Firefighters

We are happy to invite you to our next iOS meetup. This time we cooperate with the amazing 42 Berlin to share the knowledge and experience in iOS development. 18:00 Doors open 18:30 Welcome on campus **18:45** **— Sebastian Hagedorn, director of Engineering at Clue, presents "The Sensitive App".** Is your app really working, or just not crashing? “The Sensitive App” reports subtle bugs regardless of origin, and validates your assumptions in production so you don’t have to resort to guessing or praying. Learn how to turn your app into the first line of defense for your entire system’s health! **19:45** **— Dmitry Kurkin, lead Mobile Engineer at SuperNext, presents "Lessons that iOS Native Project could learn from ReactNative in agentic development".** We'll inspect the components of the React Native engine that provide faster feedback and boost agentic iterations.

**[4 WEEKS CLASS ON FIGURE DRAWING](https://berlinschoolofdrawing.weebly.com/figureclass.html)** **[for beginners](https://berlinschoolofdrawing.weebly.com/figureclass.html)** THURSDAYS 5 to 7 pm\*\*.\*\* JUNE 18TH TO JULY 9TH 135€ ALL INCLUDED 35€ DROP IN [BOOK IT HERE!](https://berlinschoolofdrawing.weebly.com/figureclass.html) **A 4 weeks class for beginners.** **The goal of the class is to learn basics of figure drawing such has volume, lines, weight, shading.** **We'll focus on proportions and forms, introducing methods and tools to simplify the human figure.** **We will work on quick and long poses, standing and sitting poses in order to understand foreshortening.** **The overall goal will be to be able to draw models with shading and volume.** **We will mainly work with pencils**

The longest day of the year is comming and let's another Kotlin meetup. This time we geather at N26! **⚠️⚠️⚠️ Due to a venue policy please submit the following form for additional details. Without it, you won't be allowed inside the venue:** https://forms.gle/XjqVXkD3FARCM6jA8 **Line-Up:** 👉 **TestBalloon: Kotlin testing is easier (and more fun) than you think** *by Oliver Okrongli* You want an easier way to write tests? Parameterize tests in plain Kotlin? Reuse a series of tests? Easily extend own your test setup? Have first-class support on all platforms? All without struggling with a huge framework API? TestBalloon is a new test framework that brings the power of Kotlin to your test setup. With a small-surface API, a hierarchical test structure and an extensible DSL, TestBalloon makes Kotlin testing easy, even at scale. Oliver, the author of TestBalloon, will show testing patterns and strategies and lots of practical examples, ranging from simple unit tests with less boilerplate to advanced testing with coroutines and generated data. This talk is based on insights first presented at KotlinConf 2026 in Munich. At the end of this talk, you’ll be able to firmly the answer the question: "How can I master Kotlin testing with ease, and make my team release with joy and confidence, every time?" 👉 **One Topic to Rule 'Em All** *by Yonatan Karp-Rudin* Kafka delivered every event exactly once, in order, and lost nothing. So what broke? This talk follows that question into the gap most event-driven systems leave open: what actually guarantees the order your domain depends on, and what quietly doesn't. We start from a real log line, find the crack in an architecture that looks clean and ships fast, and rule out the fix everyone reaches for first. The cure turns out to be one sentence of domain thinking plus one line of config, though the Schema Registry will fight you on the way there. A live demo runs the bug and the fix back to back: same load, same hero, one change. If you build with Kafka, you have probably shipped a version of this bug. You will leave able to spot it and fix it before it pages someone. 👉 **He Who Must Not Be Migrated** *by Nicola Corti* **Speaker Bios:** 🗣 Oliver Okrongli Oliver has been shaping and creating software from backend to frontends. He is the author of TestBalloon, a next-generation Kotlin test framework. Before, he has helped to maintain Kotest, and contributed to several libraries of the Kotlin ecosystem as well as the Kotlin compiler. Can be found on GitHub (OliverO2) and the kotlinlang Slack (Oliver O). When not developing, he is most probably in deep talks, dancing, snowboarding or F18 catamaran sailing whenever he gets a chance. 🗣 Yonatan Karp-Rudin Yonatan Karp-Rudin is a Staff Engineer at Billie, building event-driven systems in Kotlin and Spring Boot. Off the clock, he plays with AI agents and builds random tooling, trying to hand off as much of his own workflow to a machine as he can. The rest of the time he's brewing mead or deep in a video game. **🗣 TBD**

**[DRAWING AND PAINTING CLASS](https://berlinschoolofdrawing.weebly.com/mixed-media-3.html)** **[on VARIOUS TECHNIQUES](https://berlinschoolofdrawing.weebly.com/mixed-media-3.html)** ***[SUITABLE FOR BEGINNERS](https://berlinschoolofdrawing.weebly.com/mixed-media-3.html)*** Weekly on Thursdays from 7.30 to 9.30 p.m. \- to be joined anytime\! FROM THU MAY 7TH to JULY 23rd 2026 Join anytime! *Scroll down for detailed program* Pricing options: \- 4 entrances/€120 \- to be used within 7 weeks from purchasing \- Special 3 MONTHS booking: €290 \- one time drop in: 36€ [BOOK IT HERE!](https://berlinschoolofdrawing.weebly.com/booking---contact--venue.html) This is an ongoing class from MAY to JULY 2026 The subscription to the class can be done monthly ( the 4 entrances don't have to be used in a row ) Plus: SPECIAL Price for booking 3 MONTHS to be followed in a row Each individual will be guided separately so any level is welcome! **ALL MATERIAL WILL BE PROVIDED by us:** however you are more than welcome to bring your own material and try things out. The aim of the class is to target a big range of people who know nothing about drawing, to the ones who have some experience already and want to develop ideas, techniques etc. therefore it will be suitable for complete beginners or intermediates. We will sometimes have models, sometimes work on still life, sometimes on botany, sometimes we will focus rather on techniques and some other times it ́s more liberated and free. The goal of the class is to learn how to draw, and how to find your own style with time. **DETAILED PROGRAM:** MAY 7th to JULY 30th 2026 May 7: Introduction to drawing with pencil forms, volume, perspective and shading. May 14: Drawing with pen and ink still life, focusing on positive and negative space and silhouette drawing. May 21: life drawing session with model, elaborating on pencil and charcoal and pen skills, learning about figure drawing, and applying the previous sessions into body forms and shades May 28: Drawing the face with pencils June 4: Intro to Acrylics. Materials and techniques. June 11: Colour theory applied through all painting mediums. June 18: Abstract surrealism in acrylics. How to start a painting against the fear of the blank. June 25: Image transfer with acrylic mediums and mixed media. July 2: Intro to watercolour and gouache July 9: Botanical art (drawing and painting). July 16: Introduction to Indian(Chinese) ink, learning how to work with shadows, layers and lines July23: Mixed media painting July 30: life drawing with Model, material choice up-to students

In Bad Company is a one-hour stand-up show hosted by Sepideh Kaav, featuring 2–3 of Berlin’s best comedians at one of Mitte’s coolest bars, HIER WO DU STRAHLST. Expect a night of great comedy, terrible decisions, and the kind of socializing where by the end of the night we all somehow know each other a little too well. No topic is off limits. No one is fully safe. Come with friends, come with a date, come alone, honestly, especially come alone, maybe you meet your future best friend or soulmate here. 🍸 HIER WO DU STRAHLST 📅 Thursday 8:30 PM (CEST) Doors: 20:30 Show: 21:00 to 22:00

Thursday Game Night in Friedrichshain at RuDi´s. The biggest, oldest and longest running Berlin Board gaming weekly meetup. Please join us for an evening of gaming. Everyone is welcome and everyone can find a table for themselves. There is plenty of tables for core gamers, and as many tables with welcoming games. And also tables with party games and social deduction. *** **🎲 Games & Food 🍪** We'll have around 50ish games ([Check out our collection!](https://boardgamegeek.com/collection/user/RuDi_Library?objecttype=thing&ff=1&subtype=boardgame&own=1)), but please feel free to bring your favorite games with you. We have some snacks and beverages, but you can also bring your own food & drinks. **💰 Entrance is 2 € 💰** Please pay the entrance fee in the kitchen on the ground floor. You can pay when you arrive or before you leave, but don't forget! **📍 How to get there 📍** We're located right between S/U-Bahn station Warschauer Straße and S-Bahn station Ostkreuz. Consult [Google Maps](https://maps.app.goo.gl/xQn6hnKu3Tpy9gG48) or [Open Street Map](https://www.openstreetmap.org/directions?from=&to=52.502457%2C13.457166) to find the exact way from your place to the meetup. If you get lost, call us (see "how to contact us?" in this event description below). **👥 Discord server 👥** Try our Berlin Board Gamers Discord server to chat and find other players. You can use it to prearrange games for the Thursday meetup, find players for gaming sessions you want to host at home on other days, and even buy and sell used board games. Join us now: [https://discord.gg/6Wsncta](https://discord.gg/6Wsncta) **🤗 How should I behave? 🌈** We value diversity, inclusion, and respect in our community. We want everyone to feel welcome and comfortable at our events, regardless of their age, gender, race, ethnicity, religion, sexual orientation, disability, or any other aspect of their identity. To ensure a positive and safe environment for everyone, we ask all participants to **follow our [Code of Conduct](https://docs.google.com/document/d/1pn_TLJyPx4HDjrQPbwjQkoF7EbLmqVNRY2CT_zq2qEk/edit?usp=sharing)**. **❓ FAQ ❓** "Is it a problem if I only speak English?" * No problem, all games are played in English. "Is it okay if I come later?" * Sure, you might have to wait a little until a new game is started though. "It's my first time and I'm unsure what to do / everyone seems to be playing already..." * Seek us out (ask somebody to help you find an organizer or ask by name for Andi, Hannes, Elli, Angelika, Sanja, Malte, Aaron, or Will and we'll give you a little introductory tour. :) "Is it okay if i bring my dog?" * No, the community center won't allow it. "I'm using a wheelchair. Can I attend the meetup?" * Yes! The venue has a wheelchair-accessible toilet and a wheelchair lift in the back of the building. It would be great if you could contact us beforehand, so we can make sure that the lift will be operational on the specific day. "Can I donate a game to the meetup?" * It depends. We have limited storage space and can only accept donations of popular games that will be played often. Please contact us for more details. **📞 How to contact us? ✉️** * In case of an **emergency** or a time-sensitive question (e.g. you got lost on your way to the meetup), call: 0179 9309 418 * For all other matters, write in the #rudi-friedrichshain channel on our Discord server (you'll find a join link in this event description) or leave a comment here on meetup.com * For sensitive matters, write a DM to Angelika Cathor on Discord or here on meetup.com

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 **Cafe Cinema** 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 be the main group in the alley \- look for Magda or Nick and we will help\!

Join Us for a Morning Swim at Humboldthain Outdoor Pool! Hey everyone, We are doing another relaxed swim meet-up at Humboldthain outdoor swimming pool, and I'd love for you to join! We'll be gathering for a casual 30-minute swim - nothing competitive, just a chance to enjoy the water and start the day on a refreshing note. Afterwards, if you're up for it, we can go to a nearby cafe for a coffee and chat, but no pressure - totally optional! 📝 **Bring** - ID/passport (mandatory, checked by the pool staff) !!! - swimsuit - towel - 1 Euro coin (for a locker) - ticket is around €5.50 (buy online or at the pool) **RSVP** Please un-RSVP ❌ if you cannot come! Otherwise we would unnecessarily wait for people to never show up. 📍**Where** At the pool entrance (see the map pin) and wait for 15 min for people to gather. You need to enter Humboldthain park. 🎟 **Pool tickets** [https://www.berlinerbaeder.de/baeder/detail/sommerbad-humboldthain/](https://www.berlinerbaeder.de/baeder/detail/sommerbad-humboldthain/) ☕ **Coffee** A wonderful coffee shop a few minutes away from the pool [https://maps.app.goo.gl/os3WHTSfYzbDyKQh7?g_st=ac](https://maps.app.goo.gl/os3WHTSfYzbDyKQh7?g_st=ac) Looking forward to seeing you there!

[*Registration form required below*] **Interested in Japanese sword fighting or Japanese culture? Come join a trial and experience the traditional Samurai art at Katori Shintō-ryū in Schöneberg.** **Trial Fee**: **25€**/ session (2hr). Classes every Monday, Wednesday and Friday from 19:00 to 21:00. **!!SIGN UP HERE**: [Katori Shinto-ryū Berlin Sign-up (google.com)](https://docs.google.com/forms/d/e/1FAIpQLSeBt4A13VgnEcgQQ2PDaruthmYMRWineG4KtUCKsuC9KBsCUQ/viewform) Registration is required before your participation so that we can prepare enough training equipment. **Address**: Belziger Str. 25, 10823 Berlin. **No previous experience required!** The classes are in English and German. **Our website**: [Kenjutsu Berlin - Official school of Katori Shinto-ryu in Berlin (katoriberlin.org)](https://katoriberlin.org/) **Katori Shintō-ryū** is one of the oldest Japanese sword fighting traditions (koryū) still practised today and is recognized by the Japanese government as a cultural intangeable asset. The school was founded in the middle of the 15th century by Iizasa Chōisai Ienao at the Katori Shrine (Katori jingū) and has become the origin of numerous other martial arts schools over the course of its almost 600-year history. The training consists of the continuous repetition of fixed sequences of movements (kata) and includes the use of classic Japanese weapons such as the sword (iai-jutsu, battō-jutsu, ken-jutsu, ryōtō-jutsu, kodachi-jutsu), the long staff (bō-jutsu), the lance (naginata-jutsu) and the spear (sō-jutsu), as well as unarmed disciplines, tactics and spiritual aspects. **The Katori Berlin dojo** is the only official shibu of Otake Nobutoshi-shihan’s dojo Shinbukan in Germany and fully dedicated to the transmission and study of one martial tradition: Tenshinshō-den Katori Shintō-ryū. Through these efforts we aim to contribute to the cultural preservation of this martial tradition. The dojo has one officially appointed shidosha. **Our sensei**: Sebastian Graetz has been active in martial arts since 1997. After almost 15 years of taekwondo in Berlin, he started with Katori Shintō-ryū in Asia in 2014. Since then, he has studied in Japan with Ōtake Risuke-shihan and Ōtake Nobutoshi-shihan, and in Vietnam with Malte Stokhof-shihandai. In 2023, he received his Menkyo license and permission to set up a training group in Berlin the following year.

Welcome to Sunday Tech Coffee. This is a **networking** event for those in the tech industry in Berlin. We are usually inside and to the right. Ask the barista/bartender if you can't find us.

Im Jungfernheideweg 77, 13629 Berlin treffen wir uns zwischen 16.30 Uhr und 22.30 Uhr wieder um gemeinsam Brett- und Gesellschaftsspiele zu daddeln. Das Angebot richtet sich an alle Interessierten. Kinder bitte erst ab 12 Jahre. Eine Vielzahl toller Brettspiele sind vor Ort, es können aber auch gerne eigene mitgebracht werden. PS: Es wäre sehr hilfreich wenn die Leute, die sich anmelden und dann doch nicht können, sich auch wieder abmelden vorher. danke schön

AKRO YOGA OPEN JAM Partner-Akrobatik im Offenen Wohnzimmer - Offene Jam Du möchtest deine neu gelernten Flows und Figuren aus der Partnerakrobatik mit anderen Menschen ausprobieren? Dann bist du hier genau richtig. Wir wollen gemeinsam einen Raum schaffen, in dem wir gemeinsam an unseren Flows arbeiten und kreativ experimentieren können. Nach einem gemeinsamen Warm Up wird frei ausprobiert, um am Ende bei einem gemeinsamen Cool Down wieder zusammen zu kommen. Du kannst gerne alleine kommen, es wird genug potentielle Partner\*innen vor Ort geben. Du brauchst: Bequeme, eng anliegende Kleidung, etwas zu trinken. Matten sind vor Ort. \*\*\*\* Anmeldung erforderlich : melde dich bitte an unter [akro@filua.de](mailto:akro@filua.de)

Join us for a brunch with ambitious, driven people who want more than small talk. This meetup is for people who enjoy ideas, but value action even more — people who appreciate honest conversation, challenging perspectives, and being around others who want to build, improve, and make things happen. As Grant Cardone said, “No commitment equals no results.” We take that seriously here: commitment matters. **Please read before RSVPing:** * RSVP “yes” only if you genuinely plan to attend. * If your plans change, update your RSVP *at least 24 hours in advance* so someone else can take the spot. * Members who no-show, or cancel less than 24 hours before the event, will be blocked from future events. * As we are meeting on a busy Saturday morning, please be respectful of the café and plan for a minimum spend of 10 EUR per person.

Let’s celebrate four years of Filmmakers & Movie Nerds with a potluck picnic, karaoke, music, and a proper Movie Nerds party! We’ll start at Tempelhofer Feld with a community potluck. Bring something to share: homemade food, snacks, drinks, or whatever feels easy. Nothing fancy needed. Just something for the improvised table, think hummus, tapas, finger food, sausages, cake, muffins, ... The idea is simple: eat together, meet people, exchange, hang out, and celebrate the community we’ve built. Later, we move to Engels for screenings, karaoke, [Daniel on the decks](https://soundcloud.com/acado_musik/acado-sisyphos), drinks, and beautiful Movie Nerds chaos. **Expect:** 1. Potluck picnic 2. Food and drinks to share 3. Filmmakers hanging out 4. Movie Nerds screening loops 5. Karaoke 6. DJing 7. A full day of community **Schedule:** 15:00: Potluck picnic at Tempelhofer Feld 20:00: Engels opens 22:00: Karaoke 23:00: DJ starts 03:00: Stumbling home with a smile on your face **Locations:** We start at [Tempelhofer Feld](https://maps.app.goo.gl/d8SS2pzGvEhiWybXA), close to the east entrance Later, we move to Engels. If the weather is bad, we go directly to [Café Engels](https://maps.app.goo.gl/mfgNm7XDMt1W84i77). **Who is this for?** Filmmakers, actors, writers, editors, producers, cinematographers, creatives, Movie Nerds, friends, and anyone who wants to be part of an active filmmaking community. You don’t need to know everyone. You don’t need to bring a finished film. Just bring something to share and come celebrate with us. Stop waiting – start celebrating!

Interested? Contact Preston Moore k.preston.moore@gmail.com 614-300-5989 ———————————— Engaging in men’s work is the new way to forge friendships while being open-minded to personal growth. Many men experience healthier relationships, personally and professionally, by engaging in this work. Open Men’s Group is a container for men to share vulnerably without receiving judgment or feedback. We believe that emotionally mature, powerful, compassionate, and purpose-driven men will help heal some of society’s deepest wounds. We support the powerful brilliance of men and we are willing to look at, and take full responsibility for, the pain we are also capable of creating – and suffering. We care deeply about men, our families, communities, and the planet. Visit ManKind Project USA to discover more. https://mkpusa.org/

We are a real world Martial arts group. \ Called DO JUNG ISHU (the art of fighting) \ Based off of Jeet kune do we just continued where Bruce Lee left off. \ We have been around a while. \ Every week we get together and work technical skills and full contact spar. \ Almost all of the instructors have been in everything from street fights to the ring and some still compete in cage fighting. \ If you want to take your skills up, improve your confidence, gain self defense skills, get in better shape, test yourself or just want to kill some time and possibly get hit a bit come on down. \ We will be located at 3923 N High St, Columbus, OH 43214 Outside in the grass between the playground and horseshoe area. our instructors are normally in a black and red art of fighting shirt \ if you can not find us call or text me at 6143570295 Saturday 1:30pm Wednesday 5:45pm From Age 16 and up. attendees under the age of 18 must have a guardian with them. \ Wear workout clothes. \ Bring a MOUTHPIECE! \ WE HAVE GLOVES. \ $10 per class $5 per class if you are wearing a club shirt Club shirts are $25 Hope to see you soon. \ let me know if you have any questions :)

Some trained COUNT volunteers work together once a month at RMH (http://www.rmhc-centralohio.org/volunteer.php) as Housewarmers (usually on the 1st Sunday from 1 – 5 PM). Some schedule other shifts at their convenience. You may try this out with less fuss by following a "Fast track" or go through the normal process. Fast track • Arrange a time to shadow a COUNT volunteer. Call Dave Nohle at 614-268-9558 (cell). • Show up and try it out. • Complete application, etc. later. Normal process • Complete an online application (http://rmhc-centralohio.org/volunteer/). • Attend orientation in advance. • At orientation you will complete forms agreeing to keep family/patient info private and allowing a background check and tour the facility. • Complete one training shift. Daily shifts are: morning 9 AM - 1 PM, afternoon 1 - 5 PM and evening 5 - 9 PM. • Schedule shifts online using the on the RMH scheduling system (http://www.volgistics.com/ex/portal.dll/?FROM=32895). The Ronald McDonald House (RMH) provides housing and meals for families with sick children. The Columbus RMH is the largest in the world with 137 rooms. COUNT has been volunteering there since May 2014. Housewarmers work with RMH guests to provide a home-like environment - greet, assist with family needs, answer phones, give tours, assist with checkin/checkout, prepare guest rooms after checkout, clean facility, laundry, restock supplies and staff the front desk. RMH Housewarmers volunteer at least one four-hour shift a month. All Housewarmers must complete an application and agree to a background check before they can be full fledged volunteers.

We are a real world Martial arts group. \ Called DO JUNG ISHU (the art of fighting) \ Based off of Jeet kune do we just continued where Bruce Lee left off. \ We have been around a while. \ Every week we get together and work technical skills and full contact spar. \ Almost all of the instructors have been in everything from street fights to the ring and some still compete in cage fighting. \ If you want to take your skills up, improve your confidence, gain self defense skills, get in better shape, test yourself or just want to kill some time and possibly get hit a bit come on down. \ We will be located at 3923 N High St, Columbus, OH 43214 Outside in the grass between the playground and horseshoe area. our instructors are normally in a black and red art of fighting shirt \ if you can not find us call or text me at 6143570295 Saturday 1:30pm Wednesday 5:45pm From Age 16 and up. attendees under the age of 18 must have a guardian with them. \ Wear workout clothes. \ Bring a MOUTHPIECE! \ WE HAVE GLOVES. \ $10 per class $5 per class if you are wearing a club shirt Club shirts are $25 Hope to see you soon. \ let me know if you have any questions :)

Open Shelter has teamed up again with Red White and Boom! Friday, July 3rd & we are looking for volunteers to run the event’s alcohol booths. Proceeds from sales go to the Open Shelter’s organization. There are two available shifts: 12-6p & 5-11p. There will be an ipad-like device to process transactions in addition to cash. Everything will be in bottles or cans, so transactions should be very easy. Must be 21+. There are multiple beverage stations along the Civic Center Bridge. The stations are covered and also have beverage trucks next to them, so volunteers can cool off in the trucks. As far as parking, it is suggested those who are coming from the east use the Columbus Commons Garage, and those from the west use the Belle Street Garage. Harry from the Open Shelter will be your contact. (614)562-2169 mailto:harry@theopenshelter.org More information about the event: https://redwhiteandboom.org/ More information about the organization: https://theopenshelter.org/

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.