Context Driven Testing

**"Dankbarkeit ist nicht das Ergebnis der Freude, sie ist ihre Ursache."** — David Steindl-Rast Liebe Montagsgruppenfreund\*innen, Liebe Interessierte, wie oft sagen wir „danke" und spüren dabei nichts.
Kein Gefühl, keine Regung im Körper, nur das Wort, das an der richtigen Stelle ausgesprochen wird. Als Kinder haben wir es gelernt: „Sag danke." Und danke wurde zur Höflichkeit, zur Formsache, zu etwas, das man sagt. Und wenn wir wahrhaftig dankbar und ganz ergriffen sind von diesem wundervollen Gefühl, dann erscheint uns „danke“ vielleicht gar nicht ausreichend als Ausdruck dessen was wir wahrnehmen. Wann warst du das letzte Mal wirklich dankbar?
 Vielleicht führst du ein Dankbarkeitstagebuch; erzähle uns gerne davon. Vielleicht ist es lange her, dass du dir diese Frage überhaupt gestellt hast. Wofür bist du in diesem Moment dankbar? Dir selbst. Deinen Liebsten. Dem Leben - mit allem, was es gerade bereithält. Fast jede Tradition kennt einen Moment, in dem Menschen innehalten und danken: Zur Erntezeit, am Ende eines Zyklus, bevor etwas Neues beginnt. Wir stehen am Ende des Semesters. Ein guter Moment, um zu danken. Ich lade dich am kommenden Montag ein, die Dankbarkeit im Herzen zu finden, zu fühlen und wo sie da ist, sie zu feiern. Bring mit, wofür dein Herz gerade dankbar ist.
Und auch das, was dein Herz belastet.
Du bist willkommen. Ich freue mich auf dich, euch und uns! Herzlich, Sophie **Ankommen in der Gefühlsschule** ab 19:15 Uhr - bitte nicht früher kommen - Beginn der Gruppe: 19:30 Uhr Kosten: 20 € (bar oder per PayPal vor Ort) Kontakt bei Fragen (ansonsten einfach vorbeikommen, keine Anmeldung notwendig & ich freue mich wenn du dich anmeldest:) [sophie@connecting-circle.de](mailto:sophie@connecting-circle.de)

Join us for a creative gathering for neurodivergent people, including those with autism, ADHD, AuDHD, dyslexia, and similar neurodivergences. **At this edition of the Creative Sharing Circle we want to show you how to fold zines**. We will show you how to fill paper with text, drawings and collage. The **content can be political, fun or introspective**. Zines are a great accessible way to communicate something meaningful you‘d like to share with the world. **Zine culture is intimately intertwined with liberation movements of marginalized people.** Let‘s keep it alive and enrich it with **neurodivergent perspectives.** We will provide some arts and crafts equipments but feel free to bring your own arts and craft tools if you want to do your own project. The facilitators will also guide you on how to create zine and how to use the arts and craft material. **The event is free and there will be no donation box at the event, but your support is very much welcomed Donation Link: [Ko-fi](https://ko-fi.com/neurodivergentberlin)** **Where:** PopUp Gruppenraum 2 at Amerika Gedenkbibliothek **Facilitators:** [Agnieszka Błaszczak ](https://www.instagram.com/foxyberlin21/)(Aga), a multimedia artist, and [Cosmo](cosmo@kritische-maennlichkeit.com) (Visual Anthropologist). **Important Notes:** * If you can’t attend, please edit your RSVP to give the spot to others people. * The community is run by neurodivergent volunteers, so please help us create a positive experience. * Bring sensory tools (headphones, stimming toys, etc.), and we will have some available. * A quiet corner will be provided for breaks. * This event is for late-diagnosed adults (18+). For children’s events, a parent or guardian must be present. See you there!

**Hi everyone!** 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 B1 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**

Andere drücken die Schulbank, wir aber wollen in gemütlicher (und realer) Atmosphäre wieder aufeinandertreffen und einen Deutsch-Spanisch-Tandemkurs aufleben lassen. Beim einfachen Zusammenkommen und kennenlernen lässt es sich schließlich viel effektiver lernen. und Spaß haben. ...

Liebe Freunde des gesprochenen Wortes, Ob es darum geht, ein Meeting zu leiten oder im Familienkreis einen Toast auszusprechen – diese Situation vor Menschen zu stehen und etwas zu vermitteln kennt so gut wie jeder. Wir lernen gemeinsam, dabei gelassen und souverän zu bleiben, wertvolle Informationen zu transportieren und unser Publikum zu begeistern. **Was macht unseren Club besonders?** Unser "Mut und Rede" Club trägt nicht umsonst seinen Titel: wir pflegen einen wertschätzenden Umgang miteinander, sodass die Hemmschwelle möglichst gering ist, sich selbst auf die Bühne zu trauen. **Wie läuft so ein Clubabend ab?** Es warten vorbereitete Reden auf euch, aber auch ihr habt die Möglichkeit in geschütztem Raum eine spontan improvisierte freie Rede von 1 bis 2 min vor Publikum zu halten. Das klingt vielleicht im ersten Moment etwas abschreckend – aber es ist eine ganz tolle Erfahrung über sich selbst hinauszuwachsen. Und egal was passiert, ihr werdet immer für Euren Mut belohnt. Und es wird auch immer geklatscht. Wir freuen uns, Euch kennenzulernen! Hier findest du die genaue Wegbeschreibung: www.mut-und-rede.de/kontakt#anfahrt Um besser planen zu können freuen wir uns über vorherige Anmeldung: kontakt@mut-und-rede.de https://www.mut-und-rede.de Es findet grundsätzlich jeder Clubabend statt, auch wenn laut meetup nur wenige Teilnehmer zugesagt haben. (Foto © Moritz Erdt)

\*\*\* English below \*\*\* ### Einladung **Du bringst die Frage** **Das Spiel bringt die Klarheit** **Wir halten den Raum** Du bist herzlich eingeladen, gemeinsam mit anderen einen achtsam gestalteten Raum für tiefgehende Fragen und persönliche Klärung zu betreten. Der Flow Game Salon bietet dir die Gelegenheit, mit einer für dich bedeutungsvollen Frage präsent zu sein – und im Kreis neue Perspektiven und Resonanz zu erleben. Das Flow Game ist ein dialogisches Reflexionsspiel, das dich einlädt, innezuhalten, zuzuhören und Impulse für das zu empfangen, was in deinem Leben gerade zählt. Keine Vorkenntnisse erforderlich! **Ort:** Facilitation Academy, Wilhelmshavener Street. 18, 10551 Berlin **Sprache:** Meist Deutsch oder Englisch (wir passen uns an, nach Bedarf) **Spendenbasis:** 20–50 € pro Person inkl. Hosting, Vorbereitung, Raum und Snacks (Empfehlung) ### 🕒 Ablauf (ca.) * **15:45 – 16:00** – Ankommen * **16:00 – 16:45** – Check-in-Fragen & Café * **16:45 – 19:30** – Flow Game spielen (im Kreis oder in Kleingruppen) * **19:30 – 20:00** – Reflexion & gemeinsamer Abschluss ### Praktisches * Komme gern in bequemer Kleidung – wir sitzen und bewegen uns vielleicht leicht im Raum. * Es gibt Tee, Kaffee, Wasser und kleine Snacks. Wenn du etwas Besonderes mitbringen oder teilen möchtest, sehr gerne! * Wir sind ein wechselnder Kreis von Gastgeber:innen aus dem Berliner Flow Game Netzwerk. Die jeweils anwesenden Hosts bestätigen ihre Teilnahme im jeweiligen Event. * Je nach Gruppengröße spielen wir in einem gemeinsamen Kreis oder in parallelen Gruppen in verschiedenen Räumen. Wir freuen uns auf dich – und deine Frage. Jede Perspektive bereichert den Kreis, unabhängig von deiner bisherigen Erfahrung mit dem Flow Game. Herzlich, das Flow Game Salon Team **\*\*\* english Version \*\*\*** **Invitation** **You bring the question** **The game brings the clarity** **We hold the space** You are invited to join others in a mindfully designed space for deep questions and personal clarification. The Flow Game Salon offers you the opportunity to be present with a question that is meaningful to you - and to experience new perspectives and resonance in the circle. The Flow Game is a dialogical reflection game that invites you to pause, listen and receive impulses for what matters in your life right now. No previous knowledge required! Location: Facilitation Academy, Wilhelmshavener Street. 18, 10551 Berlin Language: Mostly German or English (we adapt as needed) Donation basis: 20-50 € per person incl. hosting, preparation, room and snacks (recommended) **Schedule (approx.)** 15:45 - 16:00 - Arrival 16:00 - 16:45 - Check-in questions & café 16:45 - 19:30 - Play flow game (in a circle or in small groups) 19:30 - 20:00 - Reflection & closing together **Practical** * Come in comfortable clothes - we may sit and move around the room slightly. * There will be tea, coffee, water and snacks. If you would like to bring or share something special, please feel free! * We are a rotating group of hosts from the Berlin Flow Game network. The hosts present confirm their participation in the respective event. We look forward to hearing from you - and your question. Every perspective enriches the circle, regardless of your previous experience with the Flow Game. Sincerely, the Flow Game Salon Team

Hello everyone! The German Testing Board (GTB), together with our partners IREB, iSAQB, and the Einstein Center Digital Future, warmly invites you to **“Quality is NOW – Networking Around Quality Engineering”** in Berlin. Join us for an inspiring evening of networking, engaging discussions, and new connections. Following short talks from the worlds of Requirements Engineering, Software Architecture, and Quality Engineering, we will explore the question: **How is AI changing the world of software development?** During a World Café session and informal networking afterwards, we'll tackle the questions everyone is asking right now: \- What's your biggest pain point when using AI? \- Has AI improved or compromised quality in your projects? \- Which skills do teams and leaders need to succeed with AI? \- And where should we focus our efforts next? Join the conversation, exchange experiences, and discover how others are navigating the opportunities and challenges of AI-driven software development. **What to expect** * **Inspiring insights:** Gain practical tips and fresh perspectives for your career in Quality Engineering. * **Meaningful connections:** Meet developers and quality engineering professionals who share your passion. * **A relaxed atmosphere:** Enjoy drinks, delicious food, and great conversations in an inspiring setting. 📅 **When?** 8 July 2026 – Doors open at 5:30 PM (Event: 6:00 PM–9:00 PM) 📍 **Where?** Einstein Center Digital Future, Wilhelmstraße 67, 10117 Berlin 🎟 **Free admission** – Please register We look forward to seeing you there! **Your “Quality is NOW” Team**

We're trying something new this month at the Berlin Collaborative Modeling Meetup. And guess what? It's about AI! In this hands-on workshop, we’ll move beyond “chatting with the coding assistant” and practice giving an AI agent real tasks: planning, implementing, iterating, and reporting back. You’ll follow along from your own laptop and experience the shift from working with the agent to delegating work to the agent. Bring your laptop and your tokens.

Welcome to **The Improv Lounge**, a space where the social is as centre stage as the show. Think soft chairs, a sweeping verandah (if the weather's right!), refreshing drinks, group warm-ups & improv—the ultimate icebreaker! **The Improv Lounge** is all about *community*, *connection*, and *creative collaboration*. Come learn new skills, play games, and meet new people in a completely relaxed environment. **You are also invited to stick around afterwards to drink & chill.** [RSVP here](https://www.dna-artclub.com/events/improv-lounge) *Suited to those who enjoy performance, it's also suitable for internationals living in or passing through Berlin hoping to meet new people in a fun and structured way.* It all takes place at **[DNA. Arts’](https://www.dna-artclub.com)** exciting new location, just a minute's walk from the *Kottbusser Tor U-Bahn station*. The venue offers a huge open space with a *large stage*, *professional lighting*, *a well-stocked bar*, and a *beautiful wooden verandah.* **Hosted by Geoff, a super-friendly & experienced actor, improvisor, teacher and event host!** ### TICKETS & ACCESS [RSVP here](https://www.dna-artclub.com/events/improv-lounge) * **Single Session:** €15 * **[DNA. Arts Membership](https://www.dna-artclub.com/membership):** Join our friendly community from €22 and get unlimited access to a full menu of creative workshops all month round. *Ready for a deeper dive? For a more focused improv session, join the [Improv Meet-up](https://www.dna-artclub.com/events/improv-meet-up) with Roby at our other Kreuzberg location [every Sunday at 2:30 PM](https://www.dna-artclub.com/events/improv-meet-up).*

AI agents are moving into production. The question is no longer whether to use them, but what it actually takes to make them work once the demo is over. This **WeAreDevelopers** PreDay meetup is for builders, founders, and practitioners wiring AI agents into real codebases, CI/CD pipelines, developer platforms, and knowledge systems. The evening focuses on the honest conversations that rarely fit into a conference talk: what breaks at scale, what context engineering really looks like, and where the failure modes hide. The theme is **connected intelligence**: how graph-based reasoning, smarter pipelines, and agentic code review are changing production AI systems, and what engineering teams need to do differently to support them. We will explore constraint satisfaction in agent decision-making, agentic AI in production, AI-powered development workflows, and Java’s role in the future of AI systems. No vendor pitches. Just the stuff that runs in production. ## Agenda | Time | Session | | ---- | ------- | | 17:00 | Doors Open, Drinks and Networking | | 17:30 | Welcome and Opening Remarks | | 17:45 | Andreas Kollegger, Director of GenAI, Neo4j | | 18:10 | Break, Food, and Networking | | 18:35 | Panel Discussion: Agentic AI in the Wild | | 19:20 | Tech Talk 2: CircleCI | | 19:45 | Ana Maria Mihalceanu, Java Champion Alumni and Developer Advocate, Oracle | | 20:25 | Closing Remarks | ## Speakers and Sessions ### Andreas Kollegger, Director of GenAI, Neo4j **Talk:** *Where is the Zebra? Agent Decision-making as Constraint Satisfaction* Zebra Puzzles are a useful lens for understanding agentic reasoning. They require no domain knowledge, only structured constraint satisfaction. Real-world decisions, however, are messier: loan approvals, resource allocation, compliance, and approval routing often combine hard rules, soft rules, and human discretion. This session examines how different architectures approach structured decision-making and why recognizing constraint satisfaction problems changes how you build agents. You will learn how constraint networks, LLMs, and hybrid systems solve logical problems differently, how enterprise decisions often hide “Zebra Puzzles” beneath complexity, and when your agent needs search, inference, generation, or a hybrid approach. ### Ana Maria Mihalceanu, Java Champion Alumni and Developer Advocate, Oracle **Talk:** *Now and Next Java for AI* Tired of treating AI as a black-box REST endpoint? With JDK 25 and the Foreign Function and Memory API, Java developers can wire real models directly to native runtimes such as ONNX for fast CPU/GPU inference. This talk shows how to map tensor buffers to Java `MemorySegment`, switch execution providers, and build self-contained Java applications for inference. It also looks ahead to Project Babylon’s code reflection, where model logic can be expressed as Java code that can be analyzed and lowered to accelerator backends, reducing the need for external model files or glue languages. Build expressive and testable FFM-based inference today, and author pure Java AI-ready models tomorrow. ### CircleCI Speaker **Details TBC** ## Panel: Agentic AI in the Wild What does it take to move AI agents from proof of concept into systems that run reliably? This panel brings together practitioners from across the stack to discuss context management, failure modes, governance, production workflows, and what changes when agentic systems scale. Expect specific lessons, not talking points. ### Moderator **Dana Fine — Open Source and Community Manager, Qodo** Dana leads open-source programs and community at Qodo. She runs the GitHub User Group, CNCF local and GenAI communities, organizes the Bond AI meetup series, and has built developer communities across the cloud native and open-source ecosystem for years. ### Panelists **Nnenna Ndukwe — Developer Relations Lead, Qodo** Nnenna leads Developer Relations at Qodo, the AI code review platform. She is a software developer, applied AI researcher, and community builder with over a decade of experience across med-tech, fintech, and media-tech. A 2019 Google Women Techmakers Scholar, she focuses on integrating AI code review into modern development workflows for open source and enterprise teams at scale. **Sebastian Kister** Sebastian is a cloud pioneer and enterprise transformation practitioner known for implementing production-ready architecture for Agentic AI Operations in a large enterprise environment. An active CNCF and Linux Foundation member, he advocates for scalable platform ecosystems and a people-first approach: people first, then tools, then processes.

Just before everyone disappears for the holidays, let's get together for one more Java meetup! This time we're joining forces with **Spring User Group**, and thanks to our friends at **JetBrains**, we'll be meeting at their office. We'll also have a raffle featuring **WeAreDevelopers World Congress** tickets and other prizes. \#\# 🎤 Alexei Zinoviev *Software Developer at JetBrains* ### **Kotlin and Spring Boot: From Messy Public Data to a Robust Application** Real applications rarely get clean input. Source pages change, fields are missing, text formats are inconsistent, parsers make assumptions, and external services such as geocoders can be slow, incomplete, or temporarily unavailable. In this talk, we will use a small Berlin-focused Spring Boot application written in Kotlin. It reads public demonstration data, parses semi-structured HTML, converts raw rows into a typed domain model, applies classification rules, geocodes locations where possible, and exposes the result through a Spring MVC API, an interactive map, and a timeline. The Kotlin part is not a rewrite pitch. Spring Boot stays the familiar foundation for controllers, services, scheduling, database access, and operational endpoints. Kotlin helps in the parts where enterprise code often becomes defensive and noisy: nullable input, parsing results, rejected rows, domain identifiers, explicit states, and readable transformation pipelines. A central part of the example is a small Kotlin DSL for rules. The classifier is not AI and not a black box: rules are written as type-safe Kotlin code, close to configuration, readable in the IDE, and able to explain why a certain operational risk score was assigned to an event or route. We will also look at what makes the application robust in practice: handling parser failures, conversion problems, missing coordinates, partial results, and unstable external services without turning every expected problem into a generic HTTP 500. \#\# 🎤 Dmitry Chuyko *Architect at BellSoft* \#\#\# From Kitchen to Table: A Safe Software Journey with SBOMs The EU's Cyber Resilience Act (CRA) is turning Software Bills of Materials (SBOMs) from a "nice to have" into a legal requirement for many software products. Managing your software supply chain is no longer optional—it's part of shipping software responsibly. Think of your containerized Java (and Spring) application as a dish served to production. Every ingredient matters, and someone will eventually ask what's inside. SBOMs are the ingredient lists that security scanners, auditors, and regulators rely on. In this practical session, we'll look at how Java and DevOps teams can make SBOMs part of their everyday workflow. We'll cover: * generating and managing SBOMs in CI/CD (GitHub Actions and GitLab CI) * verifying pre-built container images * enforcing supply-chain policies in Kubernetes with OPA and Ratify * navigating SPDX vs. CycloneDX * integrating SBOMs into existing toolchains without unnecessary complexity Rather than treating SBOMs as compliance paperwork, you'll learn how to use them as actionable security artifacts that improve visibility, strengthen your software supply chain, and help meet regulatory requirements. \#\# Schedule **18:00** – Doors open **18:30** – Alexei Zinoviev **19:00** – Networking break **19:30** – Dmitry Chuyko — *From Kitchen to Table: A Safe Software Journey with SBOMs* **20:30** – Networking, refreshments, and the **WeAreDevelopers World Congress** ticket raffle

All talks will be **presented in English**, to ensure that as many people as possible can participate and engage at this event. **If you want to attend, please RSVP to secure your spot - this will make organizing easier. Thank you so much ♥️** **Location:** [SVA System Vertrieb Alexander GmbH, Rotherstraße 16, 10245 Berlin](https://maps.app.goo.gl/9t7c5Q6EF2tnWZzo6), see [travel information](http://www.sva.de/sites/default/files/2025-06/AnfahrtSVA_Berlin_2025.pdf) for more. \-\-\-\-\-\- **🏠 18:00 - Arrival: Networking, Drinks & Snacks (30 min.)** Grab yourself snacks & drinks and say hello to everybody else! **📅 18:30 - Introduction & What's new at Datadog? (15 min.)** **🎙️**Speaker: Marcel Drechsler, User Group Leader & Datadog Ambassador Introduction into the evening and highlights of Datadog's recent new features and products. **📅 18:45 - Working Smarter With AI in Datadog: From Bits AI and Investigations to Full LLM Observability - Pilot to Production for your Projects! (40 min.)** **🎙️**Speaker: James Henderson, Partner Solutions Architect (EMEA) @ **[Datadog](https://www.datadoghq.com/)** Most of us use a fraction of what Datadog can actually do - **and now there's powerful new capabilities: AI for Datadog and Datadog for AI.** This session is a live demo: your chance to see the latest AI features in action and what they mean for your day-to-day work. We'll start with AI for Datadog - how Bits AI, Autonomous Investigations and natural-language querying take the toil out of troubleshooting, surfacing root cause in seconds. Then we'll flip it around to Datadog for AI: if you're shipping AI projects, LLM features or agents, we'll show you how AI LLM Observability traces every prompt, call and tool step, catches quality and cost drift early, and takes your AI from pilot to production with confidence. We'll spend fifteen minutes aligning on the new Datadog AI capabilities, then move straight into the platform for live demos showing what's possible. **📅 19:40 -The AI Agent Passed Every Test. Then It Shipped.** **(30 min.)** **🎙️**Speaker: David Edoh-Bedi, Developer Relations @ **[Datadog](https://www.datadoghq.com/)** Your CI is green. Your evals passed in dev. You shipped the agent. Now what? Production AI agents fail in ways your test suite was never built to catch. Prompts drift silently as people "optimize" them. Agents enter tool loops and burn through your API budget overnight. Your dashboards stay green and your users notice anyway. This talk walks through real production failure modes using a live agent, shows what each one looked like from the outside (spoiler: fine), and demonstrates the monitoring that actually caught them. You'll leave with specific instrumentation to add before your next agent ships, and a clearer sense of what your dashboards aren't telling you. **🥗 20:15 - Drinks, Food & Networking** Enjoy refreshments while networking with community peers! **👋 21:00 - Goodbye, see you next time!**

Join us for an evening of Flutter, Dart, and networking hosted by CarOnSale. We'll kick things off with a deep dive into one of Dart's newest language features, followed by a second session and plenty of time to connect with fellow developers from the Berlin Flutter community. **Schedule** **18:30 — Doors Open** Check in, grab a drink, and meet fellow Flutter developers from the Berlin community. **19:00 — Welcome Notes** A short introduction from Flutter Berlin and our hosts at CarOnSale. **Talk 1 — Hiding Complexity with Dart Extension Types — Roman** Extension types in Dart 3.3+ let you elegantly hide the real complexity behind clean abstractions. They enable powerful patterns for true compile-time singletons with strong privacy guarantees, while also letting you build robust zero-cost Value Objects that enforce domain invariants and create a clear ubiquitous language — all with zero runtime cost. **About Roman** Roman is a Google-awarded Flutter Developer and Staff Mobile Engineer at CarOnSale.de, where he has worked for 4 years as part of his 8 years of Flutter experience (and over a decade in design). He loves Dart as his primary language and Rust as a complementary one (along with TS/Swift), but believes strong programming fundamentals matter more than any specific syntax. In his role he mentors Flutter developers and shapes architecture solutions. Outside of work he prioritizes family and open-source. **Talk 2 — TBA** Our second session of the evening will be announced soon. **20:30 — Networking & Socialising** Meet fellow Flutter developers, exchange ideas, discuss the talks, and connect with the local community. **22:00 — Doors Close** We wrap up the evening and head home inspired with new ideas and connections.

Hi everyone! We're Jared and Petria Walker, local real estate investors based in Columbus, Ohio, with a passion for short-term rentals and hospitality. We're looking to start a casual monthly Columbus-area meetup for entrepreneurs, investors, real estate professionals, and anyone interested in short-term rentals to share ideas, discuss market trends, learn from one another, and build meaningful relationships. Whether you're just getting started or have years of experience, we'd love to connect, collaborate, and grow together. We believe some of the best opportunities begin with great conversations. See you soon!

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.

You can sleep in on the Semiquincentennial (observed), we’re shifting to the following Friday. But join the local UX community for a chat and some biscuits to catch up. If you were in CA for Figma Config, tell us all the lines and you can tell me how I can animate an SVG without coding it by hand, and why I’d even want to. Thanks to the team at Nationwide of supporting the group.

Join the CONNECTED Westerville Mastermind Group for a dynamic afternoon of B2B networking! This event is perfect for professionals looking to expand their business connections, share insights, and foster collaboration within the community. Whether you are a seasoned entrepreneur or just starting out, this event offers a valuable opportunity to exchange ideas, build relationships, and grow your network in a supportive environment. Connect with like-minded individuals, explore potential partnerships, and discover new opportunities for professional growth. Don't miss out on this chance to enhance your business network and take your career to the next level with CONNECTED Westerville Mastermind Group! We meet the 4th Monday of every month from 11am-1pm. Welcome and general networking from 11am - 11:30am with core meeting 11;30 - 12:30 and a final round of networking from 12:30 - 1pm.

**Practical Curiosity: Learning from Everyday Data** How do we actually get better at utilizing our day-to-day data? Fancy dashboards and complex models might look nice and draw attention, but that’s not where most of us spend our time. In fact those shiny outputs frequently sit unused, while the real insights are drawn from the analyst’s daily practice. Sometimes it’s as simple and as powerful as noticing that a segment is shrinking, a channel is underused, or certain links keep getting all the clicks. There’s many different places that the spark of insight can come from, but you have to keep your head in the data and know where to look. In this session, we’ll explore real-world examples of how segmentation, testing, and click behavior can uncover practical digital marketing opportunities. You’ll leave with inspiration for your own use cases, along with a few simple ways to ask better questions, spot meaningful patterns, and make smarter decisions without overcomplicating it. **About Our Speaker:** [Elaine Armbruster](https://www.linkedin.com/in/elainearmbruster/) is a Director of Digital Experience at the [American Diabetes Association](https://diabetes.org/), where she focuses on using data and insights to create smarter, more effective digital experiences. A lifelong Columbus resident, she has built her career in email marketing and the broader digital user journey, and is finding she most enjoys working in the messy middle where systems, data, and big ideas don’t quite line up yet. Thanks to our 2026 sponsors: [Clarivoy](https://www.clarivoy.com), [What Box Consulting Group](https://www.whatboxconsultinggroup.com), [Conductrics](https://www.conductrics.com), and [Piwik PRO](https://piwik.pro) More info at [cbusdaw.com](https://cbusdaw.com)

It’s time to take control of your mental health. How do you get rid of stress, anxiety and uncertainty? These emotions are buried deep in your reactive mind. Find out what the reactive mind is, and in the process find yourself. Have you ever suffered from a traumatic experience, a deep loss or been through a painful breakup? Has your ability to communicate suffered as a result? And after that, even though you "moved on" did you find that things were never quite the same? Have you ever looked at childhood photos, or reminisced your early life and wondered where that happiness and spark went? Are your emotions out of your own control? Have you ever felt, even if you aren’t aware of it, that possibly you are getting in your own way of your happiness and success? How does this affect your self-confidence? Find out what is at the root of all stress, anxiety, depression and self-doubt. Find out how and why you hold yourself back from achieving your goals and having the life you have dreamed of. As soon as you learn what is at the root of these unwanted conditions, you’ll see it is something you can DO something about. You will not be labeled or categorized at this MeetUp.