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Hello Gophers, Welcome back for another year of Go talks and networking! Would your company like to host our meetup? Let us know! If you'd like to give a talk - submit your proposals here: http://goo.gl/forms/54YvJT223F All talk formats work: short talks (5-10 min) as well as regular length (25 min). If you have more ideas - talk to us at the Gophers slack: https://invite.slack.gobridge.org/ in the #berlin channel, and follow us on twitter: https://twitter.com/gdgberlingo **Speakers**: *Simon Schulte* is a Tech Lead with nearly a decade of experience building scalable backend systems across fast-paced product companies. With a background in business informatics and a passion for Golang, cloud infrastructure, and DevOps, he has spent his career solving complex engineering challenges. He is particularly excited about leveraging AI and LLM workflows to eliminate the tedious, repetitive work that slows developers down — think tech debt, boilerplate, and documentation — so engineers can spend their energy on what actually moves the needle. For Simon, AI isn't about replacing developers; it's about giving them back their time. *Daniel Peralta Madriz* is a backend engineer from Costa Rica with around 6 years of experience working with Golang, although, sadly, he's been spending most of his time lately working with Node.js :(. He is interested in distributed systems, scalability, and developer experience, and is currently experimenting with how to leverage LLMs to safely and autonomously execute repetitive tasks. *Michael Morgen* is a Platform/infra engineer by day, runtime and network optimizations by night. Join in person at: **Talon.One** Talon.One is the incentives engine behind 300 of the world’s most-loved brands, unifying loyalty and promotions on a single flexible platform. Their customers run millions of real-time incentive decisions across markets, channels, and use [cases.As](http://cases.as/) incentives become more strategic than ever, they are continuing to raise the bar for what businesses can build and how fast they can build it Wiener Str. 10, 10999 Berlin https://maps.app.goo.gl/8eMjgWes1E4TBA3c7 or virtually at: https://www.youtube.com/live/qh__TQ1bMF0?is=hw21pk0ZE3HGyaaT *** Agenda 10:49 PM: Networking Networking over drinks and food 7:30 PM: Welcome Welcome words from the organizers 7:35 PM: Talk 1: Go-ing Against the Chaos: Deterministic LLM Workflows / Daniel Peralta Madriz (Backend developer) & Simon Schulte (Techlead of Webhooks and Notifications) @ Talon.One LLMs are powerful, but “it works most of the time” isn’t good enough for production. In this talk, we’ll walk through how to design deterministic workflows around non-deterministic models using Go. From structured iteration loops to validation steps and guardrails, you’ll learn how to move beyond prompting and start engineering reliable LLM-powered systems 8:10 PM: Announcements and break Announcements, HR lost & found, open mic 8:30 PM: Talk 2: About Go Memory Allocator / Michael Morgen, Platform/infra engineer @ Mirantis A short talk about how Go gives memory to your program. We will look at the main allocator parts, why small allocations are usually fast, when Go asks the OS for more memory, and a couple of simple examples where this knowledge helps performance. 9:05 PM: Networking Networking over drinks and food *** Hosted By Natalie Pistunovich, Organizer Ole Bulbuk, Organizer Tim Scheuermann, Organizer Anderson Queiroz, Organizer Complete your event RSVP here: https://gdg.community.dev/events/details/google-gdg-berlin-golang-presents-hybrid-may-golang-meetup-1/.

**We’ll now be meeting twice a week at Denizen House (Köpenicker Str. 40, 10179 Berlin), on** **Mondays and Wednesdays!** * **Mondays:** **levels A1 to B2** * **Wednesdays:** **levels A2 to C1** **We work with dedicated materials tailored to each level, so everyone will have a place to practice and improve.** **Event schedule** * **18:00 – 18:30** **Arrival and registration** * **18:30 – 19:50** **Sprachcafé** * **19:50 – 20:00** **End and clean up** **Please be aware that the moderated event starts at** **18:30. Before this time, we are busy setting up the space. Registrations usually take place around** **18:15 / 18:20. Participants are kindly asked** **not to arrive too far in advance** **at the house.** **If someone arrives much earlier, Denizen may ask them to pay either for a drink (consumption) or for a** **day pass, as the space is a co-working environment during the day.** **Please remember, our event is only happening from 18:00 to 20:00** **How the Sprachcafé works** **We use different materials to help participants gain confidence in German. Together with whiteboards and our volunteers, the Sprachcafé is based on** **interactive conversations** **in small groups.** **Participation fee** **The Sprachcafé has a** **participation fee of 5 €, which helps cover organizational costs and** **includes one soft drink for free.** **Tickets can be purchased directly on the day of the event, card and cash payments are accepted.** **As the Sprachcafé has become very popular, we now need to** **limit the number of participants. Please understand this measure; it ensures that everyone has a comfortable space to practice.** **We kindly ask you to be** **rücksichtsvoll** **and only RSVP “Yes” if you are certain you can attend.** **If your plans change at the last minute, please update your RSVP so someone on the waiting list can take your spot.** **Getting your ticket early can help secure your place.** **Please note** **Our event will begin** **promptly** **at the scheduled start time.** **If you arrive late, we cannot guarantee your participation, even if you have a ticket or have RSVP’d. We encourage all guests to arrive on time to ensure a smooth and enjoyable experience for everyone. Thank you for your understanding and cooperation.** **About Denizen** **Denizen is a new-style co-working space focused on being an integral part of local communities. Located on the ground floor of the historic Eiswerk on Köpenicker Straße in Kreuzberg, Denizen House is a communal place providing work, refreshment, and recreational facilities throughout the day. Think of it as a living room for the neighborhood.** **If you have any questions, don’t hesitate to let me know. If you’d like to contribute to this night, send me a message!** **Ich freue mich schon!** **Grüße,** **Nacho**

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/)

Practice Spanish & German, meet new people, and have a great time! 📅 Twice a month – Wednesday 19:00 📍BrewDog Mitte Practica español y alemán, conoce gente nueva y pásalo bien. 📅 Dos veces al mes – Miercoles, 19:00 📍 BrewDog Mitte Join us for another exciting Tandem event where language enthusiasts, both Spanish and German speakers, come together for a fun and interactive language exchange. Whether you are looking to practice your German, improve your Spanish, or simply meet new like-minded individuals, this event is the perfect opportunity for you. Don't miss out on this chance to broaden your language skills, make new friends, and immerse yourself in a diverse and welcoming community.

-DROP IN - *(English below)* **Lindy Hop \| Swing Dance Unterricht** Klassen (fast) jeden Mittwoch Abend 18\.15 Uhr Lindy Hop \| Swing Dance \- Starter 19\.30 Uhr Lindy Hop \| Swing Dance \- Improver oder/or SOLO JAZZ\! Bitte für weitere Informationen & Kosten hier schauen: [SWING PATROL ROLLBERG _ SCHILLERKIEZ - NEUKÖLLN](https://www.swingpatrolberlin.com/sp-rollberg.html) \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- classes (almost) every Wednesday evening 18\.15 Uhr Lindy Hop \| Swing Dance \- Starter 19\.30 Uhr Lindy Hop \| Swing Dance \- Improver All information & costs here: [SWING PATROL ROLLBERG _ SCHILLERKIEZ - NEUKÖLLN](https://www.swingpatrolberlin.com/sp-rollberg.html)

Bachata (the dance of our generation) is a social couple dance like Salsa - no choreography. The community in Berlin is active daily - you will meet a lot of open-minded people and make new friends quickly! Every Wednesday we have Bachata dance classes in Berlin - we are usually a group of around 20 people (95% beginners): 🕖 19:00 - class: Technique for Beginners+ (0-1+ years experience) • No partner needed (we switch). • You can start from zero in any of these classes! 📍 Adress: Klosterstraße 44 ([Google Maps Link](https://maps.app.goo.gl/5VGEqaVSy9xBCoHv9)) - near S+U Alexanderplatz • Entry: Entrance A, code: 5928# - 5th floor (500), then black door. • Price: 12€ per class. ✅ Dance teacher contact: [WhatsApp-group](https://chat.whatsapp.com/IWKPsid0cBDAUHCWKZNL2B) / [Instagram](https://instagram.com/mahir.bachata.berlin) 🇩🇪: Bachata (der Tanz unserer Generation) ist ein sozialer Paartanz wie Salsa - keine Choreographie. Die Bachata-Szene in Berlin ist groß und täglich aktiv - du wirst schnell viele offene Leute kennenlernen und neue Freundschaften schließen! Jeden Mittwoch findet dieser Bachata Tanzkurs statt - wir sind meistens eine Gruppe von 20 Leuten (95% Anfänger): 🕖 19 Uhr - Kurs: Technik für Anfänger+ (0-1+ Jahre Erfahrung) • Kein Partner nötig (wir wechseln). • Du kannst in diesen Kursen jederzeit von null starten! 📍 Adresse: Klosterstraße 44 ([Google Maps Link](https://maps.app.goo.gl/5VGEqaVSy9xBCoHv9)) - Nähe S+U Alexanderplatz • Zugang: Eingang A, Code: 5928# - drinnen Knopf drücken links an der Tür. 5. Etage (500). • Preis: 12€ je Kurs. ✅ Tanzlehrer Kontakt: [WhatsApp-Gruppe](https://chat.whatsapp.com/IWKPsid0cBDAUHCWKZNL2B) / [Instagram](https://instagram.com/mahir.bachata.berlin) Schreib uns gerne eine Nachricht, wenn du offene Fragen hast! Wir freuen uns auf dich ❤

Welcome to our cosy Godot Engine Community Meetup A Maze Edition! This is not a structured meeting, but rather a friendly get-together. We will hang out, chat and maybe show some of our current projects! 🦜 This is an open event and we will hang out at c-base afterwards, so it is fine to come late. Regardless if you are an artist, designer, programmer, beginner, hobbyist, professional or anything in between: join us for sharing knowledge, creating art together, coding together, joining game jams together and having fun! 🌼 This meetup will happen at [c-base](https://c-base.org), Rungestraße 20, 10179 Berlin. 🛰️ You can also join us on [our Discord Server](https://discord.gg/Sm3CgrqqQa). ☎️ Follow us on [Mastodon](https://mastodon.gamedev.place/@GodotUserGroupBerlin) for updates. 📢 Also check out [our website](https://godot.berlin). 🌐 Please be [excellent to each other](https://godotengine.org/code-of-conduct/)! 🕊️

Join this Professional Communication session — to sharpen the skills for architectural pitches, elevator pitches, interviews. This time we meet in the Monbijou park. 💡 How it works The event is split into two parts: 1. **Communication (10 minute rounds)** – One participant answers a round of design and behavioral questions. Each other participant gets to ask him one question. 2. **Feedback Round** – The group provides feedback on communication, structure, and clarity. Constructive criticism is encouraged. 💡You will be asked: * **Light design problems** (high-level reasoning, not code) * **Behavioral questions** (“Tell me about yourself”, “Describe a challenge you faced...”) No need to prepare anything in advance — just bring curiosity and an open mind. 💡Note: location is the entrance to Monbijou park

Join us for chill outdoor beach volley! 🏐 ☀️ 🏖️ 🍻 This event is for everyone who enjoys chill games and is not a *complete* beginner (A1.5+). We play 3v3 (or 4v4) with beach rules. There are no trainers at this event. Register via [the simultaneous event](https://www.meetup.com/berlin-volley/events/) for higher-level 2v2 matches (F1+). After playing, you can join us for socials with drinks and snacks at the bar area. We often play a social deduction game, which you're also welcome to join. It's recommended that you come 10 minutes early so you have time to change and find the fields. If it is your first time, 15 minutes might be even better. You can join whatever court you like and move between courts during the event. We self-organize, so once you finish a game, you can start a rematch, mix with another court, or take a break as you see fit. Upon arrival, join the warmup happening on one of the courts. Join our WhatsApp community via [https://volley.berlin/WhatsApp](https://volley.berlin/WhatsApp) ([QR code](https://secure.meetupstatic.com/photos/event/b/f/d/5/highres_532249109.webp)) Follow us on Insta at [https://www.instagram.com/berlinvolleyball](https://www.instagram.com/berlinvolleyball) **Rules**: Do not join if you have an infectious disease. **Venue**: We play at [Beach 61](https://beach61.de/). There are toilets and showers, but no lockers. There is a bar that sells drinks and snacks. **Payment**: You pay in advance via Meetup. Payment via PayPal or Urban Sports Club is not possible. **Refunds**: The venue does not provide refunds. Thus, we cannot refund you either, even in cases where the event is canceled due to bad weather. If you know you can't make it in advance, you can try selling your spot to someone else via WhatsApp or the comment section. You get a full refund if the event gets canceled due to poor attendance. Pictures might be taken and shared publicly, such as on Meetup or Instagram. You can opt out by letting the organizer know you do not wish to be photographed. By RSVP'ing to this event, you acknowledge and agree to the following: Participation in this volleyball event is at your own risk. The organizer is not responsible for any injury, loss, or damage sustained during the event, whether caused by negligence or otherwise. You are aware of the inherent risks involved in park volleyball and voluntarily assume these risks. You agree to hold the organizer harmless from any claims, liabilities, or expenses arising from your participation, including any medical costs. Share anonymous feedback with the organizer via [https://www.admonymous.co/entropy](https://www.admonymous.co/entropy)

**Join us for outdoor grass volleyball in Hasenheide park!** This event is not suitable for complete beginners. We play with two nets. The "chill court" is for mixed-level play with 3v3 up to 5v5. The "competitive court" is for higher-level 2v2 play with beach rules. Be sure to wear suitable sports clothing and perhaps bring a drink. There are no facilities such as changing rooms and showers in the park. A nearby public toilet is also available, but it might be closed, dirty, or not have toilet paper. **Location**: We play in the narrow clearing, located between the two paths in the center of Hasenheide park, on the southern side. Updates will be posted in the WhatsApp group, which you can join via [https://tinyurl.com/ParkVolley](https://tinyurl.com/ParkVolley) **RSVP**: Put yourself on the waitlist, even if other people are already on there. The waitlist is not chronological, so even if there are 30 people on there, you still have a chance! If you get a spot, you will be moved to the attending list and notified by Meetup. This is a free event with limited space. **If you can't make it, promptly update your RSVP to NO** so others can take your place. If you do not show up or cancel last minute, you will be marked as a no-show, reducing your chances of getting off the waitlist in the future. **Payment:** This event is free, but you are invited to make a 2 EUR donation towards equipment. **Attending**: Do not join if you have an infectious disease. You need to be on the attendee list to attend; **being on the waitlist is not sufficient**. Do not bring friends that are not on the attendee list. **Showing up without having a valid RSVP will get you banned**. **Safety**: Mind the terrain. The grass might be uneven and contain items such as bottle caps. It is not suitable for diving or playing like on a beach. Be careful not to twist your ankle. Keep an eye on your belongings since we are in a public park. We do *not* have a full first aid kit available. Please inform the organizer of any medical conditions that might require attention during the event. Some things you *might* want to bring: \* Sunglasses \* Drink \* Snacks \* Insect spray \* Sunscreen \* Toilet paper, if you wish to use the public toilet Join our WhatsApp community via [https://tinyurl.com/ParkVolley](https://tinyurl.com/ParkVolley) Follow us on Insta at [https://www.instagram.com/berlinvolleyball](https://www.instagram.com/berlinvolleyball) Pictures might be taken and shared publicly, such as on Meetup or Instagram. You can opt out by letting the organizer know you do not wish to be photographed. By RSVP'ing to this event, you acknowledge and agree to the following: Participation in this volleyball event is at your own risk. The organizer is not responsible for any injury, loss, or damage sustained during the event, whether caused by negligence or otherwise. You are aware of the inherent risks involved in park volleyball and voluntarily assume these risks. You agree to hold the organizer harmless from any claims, liabilities, or expenses arising from your participation, including any medical costs. Share anonymous feedback with the organizer via https://www.admonymous.co/entropy

Du möchtest dein Deutsch in entspannter Atmosphäre üben und neue Leute kennenlernen? Dann komm zu unserem regelmäßigen Sprachcafé ans Goethe-Institut Berlin! In unserem sonnigen Hinterhof sind alle herzlich willkommen – ganz besonders internationale Teilnehmende, die spielerisch und ohne Druck ihre Deutschkenntnisse verbessern möchten. In lockeren Gesprächsrunden tauschen wir uns aus, lachen zusammen und knüpfen neue Kontakte. Für eine gemütliche Stimmung sorgen Kaffee, Tee und Kekse – du musst nur dich selbst mitbringen. Die Veranstaltung ist kostenfrei! Wir freuen uns auf dich! 🌍

**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

Bring your work or your hobby, hang out, and code with us. Follow @buckeyecocoa for more information.

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.

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!

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**

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month John Lairson will share a notebook describing the Alpaca (Paper) Trading API and discuss different algorithms for evaluating stock trades. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com