Scientific Computing

We're helping spread the word about the upcoming Berlin FinOps Foundation Meetup and would love to see more of our Meetup community there. Please note: **registration is handled by the FinOps Foundation**, not through Meetup. Secure your spot here: [https://community.finops.org/event/berlin-finops-foundation-meetup-july](https://community.finops.org/event/berlin-finops-foundation-meetup-july) The event brings together FinOps practitioners, cloud cost leaders, and community members for networking and knowledge sharing. If you're interested in FinOps, cloud financial management, or connecting with peers in the Berlin area, this is a great opportunity to join the conversation. We're also excited that Henrique Amorim, who recently started as the FinOps Foundation's EMEA Community Lead, will be joining this event. Henrique is eager to connect with the community, share ideas, and discuss the future of the FinOps community across Europe. Bring your questions, feedback, and thoughts on where the community should go next. Register via the FinOps Foundation event page above and we'll see you there.

📆 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.

Join us (Lola 33 years, Liza 8 months) for a relaxed and friendly meetup for parents and children aged 0–2 years. This is a great opportunity to meet new people, share experiences, exchange ideas, and build connections with families who are at a similar stage of life. Whether you’re new to the area, on parental leave, or simply looking for company during the day, you’re very welcome. What to expect: * Meet local parents and children (0–2 years) * Make new friends for both you and your little one * Share parenting experiences, tips, and ideas * Exchange recommendations for local playgrounds, activities, and family-friendly places * Connect with families who live nearby * Find companions for future walks, playdates, and outings * Enjoy a welcoming, informal, and child-friendly atmosphere No agenda, no pressure - just a chance to connect, chat, and build a local community together. We look forward to meeting you and your little one!

We make landladies and landlords. They buy a flat and pay just 1/4. 3/4 come from tax cuts and tenants. It's not a trick. It's government policy. All German Federal Governments, past and present, of whichever party, want taxpayers to become landlords and -ladies, buy property, rent it out to tenants and enjoy passive income later. Come here and find out. No strings attached. No sales. Just a meet and greet for orientation. Wir machen Vermieter. Steuerzahler kaufen eine Wohnung und zahlen dafür nur 1/4. Mieter und Finanzamt zahlen 3/4. Das ist kein Trick. Das ist Politik: Alle Bundesregierungen wollen, dass Steuerzahler Vermieter werden, Wohnungen kaufen, Mieter reinnehmen und später Beton‑Rente bekommen. Info-Abend nur zur Orientierung. Kucken kostet nichts. S,U Bahnhof Zoo, Kantstraße 163-165, 10623 Berlin, Motel One Upper West, 10th floor, turn left, circumvent the sign "vorübergehend geschlossen" Go justs there. I'll be there. Georg Holzach. 0177 8181 900 WhatsApp

Join us for the **Berlin DevOps Summer Meetup**: our last edition before the summer break! We're excited to be hosted by **Parloa** for an evening of interesting talks, discussions, and networking. There will be food and drinks provided, and plenty of time to connect with fellow DevOps enthusiasts. **📌 Please register at least 24 hours before the event.** We need to share the attendee list with the Parloa office in advance, and **spots are limited**. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Agenda** 18:30 Open Doors, Networking with Food and Drinks 19:00 Welcome words by Parloa and BLN DevOps team 19:25 **Running K8s with AI: Automating** **the SRE Lifecycle with Grafana MCP and GitLab** 19:50 **The Pipeline Was Green — AI Agents and CI Trust** 20:15 Short Break 20:30 **Managing Uninvited Guests: Securing Open Source Dependencies** 20:55 Networking 21:30 Closing ➡️ Interested in hosting an event? Fill out our [Call for Hosts](https://docs.google.com/forms/d/e/1FAIpQLScBpga8Yp-QAQt2lGskZWOThaKyQ_MbMbZaNcklgeXxqr5Vrg/viewform?usp=sf_link) and let's set up a meeting. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- *Christoph Ebeling* **Running K8s with AI: Automating** **the SRE Lifecycle with Grafana MCP and GitLab** What does it look like to run 30+ microservices, 8 databases, and a Kafka cluster almost entirely through AI agents? This talk walks through a practical demo of automating the full SRE lifecycle: from incident investigation to deployment validation, using Grafana MCP and the GitLab Agent Platform, and where humans still need to stay in the loop. *Serhii Vasylenko* **The Pipeline Was Green — AI Agents and CI Trust** We’ve spent years building CI/CD pipelines that tell us when code is "technically correct," but are they capable of telling an autonomous AI agent if a change is safe to apply? This talk explores a real-world incident where an AI-powered automation -- pairing Renovate with Claude Code -- successfully executed a "green" pipeline that broke a critical QA cluster for three days, how the team reacted, and how we evolved our vision toward the future of human-agentic collaboration with code. *Frithjof Hoffmann* **Managing Uninvited Guests: Securing Open Source Dependencies** Open source software is the ultimate neighborhood party, but what happens when an uninvited guest slips through the door? This talk digs into the messy reality of dependency hell and its role in software supply chain security: from typosquatting attacks to maintainer account takeovers, and the abandoned projects with known CVEs quietly living in your codebase rent-free.

**We're bringing together 8 women for an 8-week series to learn investing in Indian stock market.** **Your host** **has experience with the Indian stock market and personal finance inside out, and she's running this as a pilot.** **We kick off with: Budgeting** **(add text about budgeting)** **The full 8-week journey:** **Week 1 — Budgeting** **Week 2 — Basics of Investing** **Week 3 — Stock Market 101** **Week 4 — How to Analyse Stocks (Simply)** **Week 5 — Deeper Stock Analysis** **Week 6 — Building a Safe Portfolio** **Week 7 — Trading & Zerodha** **Week 8 — Long-Term Investing with ETFs** ***Focus: Indian stock market throughout.*** **📅 Every Thursday, starting 2 July — 7:00 to 8:30 PM** **📍 Location shared with confirmed participants only** **💸 Reserve your spot via PayPal (Friends & Family) - https://www.paypal.me/Mim1609** **Spot confirms only after payment**** **Time: 7 PM - 8:30 PM** **Date: Every Thursday starting 2 July for 8 weeks.** **WHo are we?** **Join this meetup and become part of the biggest desi girl community in berlin with 150 active members as of now.** **(Note: community event for only south asian girls)**

This will be the first meetup of the group. A relaxed evening for people interested in bug bounty hunting, web security, AppSec and vulnerability research. The main goal is to meet like-minded people, talk about bugs, tools, targets, methodology, reports, interesting findings and whatever else comes up around security research. Since it is the first event, we can also spend a bit of time discussing how future meetups should be structured: casual chats, hacking sessions, short talks, tool sharing, report discussions or presentations. As soon as at least **3 people join**, I will look for a suitable location. The first meetup will probably be in a **café, bar or restaurant**. If there is enough interest in presentations, I can also look into booking a room with a **TV or projector** for future events. No preparation needed. Please keep everything legal and authorized.

**You complain — we entertain!** **An hour long chill-but-fun showcase where comedians turn your anonymous problems into punchy on-stage therapy** Write down anything you want - from dating disasters to existential crisis & watch comedians solve it in the craziest way possible. ❗️**You stay anonymous, and we won't talk to you unless you want us to!** Perfect for introverts, overthinkers, and anyone who needs a laugh **Doors 20:00 \| Show 20:30** * Stand-up comedy + live "therapy" * Different lineup + new problems every show Every show is a fresh combo of stand-up brought by the guest comedian and advice from the host **Lena Stolby** — she's Russian, so she really knows about problems! & **THIS IS A PAID WHAT YOU CAN EVENT** We have been running solely thanks tolthe support of the audience. **Suggested contribution: €15** standard / **€12** reduced (student, unemployed)

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!

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.

**A smooth Dance Class that takes You to the new level** This intermediate Dance Class guides You through the numerous facets of shuffle movements & shows You how to connect them into choreographies. Lead by our community member & a talented shuffle teacher Marcel who leads this class with experience connected to a lifetime of passion. Join us for an inspiring & exciting session filled with welcoming atmosphere - in our new club location in the heart of Kreuzberg, at Kottbusser Tor. A spacious indoor area, a stage to express Yourself & a large terrace create the perfect setting to connect, move & feel free. ***Try something new & experience an energetic dance style full of passion & great rhythms.*** ‍ **TICKETS:** available: Online &/ at the Box Office before the class **LEVEL:** Intermediate **WHAT YOU NEED:** Sneakers (the less traction, the better) ‍ **..for more info check out www.dnaartclub.com / follow us on IG: https://www.instagram.com/nightart.club/** We are more than just a dance studio - we are Your new Dance Family. **See You soon :)** **Love.** **DNA.** **__________________** \*This Workshop is free for Members of Dair Night Art e.V. and Subscribers of DNA. Art GbR ... more Info to Membership here: https://www.dna-artclub.com/membership \*\*By entering the DNA. HOUSE / DNA. CLUB, You agree to comply with the Hausordnung of Dair Night Art e.V. and Geschäftsordnung of Dair Night Art e.V. Please ensure You review these documents thoroughly in advance.

Meet, Match, MoveOn and Manage or Master Why Meet 1)Meet new People Culture Languages. 2)Not Match Romance, Political Views nor Religion, only Respect and Joy 3) Moveon, advance with your level, goals, and especially share and try Rotate the groups and let others participate a bit. 4) Master the challenges, and Manage to give a Like or appreciate the meetups!! **Thematic** or small Concept: Manage to Bring 2 German Friends and you get a Drink. if you bring your Ex Partner + 2 German friends =2 drinks = thats the Challenge and the Attitude of 2026

***All about real connection - beyond screens, beyond small talk.*** **ENTRY:** * FLINTA: free entry & free welcome Drink :) * REGULAR: 8€ (incl. one free Drink of Your choice = Soft / Wine / Beer / Cocktail) Whether You are looking for love, new friendships, or simply meaningful conversations, this is Your invitation to step into a space where people truly meet. We gather, we talk, we laugh, we share stories & moments — and most importantly, we get to know each other on a deeper level. Every respectful person is welcome. ‍ > Every week different Guide, different People, different Experience. ‍ The night begins with a round of Speed Dating & Friending guided by DNA. Members, giving You the chance to connect with different people in a playful, open & respectful atmosphere. No pressure, just presence. Afterwards, the space opens up — stay, deepen connections, enjoy Your drink & let the evening unfold naturally. **DOORS**: 7.30 pm **MEET & GREET**: 7:30 - 8 pm **SPEED DATING & FRIENDING ROUNDS**: 8 – 9 pm **OPEN SOCIAL & HANG OUT** * optional free entry to a COMEDY SHOW about DATING: 9 - 10.30 pm > Come as You are. Leave with new connections. **..for more info check out www.dna-artclub.com / follow us on IG: [https://www.instagram.com/nightart.club/](https://www.instagram.com/nightart.club/)** **See You soon :)** **Love.** **DNA.** **__________________** \*This Workshop is free for Members of Dair Night Art e.V. and Subscribers of DNA. Art GbR ... more Info to Membership here: https://www.dna-artclub.com/membership \*\*By entering the DNA. HOUSE / DNA. CLUB, You agree to comply with the Hausordnung of Dair Night Art e.V. and Geschäftsordnung of Dair Night Art e.V. Please ensure You review these documents thoroughly in advance.

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/azure-cbus-2026/

Topic to be announced. **CALL FOR SPEAKERS** Learn more: https://www.awscolumbus.com/get-involved/ **THANK YOU** *VEEAM* for hosting our meetup! To learn more about *Veeam*, please visit their website: https://www.veeam.com/ **DIRECTIONS** 8800 Lyra Dr #450 · Columbus, OH go to 4th floor. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

**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

Bring your Raspberry Pi, Arduino, microcontroller, or any other electronic project and join fellow electronics makers for a night of creativity and collaboration! This session is open forum to share your current projects—whether complete or in progress, it’s all interesting! Whether you’re deep into embedded systems, exploring new ideas, or just getting started, you’ll find a welcoming space to collaborate, share, and get inspired. **New to electronics or curious about tinkering?** You’re absolutely welcome. If you’re a beginner and want to experiment, I’ll have a couple of starter kits available so you can try things out—whether that’s blinking your first LED, putting something on a display, or experimenting with simple sensors. No pressure and no experience required—just an interest in learning and building. While we continue to pursue a more permanent venue for this Meetup, we’ll be using public library facilities based on availability.

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.

Highlights and Hidden Gems in SQL Server 2025 With so much emphasis on cloud data platforms and AI these days, SQL people can feel left behind by all the marketing hype. SQL Server 2025 was officially released in November of 2025, though, and contains a ton of improvements that will make our SQL Server deployments a bit faster, better, and more secure. There are even more improvements tucked into the release that never made a marketing blog or press release that you'll likely be learning about for the first time in this session! Join this session to learn about what makes your high availability a little more available, your performance a bit more performant, and your database more developer and app-friendly. Come spend an hour with SQL people talking SQL Server 2025 – the good, the "not quite ready for prime time", and the hidden awesomeness.

We have moved to guild.host. Look us up there. https://guild.host/events/buckeye-cocoaheads-rcavwd