Bitbucket

Welcome to the Berliner Bitcoin-Stammtisch, where we gather to talk about the digital currency that's worth more than gold and sometimes causes more drama than a Netflix series. Join our tribe of business beings, developers, and activists who believe that Bitcoin is the future of money, and El Salvador seems to agree! Here you can learn the ropes of Bitcoin, from buying your first fraction to safely storing your private keys. Our current hangout spot is Friedel Richter on Torstraße, because ROOM77 is closed until the last block is mined. You can pay in Bitcoin ₿ or Lightning ⚡ and enjoy awesome regional food with an international twist. So come join the fun, the food, and the revolution! We're waiting for you. 🍔🍔🍔

We will be hosting our May Meetup. Thanks to Amazon for sponsoring us. Please note that you have to show sign up with your real name and show a Photo ID to the building security before entering the building. Every visitor will have their photo taken that will be printed on their paper visitor badge. This is a requirement from the building security. If you are not ok with that, please do not sign up. You can not bring a +1, everyone needs to sign up. Please only sign up if you plan to come, we will keep notes. *Excited to announce our talks:* **pg_lake: Unifying transactional and analytical data with Postgres** by Celeste Horgan, Sr. OSS Developer Advocate at Snowflake. The common wisdom goes: data is either transactional or analytical, and workloads are OLTP and OLAP-shaped to match. The reality of generating and using data is different, and often we need a bit of both. The pg_lake extension brings OLAP workloads to OLTP Postgres. This talk will explore the pg_lake extension, including how to build it, and demos of using it with modern data workloads in object storage like Amazon S3. We’ll create simple data pipelines with no ETL and high performance analytics. **I Didn't Know Postgres Could Do That!** by Robert Treat, Principal Database Engineer at AWS and PostgreSQL Major Contributor. PostgreSQL is often thought of as "The Database for DBAs", but what more and more developers are finding out is that what makes Postgres "The Worlds Most Advanced Open Source Database" is its wide array of features, many of which are really geared towards engineers building applications on top of Postgres. In this talk, we'll look at some of the features in Postgres you may not have seen in other database systems, and talk about how you can make use of those features in your applications. Queries, indexing, data types, and more will all be up for discussion as we show you examples of just what Postgres can do.

Amazon Aurora DSQL is a groundbreaking technology that has a potential to re-define the entire DBMS solutions. Yet there are lots to uncover, lots to learn on the resource! Therefore, we are inviting you experts on Aurora DSQL with an engaging hands-on workshop to experiment uses of Aurora DSQL, and also learn on the topic. **Build a Multi-Region, Active-active Rewards App with Aurora DSQL** In this workshop, get hands-on experience with Amazon Aurora DSQL, a serverless distributed SQL database that delivers active-active high availability. Learn how to build a retail rewards points application with active-active resiliency across multiple Availability Zones and two Regions. Explore how ACID transactions and active-active replication work in Aurora DSQL. Discover best practices for data model and application design and more. You must bring a laptop to participate. This is a hands-on workshop with a practical deep dive into Amazon Aurora DSQL. You work through independent tasks that you need to complete, with support of AWS Facilitators. The event will also begin with an expert talk: "The Evolution of Resilience - Lessons Learned from 25 Years of Infrastructure Architecture" - further details ahead! **When?** 7th of May\, Thursday\,\| 12:30 \- 18:00 **Where?** AWS Office - BER 21 - Tamara-Danz-Str. 13, 10243 Berlin. **How?** [Fill out this form ](https://forms.gle/CMoz6qGraX8HBHVU6)to apply. Limited seats are available. You can only participate in the workshop if you receive a confirmation mail from us (**kadir@berlinawsug.de**). You need to bring your own laptop to this workshop. ❗**Registration - Read Carefully**❗ Participation is free of charge. Your workshop resource usage is also covered. You will be provided a sandbox AWS account. Therefore, you won't need an AWS account! ❗Please register with your full name by filling out this form: [Registration Form](https://forms.gle/CMoz6qGraX8HBHVU6) ❗You need to bring your own laptop to this workshop. Make sure AWS CLI is installed. Contact us if you're not sure how. ❗A confirmation e-mail from Meetup is not relevant. **You can participate only if you receive a confirmation from us: kadir@berlinawsug.de** \-\-\- **Additional Information** **This event is wheelchair friendly.** Help us spread the word, and invite your friends & colleagues! If you're attending with wheelchair and need assistance, please mail us: organisers@berlinawsug.de for further details. Would you like to host AWS UG Event at your company? [Register here](https://bit.ly/aws-host) Would you like to speak at AWS UG MeetUp? [Submit your topic here](https://bit.ly/aws-talk)

An *electric* atmosphere featuring visiting pros and some of the best comedians in Berlin at the city's longest-running weekly show. There's no such thing as a bad Chuckleheads; it's as consistent as it gets. Come and find out why we have more regulars than any comedy show in Berlin. The right mix of lively yet laid-back energy in an intimate setting, with well-curated line ups. Chuckleheads is primarily for experienced comedians, though depending on the week we might have a spot for a newbie or two. Doors: 8:00 pm Showtime: 8:30 pm RESERVATIONS ARE HIGHLY RECOMMENDED! We got limited seating. Book the amount of seats you need with your name and we'll have them ready for you. It is still a free-entry show, though please donate to keep the laughs coming and pay for production costs. Suggested donation is 10-20 euros. If you've been to other shows, you know it's well worth it. Come be part of it! As is tradition in the nine years (!) of the show, free shots are also given at the start of each show. Produced and hosted by Daniel Gutierrez. See you all Thursday!

Join Aiven and Google Cloud for a hands-on lab to learn building data infrastructure for AI applications in production, and how to run OpenSearch in production for AI and GenAI workloads. ***IMPORTANT: Please register on* \*\*\*[HERE](https://bit.ly/4sLWiua) \*\*\**to secure your sport.*** This interactive, instructor-led workshop is designed for developers and data engineers who want to build and run real-world data pipelines using open source tools. Note: Bring your laptop, we’ll be shipping code together. Agenda: \* 5:00pm\~5:30pm: Check-in, Food, Networking \* 5:30pm\~7:30pm: Tech talks and Hands-on Workshop \* 7:30pm\~8:00pm: Q&A, wrap-up ⚡️ Workshop 1 — Foundations: Build Your Own Pipeline ​Start from scratch and assemble a complete data pipeline using Aiven services. \- Provision and manage services -Connect systems into a unified pipeline ​- Build an observability setup \- ​Query real\-time data across services using SQL ​​ ⚡️ Workshop 2 — Advanced: Real-Time Retail Streaming Pipeline ​Go deeper with a real, production-inspired use case. \- ​Design and implement a high\-quality streaming pipeline \- Work with real\-time retail data flows \- Apply best practices for scalability and reliability What you’ll learn: * Deploy and scale OpenSearch for production * Best practices for vector and hybrid search * Build efficient real-time data pipelines * Design and optimize RAG architectures ​Why attend? * Build a production-style data pipeline * Learn how to connect Kafka, ClickHouse, OpenSearch, and PostgreSQL into a working, real-time architecture. * Learn by doing and Apply proven patterns * Provision services, stream data, and run queries yourself using both UI and CLI workflows. * Walk away with practical approaches you can reuse for streaming, analytics, and observability use cases. Who Should Attend: Developer and data engineer, interested in moving from prototype to production with OpenSearch. ​ **RSVP is not enough. You must apply for a ticket here:** [https://bit.ly/4sLWiua](https://bit.ly/4sLWiua)

Dear music lovers, RedRum Sessions is a Berlin-based event series featuring various brilliant musicians and performers from all corners of the world in one of Berlins coolest cocktail bars - RedRum Artbar. At the RedRum Sessions, we consistently book international Berlin based musicians with different styles and backgrounds, all events are curated and organised by The Traveling Stage. 📍RedRum ArtBar Grimmstraße 24, 10967 Berlin May 7, 2026 Door: 19:00 Start: 20:00 Music until 22:00 Entry 10€-15€ Donation The event is hosted by William Chee-Awai and Mayar Attia as The Traveling Stage.

Here we go again! The OWASP Berlin organizing team is happy to welcome you to the Wolt office at Stralauer Allee this time. Join us for an evening of knowledge sharing, networking, and discussions on all things IT Security. Whether you’re a seasoned security professional or just starting out in the field, this is a great opportunity to connect with the community and learn from experts. **The Talks** * *When Git History Lies: Commit-Date Spoofing as Malware Cover*, Sarthak Taneja * *From Prompts to Production: Finding Business Logic Failures in AI-Generated Applications at Scale*, Nohé Hinniger-Foray, Escape * *Having fun with Domains: ccTLDs, gTLDs, sTLDs, eTLDs ...*, Tim Philipp Schäfers, Mint Secure

Liebe Bitcoinerinnen, wir laden euch herzlich zu unserem nächsten Les Femmes Orange Meetup ein — ein Raum von Frauen, für Frauen, die sich für Bitcoin begeistern oder einfach neugierig auf das Thema sind. Egal, ob du schon lange im Bitcoin Space bist oder gerade erst eintauchst – komm vorbei, tausche dich aus, vernetze dich mit anderen Frauen und lass dich inspirieren. Dieses Mal treffen wir uns im **Restaurant Huong Que**. Im schönen Bergmannkiez. Je nach Wetter sitzen wir draußen oder drinnen. Für Fragen, Feedback und Infos: Les Femmes Orange Berlin **Telegram-Gruppe** https://t.me/+ccJ7AYxrz4FjOTdi Wir freuen uns auf euch!

Please contact me on WhatsApp if you’d like to join our group, as this group will soon be deleted from Meetup. 017684589930 Thanks, Marco We play every Sunday—year-round—and are looking for a few players who are willing to join regularly. Average age is around 27-50. We play on grass using poles as goals, which allows us to adjust the field and goal size depending on the number of players. Please arrive on time, as we need to divide the teams. Game starts 11:30 sharp. Wir spielen jeden Sonntag - ganzjährig - und suchen nach ein paar Spielern, die sich vorstellen können, regelmäßig dazuzukommen. Alter im Schnitt ca. 27-50. Wir spielen auf Rasen mit Stangen als Toren, wodurch wir die Platz- und Torgrösse flexibel a die Anzahl der Spieler anpassen können. Bitte pünktlich da sein, weil wir die Mannschaften aufteilen müssen. Das Spiel beginnt pünktlich um 11:30 Uhr.

**Build & Learn: AI with Coffee ☕ — Build & Share** This is a monthly meetup where we focus on real things people are trying to build — from work problems to personal ideas. We’re here to help you get started, meet other builders, and share what you’ve been working on. **🟡 Part 1 — Getting Started** If you’re a beginner: We’ll walk you through how to begin (tools, ideas, simple paths) Show examples of what others are building Help you take your first step **🟡 Part 2 — Builder Showcase** If you’re already building: You can present what you’ve been working on (5–10 minutes) Share challenges and lessons learned Get feedback from the group **⚠️ Limited Spots** This is a small group on purpose. Please only sign up if you actually plan to come. **Want extra help?** If you’re feeling stuck or thinking about transitioning your career, you can book a 1:1 session 👉 *[Calendly link](https://calendly.com/lindseypeng/workflow-clarity-call)* or join the community 💬 [Discord](https://discord.gg/dPnmzcCP8w)

Important: Register on the [AICamp event website](https://www.aicamp.ai/event/eventdetails/W2026050708) is required for admission. Join Aiven and Google Cloud for a hands-on lab to learn building data infrastructure for AI applications in production, and how to run OpenSearch in production for AI and GenAI workloads. This interactive, instructor-led workshop is designed for developers and data engineers who want to build and run real-world data pipelines using open source tools. **Note:** Bring your laptop, we’ll be shipping code together. **Agenda:** \* 5:00pm\~5:30pm: Check-in, Food, Networking \* 5:30pm\~7:30pm: Tech talks and Hands-on Workshop \* 7:30pm\~8:00pm: Q&A, wrap-up ​ **⚡️ Workshop 1 — Foundations: Build Your Own Pipeline** ​Start from scratch and assemble a complete data pipeline using Aiven services. \- Provision and manage services -Connect systems into a unified pipeline ​- Build an observability setup \- ​Query real\-time data across services using SQL ​​ **⚡️ Workshop 2 — Advanced: Real-Time Retail Streaming Pipeline** ​Go deeper with a real, production-inspired use case. \- ​Design and implement a high\-quality streaming pipeline \- Work with real\-time retail data flows \- Apply best practices for scalability and reliability **What you’ll learn:** * Deploy and scale OpenSearch for production * Best practices for vector and hybrid search * Build efficient real-time data pipelines * Design and optimize RAG architectures **​Why attend?** * Build a production-style data pipeline * Learn how to connect Kafka, ClickHouse, OpenSearch, and PostgreSQL into a working, real-time architecture. * Learn by doing and Apply proven patterns * Provision services, stream data, and run queries yourself using both UI and CLI workflows. * Walk away with practical approaches you can reuse for streaming, analytics, and observability use cases. **Who Should Attend:** Developer and data engineer, interested in moving from prototype to production with OpenSearch.

**IMPORTANT! Please register at** [Luma Page](https://luma.com/9svvrv99) ​Vibecoding is no longer the question. What matters is what you actually do with it. **​On May 9** at **Spiced Academy (Berlin)**, we meet to figure that out in practice — using **[Lovable](https://lovable.dev/)**. No lectures, no slides. You open the tool and start working. ​[Projector Global community](https://www.linkedin.com/company/projector-global-community/) ambassadors and mentors will guide you through the basics, help you navigate the process, and answer your specific questions. **​This event is for those who:** — already have some experience in vibecoding — want to test a tool hands-on instead of watching demos — are stuck on something specific and want a real answer ​Come with a question. Even better — submit it during registration. ​We recommend creating an account in advance so you can jump straight in. **Mentors** During the session, you’ll be supported by experienced builders and designers: * **[Vitalik Kotik](https://www.linkedin.com/in/vitali-kotick/)** — CEO & Co-Founder @Superapp, ex-Bolt Senior Product Designer * **[Yevheniia Liubchyk](https://www.linkedin.com/in/yevheniia-liubchyk/)** — Product Designer @Zoi * **[Olha Kirdiaieva](https://www.linkedin.com/in/olha-kirdiaieva/)** — UX Designer @JUPUS * **[Danilo De la Fuente](https://www.linkedin.com/in/danilo-de-la-fuente-product-manager/)** — Founder @Arma Music, Product Manager They’ll be there to help you unblock, give direction, and support your ideas in real time. **​Tool Partner — Lovable​** This event is supported by [Lovable](https://lovable.dev/) \- an AI\-powered tool for building products faster\, without getting stuck in complexity\. ​Lovable helps you turn ideas into working solutions, experiment quickly, and focus on what matters - logic, flow, and outcomes. ​Participants will receive free credits to explore the tool during the session. Learn more: [https://lovable.dev/](https://lovable.dev/?utm_source=luma) **​Venue Host​​​** Hosted by [Spiced Academy](https://www.spiced-academy.com/en) — a Berlin tech education hub focused on hands-on learning in AI, Data, UX/UI, and Product, and building a strong tech community. **Hosts**​​​ This event is organized by [Projector Global Community](https://www.linkedin.com/company/projector-global-community/) ambassadors (by [Projector Institute](https://prjctr.com/en/about)): * ​​​[Emiliia Karpiuk](https://www.linkedin.com/in/emiliiakarpiuk/?utm_source=luma) * ​​[Julia Savchuk](https://www.linkedin.com/in/yuliia-savchuk/?utm_source=luma) **​​​​Photos & Video** ​​​​Please note that we will be taking photos at this event. By attending, you agree to be photographed, and grant the organisers permission to use this footage online and for marketing purposes (e.g., on social media or our websites).

Agenda * 19:00 Welcome to the PUB (Python Users Berlin) – setting up * 19:15 Impressions from PyCon DE and PyData Darmstadt * 19:45 Workshop on adapting to LLMs as Python Programmers * 20:45 Social gathering (hang out afterwards to chat) This month host Travis will be presenting on his key takeaways from the recent PyCon DE & PyData Darmstadt, including personal highlights from the conference and which talks you should watch later on YouTube. Afterwards, Travis will lead a structured conversation on how we as Python programmers are coping with the ever changing technologies around us, namely LLMs like Claude-Code, OpenCode, Gemini, etc. Think of it as an unofficial LLM support group for Pythonistas! ⚡️ Lightning talks As always, we'll still have time for lightning talks (short 5 minute presentations). Please bring your ideas and inspirations with! Additional links: * https://2026.pycon.de/

Join us for a hands-on, collaborative **4-hour workshop** where we use LLMs to code. We will be implementing the following 3 exercises: [connect four](https://www.hellointerview.com/learn/low-level-design/problem-breakdowns/connect-four) [amazon locker](https://www.hellointerview.com/learn/low-level-design/problem-breakdowns/amazon-locker) and [elevator](https://www.hellointerview.com/learn/low-level-design/problem-breakdowns/elevator) ### **What we will do** We will use the LLM (any free one, like chatGPT) to write code that solves a given problem. Our goal is to not write code by hand, and to produce an application that passes a set of specifications. ### 🛠 **Share ideas about agentic coding** We will be practicing our agentic coding skills: * bring a laptop with Java or Golang installed * know how to code in either Java or Golang * share and explore ideas about how to use LLMs to create production-ready applications ### 💬 **Atmosphere & Logistics** The workshop is **free**. There will also be a 20 min pause, if you want to order snacks.

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/

This meetup is a beginner-friendly session introducing version control for Unity projects, with a look at three common tools: Git, Perforce, and Unity Version Control. The goal is to help you understand what version control is, why it matters for Unity development, and what options are out there. The format will likely be presentation-style, with live demos and time for questions throughout. You'll see each tool in action and learn how they fit into a Unity workflow. What to Expect: * An introduction to version control and why it's essential for Unity projects * An overview of Git, Perforce, and Unity Version Control * Demos of each tool in a Unity workflow * Tips for getting started * No prior version control experience required * Resources for continued learning All experience levels are welcome. Whether you're new to version control or already using one of these tools, this session will help you understand what each one offers. Food and drinks provided. Join us to learn more about version control options for Unity.

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

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

Customer identity resolution becomes increasingly complex as organizations scale across multiple systems, regions, and data formats. Traditional rule-based approaches often fail to keep up with data variability, require constant manual tuning, and struggle with real-time processing needs. This session presents a practical approach to building a scalable identity resolution pipeline using AWS services and modern AI techniques. The architecture combines data ingestion through Amazon S3 and AWS Glue, transformation pipelines using Spark on EMR, and machine learning models deployed via SageMaker for entity matching and standardization. Graph-based relationship modeling is implemented using Amazon Neptune to improve resolution accuracy by incorporating household and shared attribute context. We will walk through how machine learning models can be used for name and address normalization, how intelligent blocking strategies improve matching efficiency, and how feedback loops can be introduced to continuously improve accuracy. The session also highlights how serverless components such as AWS Lambda can be used for orchestration and real-time processing. **SPEAKER BIO** Mosaic Syed is a Senior Data Engineering and Cloud Solutions Architect with over 20 years of experience designing and delivering scalable, secure, and high-performance data solutions across global enterprise environments. https://www.linkedin.com/in/mosaic-basha-syed-92300856 **CALL FOR SPEAKERS** Learn more: [https://www.awscolumbus.com/get-involved/](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/](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

We will show how to build custom agents with Microsoft Agent Framework. Attendees will learn how to build and custom host agents when Microsoft Foundry is not a viable option.