News

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

Join us for a fun evening of meeting new people and enjoying drinks at a local bar! This is a great opportunity to make new connections and socialize in a relaxed and friendly atmosphere. We’ll be gathering at **Atlantik Bar** from 19:00 onwards. It’s a great spot for beers and exciting conversations in the evenings and during the daytime. The alternative atmosphere can be hard to find in Berlin Mitte, and this is one of the coolest spots in the area. Don’t miss out on this chance to expand your social circle and have a great time. We can’t wait to see you there! 😊 **\*\*How to find us\*\* 😉** 1\. Please don’t ask the bartender where the group is\. Check the next point ❤️ 2\. We will post photos and videos of where the group is sitting on our Slack community\. You can join the community here \- [https://join.slack.com/t/berlinsocials-flock/shared_invite/zt-3lk26f4ok-J2cc7KRFCPe6QCgCdzLtaA](https://join.slack.com/t/berlinsocials-flock/shared_invite/zt-3lk26f4ok-J2cc7KRFCPe6QCgCdzLtaA)

**Join us for our next Machine Learning in Healthcare meetup in Berlin — proudly sponsored by the QUEST Centre!** Pizza is still back! Yes, we fought for it in 2025, and we continue to do so in 2026. Come hungry. We are very happy to announce our speaker **Prof. Grégoire Montavon**, who is a Professor at Charité Universitätsmedizin Berlin at the Institute of AI in medicine (IKIM) and a Research Group Lead in the Berlin Institute for the Foundations of Learning and Data (BIFOLD). He received a Master's degree in Communication Systems from the École Polytechnique Fédérale de Lausanne in 2009 and a Ph.D. in Machine Learning from the Technische Universität Berlin in 2013. His research focuses on methods and applications of Explainable AI (XAI). A particular goal is to develop approaches that integrate well with state-of-the-art machine learning (ML) models used in medical diagnosis and research, so that these models can be verified and explored for insights. **His talk´s title is:** **Tackling Imperfect Data Environments via Robust and Explainable AI** **Abstract:** In this talk, I will present novel techniques for learning in imperfect data environments, specifically addressing challenges such as mislabeling and spurious correlations. Central to these new approaches is the design of new loss functions and Explainable AI techniques that can isolate artifact-inducing components during or after training, allowing them to be systematically removed from the final model. *** 📍 **Location:** “Atrium” conference room, 5th floor, Spreepalais, Anna-Louisa-Karsch-Straße 2, 10178 Berlin 🕕 **Doors open at 6:00 pm** — Talks start **at 7:00 pm!** * 6:00–7:00 pm — Arrival, food, and networking * 7:00 pm — Welcome by the hosts, followed by the talk + Q&A * 8:00 pm — More networking (and possibly more pizza) ⚠️ *Pro tip:* Sometimes only one of the four elevators is working! 📢 **IMPORTANT:** If you RSVP but later realize you can’t make it, *please release your spot* so others can join. *** This meetup is made possible with the kind support of the **QUEST Centre for Responsible Research at BIH**, who are providing both the venue and the delicious refreshments. We look forward to seeing you there!x

*Weekly Lunchtime Concert at the Luisenkirche* Join us every Thursday from 12:30 to 13:00 at the Luisenkirche (Gierkeplatz, Charlottenburg) for a lunchtime concert featuring a rotating roster of talented organists. Each week offers a unique performance, showcasing diverse styles and interpretations on the magnificent new Hans Reil organ, installed in 2024. *Wöchentliches Mittagskonzert in der Luisenkirche* Jeden Donnerstag von 12:30 bis 13:00 Uhr laden wir Sie herzlich zum Mittagskonzert in die Luisenkirche (Gierkeplatz, Charlottenburg) ein. Genießen Sie abwechslungsreiche Orgelkonzerte, gestaltet von einem wechselnden Kreis talentierter Organisten, und erleben Sie die beeindruckende Hans-Reil-Orgel, die 2024 installiert wurde, in voller Pracht. *** | 1.1.26 | William Peart | | ------ | ------------- | | 8.1.26 | William Peart | | 15.1.26 | Henry Fairs | | 22.1.26 | Kit Downes | | 29.1.26 | William Peart | | 5.2.26 | Kit Downes | | 12.2.26 | Matthias Schmelmer | | 19.2.26 | William Peart | | 26.2.26 | Jonas Sandmeier | | 5.3.26 | Kit Downes | | 12.3.26 | Raymond Hughes | | 19.3.26 | Deborah Faul | | 26.3.26 | William Peart | | 2.4.26 | Kit Downes | | 9.4.26 | Jonas Sandmeier | | 16.4.26 | William Peart? | | 23.4.26 | Kit Downes | | 30.4.26 | William Peart | | 7.5.26 | Kit Downes | | 14.5.26 | William Peart | | 21.5.26 | Helene Strack | | 28.5.26 | Matthias Schmelmer | | 4.6.26 | Jonas Sandmeier | | 11.6.26 | Kit Downes | | 18.6.26 | William Peart | | 25.6.26 | Jonas Sandmeier | | 2.7.26 | Dick Sanderman | | 9.7.26 | Julia Landau | | 16.7.26 | Christiane Drese | | 23.7.26 | William Peart | | 30.7.26 | William Peart | | 6.8.26 | William Peart | | 13.8.26 | William Peart | | 20.8.26 | William Peart | | 27.8.26 | Jack Day | | 3.9.26 | William Peart |

We're thrilled to welcome you to the Berlin Ethereum Meetups! Join us as we explore technical and non-technical topics and new ideas, collaborate on projects, and connect and grow our community! Our meetups are open to all - from those new to Ethereum to long-standing community members and developers. 🗓️ **Agenda** *(subject to change)* 🕕 6:30 - 6:45 pm - Arrivals 🕡 6:45 - 7:00 pm - Ecosystem & Community Updates by Eniko (Ethereum Foundation) 🕡 7:00 - 7:20 pm - Building a Truly Trustless Ethereum Wallet for Android by Dirk Jäckel (independent developer) *Every Ethereum wallet you've ever used secretly trusts a server, and they all silently query centralized RPC providers. This talk presents a different approach: an Android wallet library that eliminates the RPC dependency entirely.* 🕖 7:20 pm - 9:00 pm - Open discussions and community networking 👩‍💻 Full Node is also excited to offer free coworking for all event attendees on the day of the meetup, starting from 9:00am. Feel free to come by Glogauer Str. 6 early and get some work done! Berlin is one of the most vibrant hubs for Ethereum builders, researchers, and advocates of privacy, decentralization, and open-source technology. Whether you’re here to learn, contribute, or simply connect, join us as we continue building the next chapter of Ethereum in Berlin. The talks will be recorded and uploaded to our [Youtube channel](https://www.youtube.com/@ethereumberlin). Subscribe to stay up to date! Apply to speak at our future meetups: [Speaker Application](https://forms.gle/5y9Y5ywZC7pSEqpV9)! The event is sponsored by [Gnosis](https://www.gnosis.io/). To learn more about Ethereum, go to [ethereum.org](http://ethereum.org/) (content available in many different languages).

Moving to Berlin is an adventure, but let’s be real—the "Berlin Schnauze" (the city's famous bluntness) can be a bit intimidating, and finding your people takes time. Whether you arrived last week or last year, if you’re looking to break out of the "expat bubble" or just find some friendly faces in your neighborhood, this is for you. We’re gathering at **Ä Stube**, a cozy, alternative gem in the heart of Neukölln. Think dim lights, great music, and a relaxed atmosphere where you don't have to shout to be heard. We can't wait to welcome you to the neighborhood. 🥨✨

Hello everyone, After a great restart last month, we’re happy to invite you to the next Rust Berlin meetup at the JetBrains office. We’ll stick to the classic format: an evening with two main talks, followed by time to connect, discuss, and catch up with the community. Finger food and drinks will be available throughout the evening. **Agenda** * Doors open: 18:30 * Start: 19:00 * Short welcome and updates from JetBrains * 2 talks (20–30 minutes each) * Open mic / lightning talks (optional, a few minutes each) * Networking **Speakers** Egor Lebedev - Welcome and a short note from the RustRover team Till Adam - Slint-MCP In this talk, Till will walk you through the implementation of the MCP server for the Slint GUI framework - and how it's implemented in Rust. He will walk you through the implementation from design to implementation. Gaurav Gahlot - Rust meets Kubernetes This talk is a hands-on walkthrough using kube-rs. We'll connect to a cluster, query pods, watch real-time events via async streams, and build a minimal controller - all in Rust, all running live. **Speaker Bios** Till Adam is the CCO at KDAB and has been working on open-source since the 90s. Originally a C++ company, KDAB has been working with Rust for the last 8 years. One of their biggest projects is CXX-Qt. Their specialization on the Rust side is use in hybrid, high-performance, high-correctness codebases. Gaurav Gahlot is a Software Engineer with experience building scalable platforms with Go, Rust, and Kubernetes. He maintains the CNCF Akri project and actively contributes to open source. **Open mic & future talks** We’ll reserve a few short slots for anyone who wants to share something with the group. This can be a quick idea, a project, or an experience. Slides are optional. If you’re interested in giving a longer talk at a future meetup, this is also a good opportunity to connect with the organizers. **Venue & access** Please arrive on time. We will have someone at the entrance to let people in between 18:30 and 19:15. After that, access becomes more difficult as the doors are locked and require manual opening. **Registration** The venue has limited capacity and events typically fill up with a waiting list. If you register and can no longer attend, even at short notice, please un-RSVP so someone else can take your spot. Looking forward to seeing you all!

Always wanted to try Short form improv? You are in for a treat! ComedyShorts are bringing you double the fun - in one night! On Sunday May 3rd our new cast will set the stage on fire, performing for the first time on the comedyShorts stage and right after that YOU get to try it out in our first open Jam of the year, where we will teach you some of our classic games and give you the chance to try them out! AND - the entrance is free (we will pass the hat around in the end and you can support us as you see fit) Seats are Limited so make sure to reserve your spot at the link: [https://www.yesticket.org/e/Ge5WiDxJRw](https://www.yesticket.org/e/Ge5WiDxJRw) Sunday May 3rd 8pm at 800a, Stettiner Str. 19, 13357 Berlin

Most of us would know peruvian cuisine for its famous civeche, but there're actually lots more delicious seafood, meat and vegetable dishes to discover. This is a small delightful restaurant serving refined peruvain cuisine with an impressive wine list. Please do not sign up unless you are sure to attend. Late cancellations or no shows will be deleted from the group immediately.

Join us for a fun **Speed Friendship & Social Meetup** at **Pizza Max Schöneberg**. This is a great chance to meet new people, have good conversations, and make new friends in a relaxed and informal environment. **What to expect** * Short conversations with different people * Friendly and social atmosphere * Meet new friends in Berlin **Special offer** Participants get **10% off on dine-in orders**, so enjoy delicious pizza while meeting new people. 🍕 **What to bring** Just bring yourself and a positive attitude. **How to find the group** Look for the **Meetup table inside the restaurant** when you arrive. Come together, enjoy pizza, and make new friends! 🤝🍕

Welcome to **Electric Social** \- Berlin’s electrifying arcade bar where nostalgia meets nightlife\! Think neon lights\, beers\, retro games\, and the unbeatable Sip Happens vibe you know and love\. Join us for a night of laughter, friendly competition, and laid-back fun as we take over one of Berlin’s coolest new spots. Whether you’re a Mario Kart master, a pinball wizard, or just here for the vibes, there’s something for everyone. 🎮 **What to expect:** ✨ A full bar with great drinks and booths to hang out in 🕹️ Classic arcade & video games to battle your new friends 🥂 The friendliest crowd in Berlin (that’s you lot!) 💬 Chill areas to chat, connect and hang out between rounds This isn’t your average night out — it’s a chance to play, laugh, and meet new people in a place built for fun. So grab your tokens, bring your A-game, and get ready for another unforgettable Sip Happens night! 📍 **Electric Social, Berlin** 🗓️ **Doors open at 20:00** 🎟️ RSVP now to secure your spot – it’s going to be *next-level fun!*

Location Karabach Restaurant https://nollendorfplatz.karabachrestaurant.de/ Maaßenstraße 9, 10777 Berlin Please be aware, there're 2 Karabach Restaurants in Berlin. We're going to the one in Maaßenstraße 9 at Nollendorfplatz! Quote from the restaurant As an address that stands out in Berlin’s dining scene, we look forward to treating you to the delicious flavors of Azerbaijani and Turkish cuisine. We warmly welcome you to our restaurant! Time Thursday, April 30, 6.30 pm I kindly ask you to avoid last minute cancellation. Please update your RSVP till about noon on the events date at the latest.

**🥳 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. 🥂

RSVP on Luma: [https://luma.com/ou3ks02q?utm_source=Meetup](https://luma.com/8jyxp83f?utm_source=Meetup) Silent Reading / Creating Club is a gathering for people who enjoy focusing together in public. Bring a book, a notebook, a sketchpad, knitting needles, whatever you’d like to spend a quiet hour doing. All projects and all participants are welcome. We’re building a community of readers and creators who value depth, presence, and shared silence. The reading and creating isn't the real highlight, though, it’s in the people who return and make it feel like a familiar room. (Please RSVP “yes” only if you can make it, so we can save a seat for you and others on the waitlist.) Our Meeting Point is the **W66 Café**. There’s no entrance fee, but please order at least one item from the café and don’t bring outside food or drinks 🙂 No assignments, expectations, or pressure. Just a shared hour of intentional silence, followed by the opportunity for good conversation. 🕰 Our Agenda **10:30 – 11:00** Arrivals, ordering drinks/food, light social time **11:00 – 12:00** The Great Quiet Hour (Read. Write. Sketch. Code. Think. Sit.) **12:00 – 12:30** Optional socializing: share what you were reading or creating, or simply continue in quiet focus. ## 🏡 House Guidelines To keep this space calm and welcoming for everyone: • Silence during the focus hour (no calls or conversations) • Put cellphones on silent mode • If using technology, please avoid meetings or audio (headphones please!) • Arrive before 11:00 if possible to minimize disruptions

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!.

⚠️ **IMPORTANT: You must sign up and buy a ticket here to attend:** [https://groupvibe.com/](https://groupvibe.com/) **Join the Columbus City Brunch Club and make new friends!** Each meetup brings together 4–6 people for casual conversations over brunch. We use the Groupvibe platform to facilitate the meetup and ensure everyone’s a good fit. 👉 **To attend, you’ll need to complete registration via this link:** [https://groupvibe.com/](https://groupvibe.com/) We’ll share the exact location of the upcoming meetup the night before only if you have bought a ticket or membership plan. **Why this works:** \* Smaller groups make real conversations easier. \* Discover new restaurants in your city, together. \* Curated lunch venues with good food and vibe. \* If you hit it off with your group, there’s plenty of time to hang out afterwards. **Note:** RSVPs on Meetup don’t reflect total attendance. Many attendees register directly via our website. The event on [Meetup.com](http://meetup.com/) is only a placeholder. This meetup is organized by Groupvibe, a small team passionate about helping people form meaningful friendships offline.

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!

FREE event [https://www.ccad.edu/chroma](https://www.ccad.edu/chroma) Friday, May 15, 3–7 p.m. CCAD campus, 60 Cleveland Ave, Columbus, OH Join Columbus College of Art & Design for *2025* *Chroma: Best of CCAD*, our annual campuswide exhibition showcasing outstanding student work from across the college’s academic programs. This faculty-juried show features select work from CCAD students of all class years, and is a can’t-miss end-of-year campus celebration recognizing their tremendous achievements. It’ll be a night of fun and entertainment, with interactive games, animation and film screenings, art symposiums, poetry and prose readings, and more (along with some of the best local food trucks). *Chroma* is free and open to all. Many exhibitions including... **Game Art & Design:** **DSB, first floor, Welcome Center lobby and Room 115**

Who’s up for a fun night out? Get your boots on, grab your cowboy hat, and let’s have some fun! Thinking about checking out PBR Cowboy Bar & Smokehouse for a lively evening to unwind, connect, and enjoy the night together. • Lively atmosphere with country vibes • Delicious food + drinks • Music, dancing, and lots of laughs • Great conversation and new connections

Let's grab some coffee/food and share a morning chat! The East Market has an ample parking lot and outdoor and indoor seating. Grab a cup of coffee from Winston's Coffee & Waffles or on your way to East Market and meet us on the second floor - table behind or east of the elevator. Per what this group is about: "Everyone is welcome! International transplants to Columbus who want to improve language skills, Columbus residents who enjoy talking to people from other countries, and those who would like to discuss international travel and culture, and who enjoy getting together for good conversations."