C#

**The TypeScript Berlin meetup is back!** After a long break, we're reviving the meetups for 2026 and we'd love to see you there. Whether you've joined us before or you're coming for the first time, welcome! Come round for talks, snacks, good conversations, and a chance to connect with other TypeScript devs in Berlin. *** **🎙️ Interested in speaking?** We have an ongoing call for speakers for this event as well as future ones. [Fill it out here](https://tally.so/r/jaGa1J). *** **📅 Schedule** * 18:30 - Doors open, drinks and snacks 🍕 * 19:00 – Welcome 🤝 * 19:05 - Talk 1: "**Type-Driven Architecture: Stop Validating, Start Designing**" by [Mahesh Haldar](http://in.linkedin.com/in/haldarmahesh) 🎙 * 19:35 - Talk 2: "**Soundness holes in TypeScript’s type system**" by [Alexey Orlenko](https://www.linkedin.com/in/oleksiiorlenko/) 🎙 * 19:50 - Break 🥤 * 20:05 - Talk 3: "**Prisma Next: AI-Native, Graph Migrations, Extensions & Middleware**" by [Will Madden](https://www.linkedin.com/in/willmadden/) 🎙 * 20:35 - Talk 4: "**Prisma Next Performance**" by [Serhii Tatarintsev](https://www.linkedin.com/in/sevinf/) 🎙 * 20:50 - Wrap-up * 21:00 - Doors close 👋 *** This meetup is organised by [Prisma](https://www.prisma.io/). By attending the event, you agree to abide by our [Code of Conduct](https://www.prisma.io/event-code-of-conduct). For questions, reach out to events@prisma.io

While we are approaching the middle of the year and KotlinConf is just over - we are thrilled that Trade Republic hosts us again! So mark the date! **Line-Up:** 👉 **Lists, Sequences, and Flows: Scaling Data Processing in Kotlin without Melting Your Memory.** *by Daniela Valero* In this talk, Daniela shares her journey of meeting a major backend deadline while managing a data pipeline's memory footprint. You’ll learn how to transition from eager List operations to lazy Kotlin Sequences and jOOQ Streams (using database fetchSize chunking) to keep memory usage flat. Finally, we’ll explore using Kotlin Coroutines and Flow to introduce safe concurrency so your data processes quickly without straining your database. 👉 **The show must go on** Kotlin-based Kafka dead-lettering solution without external (system) dependencies *by Blagoja "Baki" Stamatovski* **👉 Job Market Insights from a Kotlin developer** *by* Ivan Gafurov **Speaker Bios:** 🗣 **TDB**

Welcome to our cosy Godot Engine Community Meetup! 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! 🦜 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 [Saftladen Game Collective](https://saftladen.berlin), Normannenstraße 1-2, 10367 Berlin-Lichtenberg. 🌳 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/)! 🕊️

The Language Café is primarily aimed at people who are struggling with their mental health which can make it hard to go to regular courses. We want to create a safe space for everyone to learn and practise without pressure. Everyone is welcome! Please try to be on time so we can all get started together :) We mainly practise on a beginner/lower intermediate level and adapt to everyone's prior level of German. The Language Café will focus on teaching you the most important words and phrases and basic grammar in German. The content of the course is adapted to real life. (everyday life in Germany, dealing with authorities, etc.) We will cover different topics every week and you can join us anytime, since the topics do not necessarily build on each other. The Sprachcafé is for free. \*If you cannot make it please cancel your participation so someone else from the waiting list can join, thank you!\* \| \| \| \|

Hey fellow Dragons! ++++++++ Interested in Chinese/German? ++++++++ Learning Chinese/German and need to practice or find language-tandem partners? Interested in cultural exchange? Want to meet awesome internationals? …Or just want to get tips on where to find good Chinese food in Berlin? Whatever the reason, come join us! The more the merrier: such is the Chinese way! ++++++++++++++++ New Website ++++++++++++++++ We have our own community website now. It's hosted in Germany with better privacy guidelines and allows us to have more features than we currently have here. https://www.dragon-descendants.de/ Please think about registering there too and if you are awesome, use the RSVP function there too. In the long run we do plan to migrate permanently to the new site. ++++++++++++++++ Our meetup structure ++++++++++++++++ Our meetup is relatively unstructured. Groups often form organically and evolve and move throughout the evening consisting of members learning Chinese/German, members who are fluent/native, and the rest who are here to socialize in whatever language they're comfortable with and jumping into whichever conversation they find themselves in. We try our best to fulfil everyone's expectations so we can all benefit from the meetup and have a good time; if you have any suggestions or ideas (such as outings!) please don't hesitate to let us know! :) +++ No time on Thursday's? +++ We meet every second Thursday, but we sometimes have other events, which are not regular and occur on different days/at different locations. Stay tuned for announcements! Looking forward to seeing old friends and making new ones :) Cheers & 回头见 Yimu & Xuedi

Join us for a casual Product Round in Neukölln — a relaxed evening for product people who enjoy meaningful conversations and a user-first mindset. 🗓 When? Every last Thursday of the month (Join the Discord channel to get 🔔 reminders and 📍 location updates: [https://discord.gg/6cKgFKXY4f](https://discord.gg/6cKgFKXY4f) Currently moving there to keep the community and events free and accessible for everyone.) 👋 Who it’s for • Designers (UX / UI) • PMs & POs • Developers & Engineers • Researchers • Aspiring product people 💬 What to expect • Casual conversations about real product work • Sharing experiences, challenges, and learnings • Getting to know other product people in Berlin • No talks, no presentations, no pressure • Just drinks, chats, and good company 🚫 Please note This is a no-sales, no-pitch, no-dating space. The goal is simple: connect, exchange, and enjoy the conversation. If you care about building products with users in mind and want to meet like-minded people — this is for you. See you there! 😊 Phil

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 Thursday we have Bachata dance classes in Berlin - we are usually a group of around 20 people (95% beginners): 🕖 19:00 class: Beginners-+ Bachata Technique (0-1+ years experience) • No partner needed - we switch (for couples: partner rotation is optional). • You can start from zero in any of these classes! 📍 Adress: Jakob-Mierscheid-Steg ([Google Maps Link](https://maps.app.goo.gl/pjXopSSqAt55FQGW9)) - near S+U Hauptbahnhof We are down by the river. • Price: 12€ per class (10er-card = 100€). ✅ 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 Donnerstag findet dieser Bachata Tanzkurs statt - wir sind meistens eine Gruppe von 20+ Leuten (95% Anfänger): 🕖 19 Uhr Kurs: Anfänger-+ Bachata Technik (0-1+ Jahre Erfahrung) • Kein Partner nötig - wir wechseln (für Paare ist der Partner-Wechsel optional). • Du kannst in diesen Kursen jederzeit von null starten! 📍 Adresse: Jakob-Mierscheid-Steg ([Google Maps Link](https://maps.app.goo.gl/pjXopSSqAt55FQGW9)) - Nähe S+U Hauptbahnhof Wir sind unten am Wasser. • Preis: 12€ je Kurs (10er-Karte = 100€). ✅ 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 ❤ Bachata Classes Berlin

**Rust Berlin Talks** is back for another evening of talks, shared ideas, and networking. Join us to learn, share, ask, and connect. If you work with Rust professionally, use it in side projects, contribute to open source, or are simply curious to learn more, you are very welcome. **Agenda** * Doors open: 18:30 * Start: 19:00 * Talks * Open mic / lightning talks * Networking **Speakers** Egor Lebedev - Welcome and a short note from the RustRover team Wolf Vollprecht - Pixi - A cross-platform package manager written in Rust Florian Gilcher - LLM Policies **Speaker Bios** Wolf Vollprecht is the founder and CEO of prefix.dev, where he builds open-source software supply chain infrastructure for the conda ecosystems. Core projects include Pixi (a cross-platform package manager written in Rust), rattler (crates to work with Conda packages), and rattler-build. With \~7 years in the conda ecosystem, including creating Mamba during his time at QuantStack, Wolf has a lot of experience in making package management fast, reproducible, and secure. Florian Gilcher used to be part of the Rust team in several positions and served as a member of the Rust Foundation board. He is also a co-founder of the Rust Berlin meetup. Today, he’s training Rust at Ferrous Systems, a company he co-founded. **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!

Du möchtest dein Deutsch (Niveau **B1** bis **C1**) 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. Voraussetzung: mindestens solide Grundkenntnisse (B1) Die Veranstaltung ist kostenfrei! Wir freuen uns auf dich! 🌍

**18:00!** 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/61](https://volley.berlin/61) 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)

This is a 5 phase meetup. You can come at any time. 1.) 6:45 -7:00 p.m.: Gathering at the meeting spot (see gmaps link!) 2.) 7:00 - 7:30 p.m.: Walk & Talk to the Kerb food court. 3.) 7:30 - 10:00 p.m.: Immerse conversations in the Kerb food court. 4.) 10:00 -10:30 p.m,: Public transport to Tempelhofer Hafen. 5.) 10:50 - 11:00 p.m.: Fireworks at Tempelhofer Hafen (free!) 🪑: Reserved tables for the meetup. **1.) How to the find Quartier 205 Stadtmitte:** [https://goo.gl/maps/6Fhft3LbPhcEsQrdA](https://goo.gl/maps/6Fhft3LbPhcEsQrdA) The exact meeting spot can be seen in the photo below! We meet on the 1st floor where the trash sculpture can be seen. Look for a meetup sign or organizer wearing a black or red lanyard with "staff" written on it. **2.) Walk & Talk to the Kerb food court** The best part. In order to extend the walk we'll stroll along Checkpoint Charlie and from there to the former Sony Center where we are going to enter the Kerb food court. **3\. How to find the Kerb food court** [https://maps.app.goo.gl/xJTQg9oBoGL67syz7](https://maps.app.goo.gl/xJTQg9oBoGL67syz7) Kerb is located at the former Sony Center. The new flagship food court of Potsdamer Platz. Most likely we will be sitting upstairs on the first floor next to the bar (take the stairs to the left). ***Best ways to get there:*** 1\. U2 \(subway\): Get off at Potsdamer Platz and walk around 7 min to Kerb. 2\. Bus M41 or M85 Get off at Potsdamer Platz and walk 5 min to Kerb. 4.) Public transport to Tempelhofer Hafen 5.) Watching the fireworks of the harbor festival! 🎆 *Who is this meetup for:* 1\. Asians who want to practice German and/or English\. 2\. German speaking individuals who are studying \(preferably\) Japanese\, Korean\, Mandarin or Cantonese\. 3\. Anyone who is interested in cultural exchange and wants to socialize\. *What you can expect:* 1\. A professionally organized meetup that can adapt to any changes given the current situation\. 2\. A collaborating venue where you can further socialize with other members\. *important: This event is held at the same time and meeting location like the "Networking & Language Exchange - 🍖international🍻" one. So I'm basically organizing 2 events at the same time which means that you can expect way more people than on the list.* *** Whenever you attend a meetup, the most common as well as first question you get is: "Where are you from?" You probably heard this question a million times. Well, at least I did. From my own experience of attending over 200 international meetups in various countries such as Germany, Japan, Australia and Thailand, I can tell you that asking for the name is a better approach. “A person’s name is to that person, the sweetest, most important sound in any language.” - Dale Carnegie If you really want to connect with like-minded people you should remember their name, but you don't have to remember every persons name you've talked you. Be picky about that, don't be me who can somehow remember everyones name easily. Don't tell yourself sth. like "I'm bad at remembering names." It's all about developing the habit of asking for a name and keep the conversation going on. Furthermore, you want to learn German or any other language. Learning the local language is crucial to connect with the locals and developing a true friendship. This can be accomplished with immersion. My goal is to inspire you to go out of your comfort zone and improve yourself each time you join this meetup.

* German below -
Please bring clean indoor shoes with you to the location <3 The event fee varies between 5 to 10 Euros. 

Hey You!
On Friday I will teach you a few basic steps of shuffling. We will break down the steps, in your time, in your style.
We will explore your own flow of your body to different kinds of music and how we can use it in shuffling. I want to create a safe space for everyone who is just starting their shuffle journey or is already on the path. 

Address:
Milastraße 4
10437 Berlin
“Aziza-tanzt Tanzschule” 

Hallo Du!
Diesen Freitag möchte ich Dir ein paar Basic-Schritte vom Shufflen zeigen. Wir werden die Schritte langsam durchgehen, in deiner Zeit, in deinem Tempo.
Wir werden den eigenen Flow entdecken und wie Du deinen Körper zu verschiedner Musik im Shufflen integrieren kannst.
Ich möchte für jede Person einen Safe-Space erschaffen, egal ob Du ganz Neu bist oder schon etwas gelernt hast. 

Adresse:
Milastraße 4
10437 Berlin
“Aziza-tanzt Tanzschule”

**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** Like it or not, AI agents are now capable of turning a quickly written paragraph of requirements into a pull request that is ready to be integrated into real-world production applications and it's now our responsibility to make sure AI doesn't go rogue and take down prod - or corrupt our data by misunderstanding the requirements or our existing schemas. In this session we'll explore strategies to protect our codebases through unit and integration testing, documentation, and code review along with additional ways of providing context and guard rails to our AI agents as they carry out the work we've assigned them to do. By the time we're done, you'll have a firm grasp of the problem and understand some helpful options for protecting your codebase from vibe coding mishaps getting YOLOed into prod. **YouTube Link** https://youtube.com/live/BltmWMH1zG0?feature=share

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

PLEASE NOTE!!! This event will be In-Person for our very 1st Improving collab! If you know the [Columbus Unity group](https://www.meetup.com/columbus-unity-user-group/) location, we'll be at the same place. This is our 1st event and are doing a soft launch with limited attendance. 1st come 1st serve. If you want to be there and we fill up, please email me at [info@thecogg.com](mailto:info@thecogg.com) and I'll be in touch. All street parking is free on Sundays but you can also pay to park in any of the local garages. See image of [parking map here](https://drive.google.com/file/d/1Mr9_LFIggbs-0_Zd3AJTGNqEhgMf2TzQ/view?usp=sharing). \-\-\- On the last Sunday of the month, we're having our usual end-of-the-month social gathering with our GameDev Meetup meeting. There will be announcements and presentations followed by some social networking Let's continue the conversations with good vibes and friends. All are welcomed from all ages and backgrounds to this public event. If we can, we'll be streaming or uploading the video later via our COGG YouTube channel here: [https://www.youtube.com/@TheCOGG/streams](https://www.youtube.com/@TheCOGG/streams) (Also please do subscribe if you have not done so!) No game development experience required! If you are interested in doing a 20 minute game development related presentation, please fill out our form online here: [https://goo.gl/forms/lVdTJZiNJewlPJuj1](https://goo.gl/forms/lVdTJZiNJewlPJuj1) Or e-mail us at info@thecogg.com with the following: Your Name, Company/Affiliation, Name of Your Game/Topic, Description, Tech Needs, and Your Contact. Be sure to check out our Discord for real time news updates: [https://discord.gg/NrBhuNQ](https://discord.gg/NrBhuNQ)

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)