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Yes! Check out c# events happening today here. These are in-person gatherings where you can meet fellow enthusiasts and participate in activities right now.
Discover all the c# events taking place this week here. Plan ahead and join exciting meetups throughout the week.
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C# Events Today
Join in-person C# events happening right now
FreeCodeCamp Berlin: Co-Learning & Co-Working
**Chat & Updates:**
Telegram: [https://t.me/+VfHrJXPGVWLflGhz](https://t.me/+VfHrJXPGVWLflGhz)
Discord: [https://discord.gg/SVb44D9](https://discord.gg/SVb44D9)
**\*Deutscher Text unten\***
**Come & go as it fits your schedule**
We are meeting in-person and online every week. We offer an office environment for self-study, work and presentation/discussion (lightning talks).
**Schedule:**
* 10am open doors
* 10am online video conference open [https://meet.in-berlin.de/fcc](https://meet.in-berlin.de/fcc)
* optional, afternoon, around 1pm: 1h presentation session (if requested / offered)
* 6pm or extended open-end
**Open co-working / co-learning**
work on the FreeCodeCamp curriculum or your own project. Vibe inside but vape outside.
**Mutual exchange**
and support is welcome. English and German, as needed.
We have fast internet, chocolate bars, drinks and a nice atmosphere. :-)
**Personal Consultation / Career advice**
Bodo runs this meetup for many years. As a Senior Dev/DevOp he is open to giving guidance for your questions about career development.
Book a free appointment (up to 60min) with him here: [https://calendar.app.google/yoZfVZR4D9zwt5in7](https://calendar.app.google/yoZfVZR4D9zwt5in7)
**Code presentations on the projector**
Everybody can participate. Show your code and present your project/problem. Get feedback or help and let others learn from you!
You don't have to prepare a fancy presentation, show us what you're working on. Also in English or German, as you feel more comfortable.
**Komm und gehe jederzeit. Zeitplan:**
* 10:00 Uhr Öffnung vor Ort
* 10:00 Uhr online room [https://meet.in-berlin.de/fcc](https://meet.in-berlin.de/fcc)
* Nachmittag, ca 13 Uhr: optional 1 Std. Präsentation / Gruppen-Diskussion (nach Angebot/Bedarf)
* 18:00 bzw. länger, open-end
**Präsentationsrunde**
nach Bedarf und Angebot am Nachmittag. Dort man kurz zeigen, woran man gerade arbeitet, eventuell Hilfe bekommen oder interessante Tool vorstellen.
Du musst keine große Präsentation vorbereiten.
Ebenfalls auf Englisch oder Deutsch, wie Du Dich wohl fühlst.
**Gegenseitiger Austausch**
und Unterstützung sind willkommen. Es wird Englisch und Deutsch gesprochen.
**Persönliche Beratung / Karriereempfehlung**
Bodo veranstaltet dieses Meetup seit vielen Jahren. Als Senior Dev/DevOp gibt er Dir auch persönliche Ratschläge für Karriere im 1:1 Gespräch.
Reserviere Deinen kostenfreien Online-Videocall (bis zu 60min) hier: [https://calendar.app.google/yoZfVZR4D9zwt5in7](https://calendar.app.google/yoZfVZR4D9zwt5in7)
**Tech & Buzz:**
Claude Code, nodeJS, npm, nvm, TypeScript, JavaScript, Bootstrap, Tailwind, Bulma, React, Angular, NextJS, Vue, Nuxt, Docker, Container, Virtualization, Django, Codex, LLM, vibe coding, static site generation, OAuth2, Simple SAML, UX, UI, CMS, markdown, Hugo, Netlify, freeCodeCamp, Udemy, Community, Frontend Masters, Backend, SQL, noSQL, MySQL, Python, Linux, Development, git, Version Control, HTML, CSS, Open Source, Responsive Web design, Relational Database, API, Data Science, Machine Learning, Infosec, Cybersecurity, Big Data, AI, Artificial Intelligence, ChatGPT, Stable Diffusion, Data Structures, Data Mining, Ethical Hacking, OSI, Network Security, Julia, Deno, Test driven development, CI, continuous delivery, Deployment Pipe, Bash, devOps, Gitlab, GitHub, Jira, Cloud Computing, Azure, AWS, Apache Server, SSH, Algorithm optimization, SEO, C/C++, Mobile Apps, Apple iPhone, mac OS, Firefox, Chrome, Android, Programming Languages, Cryptography, Patching, Blockchain, DApp, Solidity, Analytics, geek, nerd, Neural Network, MongoDB, ExpressJS, Flutter, Go Lang, AJAX, OOP, UML Diagram, Computer Science, Engineering, Modell, View, Controller, Requirements, risks analysis, PKI, SSL, PGP Certs
regular NixOS Meetup @c-base
We are back in the c-base!
Do you already run NixOS and want to talk to other people or want an introductory session with some NixOS users. Just bring your machine!
Usually there are no topics, we just sit in front of our computers, talk about stuff, debug some problems or review some PRs on nixpkgs.
There are drinks usually available from the c-base bar.
If you can't find us. just ask around or ask in irc (#krebs on hackint)
Offener Deutschunterricht - Text & Konversation - Niveau B2+ (Fortgeschritten)
In diesem Kurs beschäftigen wir uns mit verschiedenen Texten aus unterschiedlichen Bereichen. Das können u.a. kurze Geschichten, Gedichte, Zeitungsartikel, Kolumnen oder Videos sein. Immer sind es Themen, die uns gefallen, die wir besonders interessant, wichtig oder manchmal auch richtig schlecht finden. Gemeinsam versuchen wir die Position der Autor*in, den Stil und die Argumentationsstruktur zu verstehen. Dazu diskutieren wir über das, was wir verstehen, welche Meinung wir zu dem Thema haben oder welche Fragen offen bleiben.
Gerne könnt ihr uns auch Themenvorschläge mitbringen oder zuschicken.
Der Kurs richtet sich an interessierte Menschen mit einem B2-Niveau (oder so ähnlich), die Lust haben sich weiter mit der deutschen Sprache zu beschäftigen und ihren Wortschatz zu erweitern.
Die Termine sind sporadisch.
AWS Women's User Group Berlin: June Event - AI Agents in Production
**The AWS Women’s User Group Berlin** is thrilled to invite you to our upcoming meetup sponsored by Storm Reply focused on **Building production-ready AI agents for real-world impact.**
Join us for a deep dive into how to build, observe, and evaluate AI agents at scale. You’ll also see how these ideas come to life in a real-world climate-smart agriculture solution that turns weather forecasts into actionable field guidance. Whether you’re building agentic systems today or planning what comes next, this meetup will give you practical insights into making AI agents work in production.
**Speaker Info**
**Keynote Talk**
**Speaker:** Tetiana Senna
**Position:** Team Lead / Senior Project Manager, Storm Reply
**Talk Title:** Trust, but Verify: Observability and Evaluations for AWS Agents
**Abstract:** Getting an AI agent to work in a demo is easy. Knowing whether it still works in production - after the next prompt change, the next model upgrade, the next edge case - is the hard part. Unit tests don't cover non-deterministic behavior, and manually reviewing a handful of runs doesn't scale.
This talk walks through the two practices that close that gap: observability (understanding what actually happened inside your agent) and evaluation (deciding whether the outcome was any good). We'll dig into Amazon Bedrock AgentCore's Observability and Evaluations capabilities, compare the proven evaluation approaches - built-in LLM-as-a-Judge evaluators for automatic quality monitoring, and custom evaluators for business-specific correctness checks - with a candid look at what each one is good for, where it falls short, and what it costs to run at scale. We'll also take a close look at AgentCore Optimization, AWS's newly previewed feature in this space.
**Applied Agentic AI Talk**
**Speakers:**
**Vidhu Mitra Malladi:** Senior Software Engineer, Yara Digital Farming
**Chamika Hasanthi:** Senior Software Engineer, Yara Digital Farming
**Talk Title:** Weather Risk Intelligence Agent for farmers & Agronomist
Abstract: Unpredictable weather events — heavy rainfall, drought, frost, and heatwaves pose significant risk to crop yield and fertilizer efficiency. While forecast data is widely available, it is rarely translated into timely; field-level guidance farmers can act upon.
Using AWS AgentCore framework and AI capabilities, we can turn weather predictions into clear agronomic actions, supporting climate-smart agriculture at scale.
**You'l learn:**
* Implementation of the solution using AWS Agent Core framework
* Architecture of the project.
🗓️ **Event Details:**
\- Date: Tuesday\, June 30th
\- Venue: Storm Reply GmbH\, [address](https://www.google.com/maps/place/Storm+Reply+GmbH/@52.5012692,13.368852,17z/data=!3m1!4b1!4m6!3m5!1s0x47a851119af460c5:0x35e34ba578e8b1ec!8m2!3d52.5012692!4d13.368852!16s%2Fg%2F11gg9298pv?entry=ttu&g_ep=EgoyMDI2MDUxNy4wIKXMDSoASAFQAw%3D%3D)
\- Time: 06:00 PM \- 9:00 PM
Doors open at 6:00 PM
Food & drinks will be provided.
📋 **Program Schedule:**
**18:00** \- Registration and Welcome Networking
**18:20** \- AWS Women's User Group Welcome
**18:30** \- "Trust\, but Verify: Observability and Evaluations for AWS Agents"
**Speaker:** Tetiana Senna, Team Lead / Senior Project Manager, Storm Reply
A practical session for anyone working with AI agents on AWS who wants the confidence to put them in front of real users. You'll leave with a clear framework for monitoring agents in production and a concrete approach to evaluating their behavior over time.
**19:15 - 19:30** Break
**19:30** \- "Weather Risk Intelligence Agent for farmers & Agronomist"
**Speakers:** Vidhu Mitra Malladi, Senior Software Engineer, Yara Digital Farming & Chamika Hasanthi, Senior Software Engineer, Yara Digital Farming
Discover how AI agents can transform weather forecasts into actionable, field-level farming guidance.
**20:10** \- Q&A and closing remarks
**20:15 - 21:00** Networking, food & drinks
🎟️ **RSVP**
Don't miss this excellent opportunity to connect with Tetiana, Vidhu, the AWS WUG Team and a thriving community of cloud enthusiasts and professionals. Secure your spot by RSVPing now! Seats are limited!
Please note that this user group is specifically for WOMEN and FLINTA\* (female, lesbian, inter, trans\*, non-binary, and agender) only. Please also check out the AWS User Group Berlin.
\*\*\*\*\*\*
🚨Attention🚨
This meetup is hosted at Storm Reply GmbH and attendees must be registered to go through building security.
Make sure you bring an ID card with you, and you register the event with a valid name that matches to your ID.
Media and Consent: We inform all attendees that photographs and videos will be taken during the meetup and will only be used by the event organizers for documentation and promotional purposes. By RSVPing to this event you are consenting to our media policy. Please let the organizers know if you do not want to be in the pictures/videos.
Thank you very much for your cooperation!
\*\*
The AWS Women’s User Group is the very first official women-centric AWS User Group in DACH and EMEA. This group serves as a secure and supportive platform for women who want to share their AWS knowledge, passion for cloud computing and advance their career through targeted learning opportunities.
We extend a warm invitation to FLINTA individuals who are interested in being part of our User Group.
Code of Conduct:
At the AWS Women's User Group in Berlin, we have a strong and unequivocal code of conduct in place to create a safe and empowering environment for all.
Design and Animation (2D/3D) Meetup Berlin
It's all about getting to know new people from your favorite industry.
So if you are interested in Motion Design, 2D or 3D Animation, CGI, Illustration or any related field, feel free to join us. Grab a beer in a relaxed atmosphere, have a nice chat about key frames or discuss your next project!
Beginner or expert – wir freuen uns auf dich!
Free Trial Class: Salsa (Casino) II
### **Casino II (A) 💃🕺**
**🕠 5:30–6:30 PM**
**📍 SaloNeo (Hagenauerstr. 11)**
**🌤️ When the weather is good (warm enough, no rain), we will dance outdoors:**
**👉 [https://maps.app.goo.gl/dey5G3RmseJAXnP4A](https://maps.app.goo.gl/dey5G3RmseJAXnP4A)**
**[acEw0w](https://book.stripe.com/4gMaEQ9Lwa3V0ZP91acEw0w)**
**In this course, we will build on and review the topics from your Salsa Beginner classes.**
**You should have already participated in one of our beginner courses or another basic Salsa Cubana (Casino) course.**
**We will start exploring more complex movements and figures, while staying true to our philosophy:**
**It’s not the number of figures that makes you a “good dancer” — it’s your communication with your partner and with the music.**
**That’s exactly how this course is structured. 💛**
**Contact us, if you want to join! 😊**
**📧 info@puntocubanoberlin.com**
**📞 +49 155 100 966 28**
💛 What to Expect from a Free Trial Class
If you choose to join a free trial class, please note that you will be joining an ongoing course.
The purpose of the trial class is twofold: it gives you the opportunity to get an impression of us as teachers, our teaching style, and the level of the course, while also giving us the opportunity to get to know you as a dancer.
We believe that one of the advantages of joining a dance school is being able to trust the teachers' experience and criteria.
During the trial class, we not only help you decide whether the course feels right for you, but we also assess whether it is the best fit for your current level and learning journey.
Our goal is not simply to place you in a class, but to help you find your happy place within our dance community — the environment where you can learn most comfortably, progress steadily, and enjoy dancing the most.
The final decision regarding the level is therefore ultimately ours. If we notice that you are struggling significantly with the material, we may ask you to observe the remainder of the class and recommend a different level instead.
This is not meant to embarrass you or make you feel uncomfortable. Quite the opposite: it allows us to stay true to our values regarding technique, learning quality, and the comfort of the students who have been learning and progressing in the course over time.
In the long run, you'll probably be grateful for being placed in the level that supports your growth and enjoyment the most. 😊
We are very much looking forward to meeting you and dancing with you!
Yago, Helen, Pamela, Marion, Leo & Sylvaan
LINDY HOP | Swing Dance Classes in FRIEDRICHSHAIN
-DROP IN - *(English below)*
**Lindy Hop \| Swing Dance Unterricht**
Klassen (fast jeden) Dienstag Abend
18.15 Uhr Starter
19.30 Uhr Improver / Refresher
Bitte für weitere Informationen & Kosten, bitte hier schauen:
[SWING PATROL FRANKFURTER ALLEE - FRIEDRICHSHAIN](https://www.swingpatrolberlin.com/friedrichshain-1.html)
\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-
Classes (almost) every Tuesday
18.15 Starter
19.30 Improver / Refresher
All information here:
[SWING PATROL FRANKFURTER ALLEE - FRIEDRICHSHAIN](https://www.swingpatrolberlin.com/friedrichshain-1.html)
C# Events This Week
Discover what is happening in the next few days
Tea Summer Fest
Tea lovers! 🍵❤️
Join us at the **Tea Summer Fest** and discover a world of tea!
With just one ticket, you’ll be able to explore a wide variety of teas from around the world, join interactive workshops, meet fellow tea lovers, and enjoy delicious tea-inspired food and desserts.
As part of the Tea Summer Fest, the Wehanzi team will be bringing something special: tea desserts inspired by Taiwanese flavours and tea culture.
[Wehanzi ](wehanzi.com)is a Taiwanese language and cultural community offering an online Mandarin-learning iOS app, a vibrant language-learning community, and offline cultural and language exchange events.
Tea and desserts may seem simple on their own, but together they create endless possibilities. We’d love to invite you to discover these unique flavours with us. ✨
More details &tickets info : [https://luma.com/mej5pscy](https://luma.com/mej5pscy)
Tea Summer Fest
**3rd TEA SUMMER FEST Berlin** **A Full House of Tea – Diversity, Arts, Communities**
All of C\*SPACE transforms into a collective teahouse for one full day. Two floors of studios in the former furniture factory, plus our charming outdoor yard, become spaces for tea, art, conversation, and connection.
Whether you're a tea lover, creative, artist, entrepreneur, or simply curious — come celebrate summer's energy with us.
**What's happening:**
🍵 ***Tea Social Hangouts*** — Sit at tea tables by community tea hosts in our social hangout areas. Share tea, conversation, connection.
🎨 ***Creative Tea Market — Discover tea vendors, ceramic artists, and food. Browse, shop, meet the makers.We are especially grateful for the support of our sponsors and partners.***
*Summer Tea Fest 2026 is made possible by:*
**Sponsors:**
[Wild Orchard](https://wildorchard.de/en?utm_source=luma)
[Tee Kampagne](https://www.teekampagne.de/?utm_source=luma)
[Tealytics](https://tealytics.app/?utm_source=luma)
***Food partners: [Dot Tea Bar](https://www.instagram.com/dot.teabar/?utm_source=luma) & [Dahai Noodles](https://www.instagram.com/dahai0757/?utm_source=luma)***
**Media Partner:** [t-Magazin](https://www.t-magazin.net/?utm_source=luma)
...
**We are thrilled to announce our creative tea makers:**
[Swarra Tea ](https://swarratea.com/?utm_source=luma)(Sri Lanka)
[He ](https://www.he-tea.de/?utm_source=luma)喝[Tea](https://www.he-tea.de/?utm_source=luma) (Chinese & Taiwan)
[Darjeeling Cup](https://www.darjeelingcup.com/?utm_source=luma) (Darjeeling)
[Kanoa Tea ](https://www.kanoatea.com/?utm_source=luma)(Premium Japanese Tea, Tea Culture Experience)
[Julia Jushaninowa](https://www.instagram.com/jumariyama_amethyst_moon?igsh=MTI5bXRjZXJ1ZHFhMw%3D%3D&utm_source=luma) ([Global Tea Hut](https://globalteahut.org/?utm_source=luma))
[Studio Cúze ](https://www.studio-cuze.com/?utm_source=luma)(Yasuhiro Kuze) (Ceramic)
[East Tea Pavilion 东方茶亭](https://eastteapavilion.com/?utm_source=luma)(Chinese Tea)
Georgy Ekimov (tea enthusiast & artist)
Hong Mai Dang/ [Mai Teehaus ](https://www.maiteahouse.de/?utm_source=luma)(Vietnamese Tea Culture)
Yuko Tanaka-Betts - [Kikuno Tea](https://www.instagram.com/yuko_matchatea?utm_source=luma) (Japanese Tea)
[Melanie Katz](https://www.minipli.ch/?utm_source=luma)
Ming Yuan- [Tea by Yuan](https://teabyyuan.com/?utm_source=luma) (tea, tea wares, and tea culture)
[Infinitea Leaves](https://www.infinitealeaves.com/?utm_source=luma) (Japan/Korea)
[t-Magazin](https://www.t-magazin.net/?utm_source=luma) (tea culture magazine)
[Companion Tea](https://retail.companiontea.com/?utm_source=luma)
[Satoko Tanaka](https://www.instagram.com/caico.vintage.kimono/?utm_source=luma)\- Caico Vintage Kimono
[Lifejourney Tea](https://www.instagram.com/yifansingh/?utm_source=luma)
[Bing Bing Cha](https://www.instagram.com/bingbingcha000/?hl=en&utm_source=luma)
***Food to accompany the tea:***
[Dot Tea Bar](https://www.instagram.com/dot.teabar/?utm_source=luma)\- tea snacks
[Dahai Noodles](https://www.instagram.com/dahai0757/?utm_source=luma)\- hand\-pulled noodles
[Fungiii](https://www.instagram.com/fungiiicommunity?utm_source=luma)\- tea pastries & ice\-creams
[Wehanzi-](https://www.instagram.com/wehanzi/?hl=en&utm_source=luma) tea-inspired desserts
**Tickets here: [https://luma.com/mej5pscy](https://luma.com/mej5pscy)**
***
**What's included in the Collective Teahouse Day Ticket?**
🌿 Access to the **Creative Tea Market** — browse and discover teas, ceramics, arts & crafts from independent makers and vendors
🍵 **Community Tea Social Hangouts** — hosted by passionate tea lovers, experts, and curious minds from the tea community, offering tastings from around the world
🎙 **Cultural Tea Salon** — including a presentation by t-Magazine on their newest Yunnan edition
🎉 **After Party** — co-curated by Dot Teabar
------
☕ **In-Depth Workshops** — Dive deeper into the world of tea and creative craftsmanship through hands-on sessions led by passionate practitioners.
*Please note: **workshops are booked separately from the general day programme.** If you'd like to attend a workshop only, please register directly with the workshop host with the information below. Workshop attendees don't need to purchase a ticket if they only want to attend the workshop. To join both a workshop and the full day programme, purchase the workshop attendee ticket.* 🍵
10:00-11:30 **Exploring Post-Fermented Tea (Hei Cha)- A Side by Side Tasting**
by Johannes Fuchs
Participation fee: €26 per person
Register: johannes@teameon.de
10:00-11:30 **Senchado- Japanese Leaf Tea Ceremony**
by Jim
Participation fee: €42
Register: nost@gmx.de
12:00–13:30 **A Quiet Experience of Japan’s Finest Hon-Gyokuro**
by Aika Matsuda, Kanoa Tea
Participation fee: €45 per person
Register: [https://www.kanoatea.com/products/exclusive-japanese-tea-workshop](https://www.kanoatea.com/products/exclusive-japanese-tea-workshop?utm_source=luma)
12:00–13:30 **Summer Delights**
by Claudia Priemer
Participation fee: €35 per person
Register: claudia-priemer@web.de
14:00-15:30 **Exploring the South Korean Tea World**
by InfiniTea Leaves
Participation fee: €35 per person
Register: [https://www.infinitealeaves.com/shop/p/cspace-berlin-exploring-the-southkorean-tea-world](https://www.infinitealeaves.com/shop/p/cspace-berlin-exploring-the-southkorean-tea-world?utm_source=luma)
14:00-15:30 **Paper Cutting Workshop on the Theme of Teapots** by Stéphanie Clet
Participation fee: €30 per person
Register: [https://papercuttingteafest.eventbrite.de](https://papercuttingteafest.eventbrite.de/?utm_source=luma)
16:00-18:00 **Chinese Incense Orthodoxy and Aromatic Tea Heritage**
by MINALS
Participation fee: €45 per person
Register: [https://www.instagram.com/minals_cn/](https://www.instagram.com/minals_cn/?utm_source=luma)
16:00-17:30 **Craft Lab: Tea Blending Workshop**
by Swarra Tea
Participation fee: €49 per person
Register: [https://swarratea.com/products/workshop](https://swarratea.com/products/workshop?utm_source=luma)
18:00–19:30 **Spirits & Leaves: A Journey Through Tea Cocktails by: Tea by Yuan**
Participation fee: €60 per person
Register: teabyyuan@gmail.com
**Food Workshops:**
10:00-12:00 **Dahai Noodle Workshop: Hand-pulled Noodle along the Silkroads**
by Dahai 达海
Participation fee: €30 per person
Register: noodleworkshop@dahai-liao.de
16:00-17:30 **Mochi Craft: Summer Beat Hand-Pounded Mochi Workshop**
by Fungiii Community
Participation fee: €35 per person
Register: hellofungiii@gmail.com
From morning till late, explore the full vitality of summer unfolds around shared cups of tea.
**Contact:** Lavia Lin \| [pop-up-teahouse@c-space.eu](mailto:pop-up-teahouse@c-space.eu)
Python Users Berlin (PUB): An introduction to PySpark
📆 Agenda
* 19:00 Welcome to the PUB (Python Users Berlin) – setting up
* 19:15 Main talk
* 20:00 Lightning talks
* 20:30 Social gathering
🎙 Main talk by [Sam Bail](https://www.meetup.com/de-DE/members/57634242/): PySpark
PySpark is a powerful library that brings Apache Spark’s distributed computing capabilities to Python, making it a key tool for processing large-scale data efficiently. In this talk, data engineer and analyst Sam Bail provides a structured and hands-on introduction to PySpark, starting with an overview of Apache Spark, its architecture, and its ecosystem, such as Databricks. Learn about Spark’s core concepts, such as the DataFrame API, transformations, lazy evaluations, and actions, before setting up a lab environment and working with a real dataset. Plus, gain insights into how PySpark fits into a broader data engineering ecosystem and best practices on running PySpark in a production environment.
👩💻 About [Sam Bail](https://www.meetup.com/de-DE/members/57634242/)
Data engineer and engineering leader with 10+ years building platforms and teams across healthcare, marketplaces, and data infrastructure at NYC tech startups. I teach data engineering courses on LinkedIn Learning and O’Reilly, focused on making complex topics accessible to everyone. I also founded Bright Nights Social, an alcohol-free nightlife community that’s produced 100+ events across NYC. You’ll probably find me on a dance floor or running around Berlin this summer (training for the Berlin marathon).
📚 Resources
* [Apache Spark](https://spark.apache.org/)
* [PySpark](https://spark.apache.org/docs/latest/api/python/index.html)
* [PySpark DataFrame API](https://spark.apache.org/docs/latest/api/python/getting_started/quickstart_df.html)
⚡️ Lightning talks
We would like you to give a lightning talk (shorter than 10 minutes) about what you are doing with Python.
📍This will be a face-to-face meeting.
German Sprachcafé at Denizen! levels A2 - C1!
**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**
Networking & Language Exchange - 🍖international🍻
This is a 3 phase meetup. You can come at any time.
1.) 6:30 - 7:00 p.m.: Gathering at the meeting spot (see link and photo!).
2.) 7:00 - 7:30 p.m.: Walk & Talk through Tiergarten.
3.) 7:30 - 10:00 p.m.: Immerse conversations in the Zollpackhof beer garden (reserved tables for the meetup).
**1.) Meeting spot is Henriette Herz Park.**
Copy the coordinates into your maps app: **52°30'38.9"N 13°22'24.1"E**
The exact meeting spot can also be seen in the photo.
Look for a meetup sign or organizer wearing a black or red lanyard with "staff" written on it.
**Best ways to get there:**
1\. S\-Bahn:
Get off at Potsdamer Platz by S1, S2 or S25 and walk to the designated meeting spot.
2\. U\-Bahn \(subway\):
Alternatively you can get off at Potsdamer Platz by U2 and just walk 5 min straight to the park.
3\. Bus:
If you change at mainstation you can take the M41 or M85 to
S Potsdamer Platz /Voßstr. and walk to the park.
**2.) Walk & Talk through Tiergarten** (the best part imho). During these weird times it essential to connect with nature and like minded people. You will feel instantly energized and an inner calmness afterwards.
**3.) How to the find the Zollpackhof beer garden:**
https://goo.gl/maps/vDYYaJcFvTmd7hei7
Elisabeth-Abegg-Straße 1, 10557 Berlin
We will be sitting outside. Click the gmaps link with the exact meeting spot if you can can't find us!
If you enter from the Magnus-Hirschfeld-Ufer, just go to the left part of the beer garden where the self-service is.
If you enter from Elisabeth-Abegg-Str, enter the beer garden from the right.
*Who is this meetup for:*
1\. Internationals who want to practice German or any other language\.
2\. Germans who want to improve their language skills\.
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 Walk & Talk to break the ice\.
3\. A collaborating venue where you can further socialize with other members\.
*important:* This event is at the same time and meeting location like the "Asian Languages & Culture Exchange 日本語, 한국어, 汉语" 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.
Access Bars Class - English
There’s a peace and relaxation possible for everyone, that can occur with total ease, with a simple body process, called Access Bars ®
Access Bar is like hitting the delete button on your computer’s hard drive. Negative thought patterns and mental chatter can be released and a space for peace, ease and new possibilities opens up. Best, everyone can learn this body process in a one day class. You can give the Bars® to your family and friends and to your clients. And of course you can let the Bars run also on yourself.
Access Bars ® and Bodyprocess classes in English take place once a month, classes in German twice a month. Just ask for your desired date.
Would this class be a contribution to your body, to your life, your business? Then I would like to have you in a one-day Access Bars.
Consider this your invitation to a totally different paradigm for healing, change and transformation in all aspects of your life.
The Access Bars class fee is 380 Euro, Practitioner License, Manual, Charts, food and drinks included.
PLEASE NOTE THAT REGISTRATION IS ONLY POSSIBLE BY PHONE.
For more information please visit my website:
https://www.i-feel-so-good.de/home-en.html
What happens in the brain during a Bars Session:
https://www.youtube.com/watch?v=DgGbFRjqQPk
If you have any question or you want to book a session, do not hesitate to contact me. Once a week we have an Access Bars ® evening that gives you the opportunity to exchange the Bars® and to meet other practitioners. ®
Isadora Open Studio - Berlin
led by L (Isadora Expert)\*
Monthly meet-up for Isadora users in our Berlin studio. Join us as we cover special topics and offer guidance on the projects you are already working on. If you are new to Isadora, we provide a free Isadora 7-Day license to jump start your work. Beginner to advanced. All are welcome!
**Isadora** is a software created by and for artists to use interactivity in performance, installations and more. Learn about Isadora [here](https://troikatronix.com/isadora/).
**\*L** is a media artist, technical design consultant, multimedia show control programmer, as well as a projection, lighting, interactive technology, and live feed video designer. Their work has most recently been seen at Berliner Festspiele, Nationaltheater Mannheim,Düsseldorfer Schauspielhaus, Deutsche Oper, and La MaMa Galleria. They’re particularly interested in using various sensors to use the human body as a source of data for manipulating media
C# Events Near You
Connect with your local C# community
Cocoaheads
We have moved to guild.host. Look us up there.
https://guild.host/events/buckeye-cocoaheads-rcavwd
Much Ado About Nullable - C# Nullable Reference Types Explained
**Presenter:** Matthew Hess, Microsoft MVP
**Time:** Pizza at 6:00, Presentation Starts at 6:30pm Eastern
**Location:** Theoris, 9000 Keystone Crossing, Either Downstairs or in Suite 230 if main meeting room isn't available, Indianapolis
In 2019 (C# 8.0) Microsoft introduced a feature that has generated a lot of confusion, debate and outright dissent. I'm talking about Nullable Reference Types. In this presentation, I we dig into this feature, explore why it exists, what problem it tries to solve, how it works, and how people have critiqued it, so that you as a programmer can decide if and how you want to use it.
Looking forward to seeing you there!
Columbus PHP: Monthly Meetup
Our monthly PHP meetup.
A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm
Azure CBUS July
Want to be a speaker? submit your talk to our Call for Presenters!!!
https://sessionize.com/azure-cbus-2026/
Unity GameDev Hangout (Topic TBD)
*We'll update this with the specific topic(s) once they're set for the month.*
A relaxed, community-driven Unity GameDev meetup. No strict agenda — just developers getting together to talk shop, share projects, and exchange ideas.
Some topics that may come up (based on attendee interest):
* Frame Debugger & performance tooling
* Addressables & additive scene workflows
* Input System, localization, responsive UI
* AI integration approaches
* DevOps & LiveOps experiences
* Full lifecycle: idea → cross-platform publishing
* Favorite Asset Store tools and hidden gems
* Weird Unity quirks we've all run into
Nothing is locked in. Bring a project if you'd like, bring a question, bring a lesson learned — or just come hang out and meet other developers.
All skill levels welcome. Food and drinks provided.
DoJo (Informal Python Meeting)
**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
Stop Guessing: How to Measure and Improve LLM Outputs
Most people use LLMs by feel: ask a question, read the answer, decide whether it “seems good,” and move on.
That works for casual use. It does not work when you are building software, automating workflows, writing important documents, or relying on AI for anything that needs to be repeatable.
In this talk, we’ll look at how to improve and evaluate the inputs and outputs of LLMs using practical measurement techniques. We’ll cover how prompt changes affect results, how to compare outputs, how to build simple evaluation sets, and how math-based methods like similarity scoring can help you move beyond guesswork.
This will be beginner-friendly, so even if you don't know anything about AI, you should get something out of it. However, this will be a little more technical than our intro talks. You do not need to be an AI researcher, but programmers and technically curious attendees will get a lot out of it.
We’ll cover:
* Why “it looks good” is not enough
* How to improve prompts by changing the input, context, and constraints
* How to compare LLM outputs more systematically
* Basic evaluation techniques for accuracy, consistency, and usefulness
* How embeddings, cosine similarity, and scoring can help evaluate results
* Where automated evaluation works — and where humans still need to stay in the loop
By the end, you’ll have a practical mental model for treating LLMs less like magic and more like systems you can test, measure, and improve.
LOGISTICS AND PARKING:
The talk starts at 7:00 PM. The first half hour is reserved for everyone to get set up and mingle. Free pizza and drinks!
The cheapest parking option is to find street parking, which will only cost you a few bucks. Otherwise, park in the nearby veteran's museum lot for $8. It's highly recommended you avoid the nearby $15 garage parking.





























