. He has a wide ranging interest in tabletop games including word games, social deduction party games, economic Eurogames (favorite designers are Martin Wallace and Uwe Rosenberg!), historical wargames and card games like Bridge, Poker and the German classic, Skat. **Carlos** is a mathematician who marvels at the art and science of designing board games , and greatly enjoys playing in a group (particularly cooperative games!). If you have questions about the event, don't hesitate to reach out to Miguel on Whatsapp or Signal at +491623965924.

**The AWS Women’s User Group Berlin** is delighted to invite you to our upcoming meetup sponsored by Public Cloud Group focused on **Cloud Governance and AI Security**. Join us for an evening focused on building compliant cloud platforms and securing modern AI workloads. Whether you're dealing with highly regulated workloads in your organization or looking to stay ahead of the curve in AI Security, this session will equip you with practical knowledge and innovative approaches. **Speaker Info** **Keynote Talk** **Speaker: Shabnam Motamedirad** **Position:** Solutions Architect, Public Cloud Group **Talk Title: Governance First: Building a Compliant AWS Multi-Account Setup** **Abstract:** Highly regulated industries face strict requirements around security, governance, compliance, and auditability, yet they still need the agility and scalability of the cloud. In this talk, we will walk through how to design and implement a secure AWS Landing Zone tailored for regulated environments using AWS Control Tower as a foundation. **You’ll learn:** * What defines a highly regulated environment and the common compliance challenges in cloud adoption * The core concepts of an AWS Landing Zone and why it’s the foundation of a secure multi-account strategy * How AWS Control Tower helps establish governance, security guardrails, and account provisioning * How and when to customize Control Tower to meet advanced regulatory or organizational needs **AI Security Talk** **Speaker: Nensi Hakobjanyan** **Position:** Solutions Architect, AWS **Talk Title: Securing AI Workloads on AWS: Defense-in-Depth for the Age of Generative AI** **Abstract:** From classic ML to generative AI and autonomous agents, every layer of the AI stack introduces new security challenges. But do we need to reinvent the wheel? In this session, we explore how traditional security principles like identity, data protection, threat detection, and governance apply to AI workloads using native AWS services, and where they need to adapt for AI's unique risks. This session is perfectly suited for everyone looking to build AI that's powerful and secure by design. 🗓️ **Event Details:** \- Date: Wednesday\, April 29th \- Venue: Amazon Office EDGE East Side Tower [address](https://maps.app.goo.gl/41rxVNQbBNmwLdWE8) \- Time: 06:00 PM \- 9:00 PM Doors open at 6:00 PM Food & drinks will be provided. 📋 **Program Schedule:** 18:00 - Registration and Welcome Networking 18:20 - AWS Women's User Group Welcome 18:30 - "Governance First: Building a Compliant AWS Multi-Account Setup" Speaker: Shabnam Motamedirad, Solutions Architect, Public Cloud Group Explore how regulated organizations can safely adopt the cloud with a secure AWS Landing Zone powered by AWS Control Tower. 19:15 - 19:30 Break 19:30 - "Securing AI Workloads on AWS: Defense-in-Depth for the Age of Generative AI" Speaker: Nensi Hakobjanyan, Solutions Architect, AWS Discover practical approaches to building AI that is powerful, scalable, and secure by design on AWS. 20:10 - Q&A and closing remarks 20:15 - 21:00 Networking, food & drinks 🎟️ **RSVP** Don't miss this excellent opportunity to connect with Shabnam, Nensi, the AWS WUG Team and a thriving community of cloud enthusiasts and professionals. Secure your spot by RSVPing now! Seats are limited! Please note that this user group is specifically for WOMEN and FLINTA\* (female, lesbian, inter, trans\*, non-binary, and agender) only. We kindly ask you to respect the space we are creating and invite you to explore the AWS User Group Berlin for more events. \*\*\*\*\*\* 🚨Attention🚨 This meetup is hosted at Amazon Offices and attendees must be registered to go through building security. Make sure you bring an ID card with you, and you register the event with a valid name that matches to your ID. Media and Consent: We inform all attendees that photographs and videos will be taken during the meetup and will only be used by the event organizers for documentation and promotional purposes. By RSVPing to this event you are consenting to our media policy. Please let the organizers know if you do not want to be in the pictures/videos. Thank you very much for your cooperation! \*\* The AWS Women’s User Group is the very first official women-centric AWS User Group in DACH and EMEA. This group serves as a secure and supportive platform for women and FLINTA\* who want to share their AWS knowledge, passion for cloud computing and advance their career through targeted learning opportunities. Code of Conduct: At the AWS Women's User Group in Berlin, we have a strong and unequivocal code of conduct in place to create a safe and empowering environment for all.

Hola chicos, Moin zusammen, lasst uns Deutsch und Spanisch sprechen und ein paar Bier zusammen trinken, die Idee ist einfach und gut :) Bitte bringt zumindest basis Deutsch oder Spanisch Kenntnisse mit! Vamos a hablar español y alemán y tomar unas cervezas, la idea es simple y buena jaja. ¡Por favor, ven por lo menos con un nivel básico de español o alemán! Danke, gracias!

Dear Kotlineers, After a slightly longer break than planned - we are back! This time we meet in the chambers of **voize GmbH** \- one of Berlin's \(if not the\) most flourishing startups\. As the flowers open and the days stretch long, we're dancing into May with some talks. **Line-Up:** 👉 **Coroutines behind the scenes** by *Sergey Shkurov* Have you ever wondered how Kotlin coroutines actually work under the hood? In this talk, we dive into the JVM bytecode behind suspend functions and reconstruct the state machines step by step. You’ll follow a hands-on exploration of real compiled code and see how continuations and suspension actually work. 👉 **YOUR TOPIC HERE** by *TBD* **Speaker Bios:** 🗣 *Sergey Shkurov* A Kotlin enthusiast since 2019. 🗣 *YOUR NAME HERE* TBD

**Important:** Register on the **[AICamp event website](https://bit.ly/4tOpZvw)** is required for admission. Join Nebius, Anyscale and Tavily for deep dives into deploying, scaling, and operating AI systems in production. Nebius.Build/BER brings together engineers from Nebius and partners including Anyscale and Tavily, with sessions covering distributed training, running open source models in production, and scaling workloads across large GPU clusters. The program includes a mix of technical talks, partner sessions, and a hands-on workshop, where you can deploy your own model and connect it to a working inference pipeline. Why Attend: ✔ Learn from engineers running production systems on inference scaling, latency optimization, reliability ✔ Hear real architecture breakdowns and implementation details from teams deploying AI at scale ✔ Go deep on infrastructure and performance ✔ Hands-on technical sessions focused on real deployment scenarios **Agenda:** * \* 12:00pm\~1:00pm: Check-in and Lunch * \* 1:00pm\~2:30pm: Tech talks and Q&A * \* 2:30pm\~3:00pm: Coffee break * \* 3:00pm\~4:00pm: Hands-on labs * \* 4:00pm\~4:30pm: Wrap up and closing remarks * \* 4:30pm: Happy hour **Who Should Attend:** * ML infrastructure engineers * AI / ML platform engineers * Principal engineers and architects * Technical startup founders and CTOs * Developers building or scaling AI systems \-\-\-\-\-\-\- For the latest Berlin Tech News, Events & Jobs head to **[techinberlin.com](https://www.techinberlin.com/)**

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/)

Details 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 Freshly prepared snacks in the deli for purchase Festive Band/Music Margaritas/Mexican Beer Tasting + Taco Bar: $15.00 per person (covers 4 Margarita or beer samples and one pass thru the Taco Bar) Where: #MarketDistrict (Grandview Yard) location. The party room (our private space) will be decorated with both patios open! Adjoining upstairs area also open for over flow and mingling. After Party: Sometimes, we head to a venue to hear live music afterwards. LDNL is at Black Swan in Hilliard tonight! Wear your bright colors and cheerful !Salud!

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!.

Rev. Steven Clevenger is an ordained spiritualist minister with over 40 years experience as a Spiritual Healer, Clairvoyant and Spiritual Teacher, educated and trained at the White Lily Chapel. Rev. Siobhan Wolf Shaffer is an ordained spiritualist minister and certified medium and healer with over 20 years experience. She began her development in 1988 in Pennsylvania and continued when she moved to Ohio in 1998 where she studied at Rays of Lights Church with Rev. Steven Clevenger. Our full worship services consist of an inspirational lecture, healing meditation, and messages from the spirit world that serve to demonstrate evidence of eternal life. Please visit our Official Church Website (http://raysoflightchurch.com) for more information.

While some are still meeting online, this is an in person event. Please note that we have attendees of all levels of speaking, including some native speakers. All are welcome! Also, as we meet at the same time and place each week, many don’t RSVP on the app, so we will likely have more attendees than noted here. Note: if you are asked to pay and upgrade the Meetup app, this is not necessary. You can ignore this and still attend our meetings. Find us on our [Facebook group](https://www.facebook.com/share/g/1EKw86WJCp/?mibextid=wwXIfr).