GNU Linux

*We have limited space, but we will do our best to record the event and publish on our [YouTube channel](https://www.youtube.com/channel/UC_a-vGdkAIRMKT1zzZ4I2ag) soon afterwards.* \-\-\-\- \-\-\-\- \-\-\-\-\- Flutter London will be back with another exciting event for 2026! We look forward to seeing some familiar and new faces. We are excited to announce the next FlutterLDN on ***Tuesday 14th April*** is being hosted at [Pod Point](https://pod-point.com/), (thanks go to [Few&Far](https://www.fewandfar.io/) for helping to arrange this). We're thrilled to deliver the familiar setup we all cherish and enjoy. Join us for an evening filled with insightful talks, networking opportunities, and a delightful surprise spread of food and drinks, thoughtfully put together by [George](https://georgemedve.co.uk/) and [Tom](https://www.linkedin.com/in/tomshannon1/) team - guaranteed to impress and satisfy. **The venue address is:** [Pod Point](https://pod-point.com/) 222 Gray's Inn Road, London, WC1X 8HB maps: [https://maps.app.goo.gl/vzLKj7G47u8ReRjw7](https://maps.app.goo.gl/vzLKj7G47u8ReRjw7) ⏰ **Schedule:** [6:00pm] Arrival & registration [6:15pm] Drinks and snacks and socialising (sponsored by [Pod Point](https://pod-point.com/) and Few&Far) [6:45pm] Introduction from FlutterLDN and [Few&Far](https://www.fewandfar.io/) [7:00pm] **Talk 1:** Raouf Rahiche \| Make Every Minute Count in Your Flutter Pipeline [7:45pm] **Talk 2:** Matt Meades \| Powering the Tewke smart light switch with Flutter [8:30pm] Q&A and networking [9:00pm] Drinks and chat: TBD \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- 🌟**Talks and Speaker Information:** **// 🚀 Talk 1:** Raouf Rahiche \| Make Every Minute Count in Your Flutter Pipeline A practical tour of the optimizations that can speed up your Flutter CI significantly; selective native builds, Dart-only snapshots, modular parallelization, test bundling, and smarter coverage collection. *Tags:* **\-\-\-\-** // Raouf's Links Github: [https://github.com/Rahiche](https://github.com/Rahiche) X/Twitter: [https://twitter.com/raoufrahiche](https://twitter.com/raoufrahiche) LinkedIn: [https://www.linkedin.com/in/raoufrahiche/](https://www.linkedin.com/in/raoufrahiche/) **// 🚀 Talk 2:** Matt Meades \| Powering the Tewke smart light switch with Flutter Tewke’s 5 year journey developing a touch screen light switch using Flutter on an embedded device. *Tags:* Flutter, Embedded Linux, Smart home, IoT, Performance Optimisation, Yocto, DBus, Systemd, Flutter-Rust bridge // links: LinkedIn: [https://www.linkedin.com/in/matthew-meades/](https://www.linkedin.com/in/matthew-meades/) BlueSky: X/Twitter: Github: **FlutterLDN:** BlueSky: [https://bsky.app/profile/flutterldn.dev](https://bsky.app/profile/flutterldn.dev) X/Twitter us @FlutterLDN [https://x.com/FlutterLDN](https://x.com/FlutterLDN) Flutter London YouTube channel: [http://bit.ly/2yZLTTb](http://bit.ly/2yZLTTb) See you there! **[George Medve](https://www.linkedin.com/in/georgemedve/)** is Professional Mobile App Consultant and building and scaling teams for success. **[fewandfar](https://www.fewandfar.io/)** is a Tech, Product, Data and Design recruitment company, **[Tom Shannon](https://www.linkedin.com/in/tomshannon1/)** who heads up mobile hiring and will be at the event.

We're excited to be back and pleased to say this event is being sponsored by [pgMustard](https://pgmustard.com). On the talks front, we have **Anton Borisov and Vlad Bokov** from Fresha who will take us through how they recently upgraded their fleet with zero-downtime. We will then host our first ever debate, on a topic to be determined! WHERE Join us at **Doggett's Coat and Badge on 14 April from 18:30.** PROGRAM 18:30 Welcome 19:00 Swapping the Elephant Without Breaking the Room: Zero-downtime Major PG upgrades in practice (Anton Borisov and Vlad Bokov, Fresha) - abstract below 19:45 Sandwiches and bar snacks (paid for by our sponsor) 20:00 Debate — topic TBD ABSTRACT **Swapping the Elephant Without Breaking the Room: Zero-downtime Major PG upgrades in practice** Upgrading PostgreSQL across hundreds of production databases without downtime sounds impossible, especially when logical replication slots, Debezium CDC pipelines, and outbox event streams are in play. At Fresha, we faced exactly that: mission-critical workloads still on PostgreSQL 12, and no safe way to reach 17 without freezing the business. This talk walks through how we designed and automated a blue-green upgrade framework using logical decoding, controlled WAL overlap, and connector orchestration. We’ll dive into how Debezium connectors, replication origins, and PgBouncer pools were coordinated to guarantee continuity for both CDC and outbox topics, with rollback and dry-run modes built in. Attendees will learn practical techniques for: * Orchestrating zero-downtime Postgres major upgrades on RDS or self-managed clusters * Managing replication slots and Debezium connectors safely across clusters * Handling sequence alignment, WAL overlap, and connector state transitions * Designing reversible, testable database cutovers This is a practical session from real production experience: no magic tools, just PostgreSQL internals, Debezium, careful planning, and a few well-placed bash scripts. SPEAKERS **Anton Borisov** architects real-time data systems centered on PostgreSQL. At Fresha, he designs zero-downtime migrations, Debezium-based CDC pipelines, and overall data strategy integrating Postgres with Kafka and Flink. His work spans query planning analysis, partitioning and indexing, autovacuum and bloat optimization, and performance tuning under high-concurrency workloads. He also builds downstream lakehouse integrations with Iceberg, Paimon, and StarRocks. Anton publishes technical deep-dives on PostgreSQL internals, streaming infrastructure, and production reliability at medium.com/@borzoniusy **Vlad Bokov** is a Staff Engineer at Fresha working on systems behind activity feeds and communication between partners and customers. He deals with what breaks at scale: PostgreSQL under heavy write load, WAL bottlenecks, replication issues, Kafka pipelines, and zero-downtime migrations. Most of his work is about making production systems behave: fixing what is slow, unstable, or too expensive, and making trade-offs that hold up under pressure. He works across Snowflake, StarRocks, PostgreSQL, Elasticsearch, and Redis, and is currently exploring newer streaming approaches, including Apache Fluss, for real-world workloads. *** THE OFFICIAL BITS The meet-up abides by [PostgreSQL Code of Conduct](https://www.postgresql.org/about/policies/coc/). Postgres, PostgreSQL and the Slonik Logo are trademarks or [registered trademarks of the PostgreSQL Community Association of Canada](https://www.postgresql.org/about/policies/trademarks/), and used with their permission.

# Claude Code for GTM — Live workshop in London 🇬🇧💥 BRING your Laptops! 👩‍💻👨‍💻 Most Claude Code events today are built **for engineers**. But marketers, growth teams, and GTM leaders are starting to realize something important: **Claude Code can automate a huge portion of marketing workflows.** From **ABM account list building, through ad creation based on your top performing ads, to landing page generation and results analysis and reporting -** Claude code can be the most powerful productivity multiplier for GTM teams. BUT how to set it all up? 👀 🤷‍♀️ This live workshop will show **exactly how you can use Claude Code for GTM - Account Based Marketing (through LinkedIn specifically)** No prior coding experience required! A team of experienced GTM You will need a Claude account to get started. Agenda: 6:30 - arrival and registration + pizza/snacks + networking 7:00 - 7:30 - environment setup ​7:30 - 9 pm - Claude Code for GTM (ABM edition) hands-on workshop, covering topics like: * ​How to automate outreach to most engaged accounts: \- analyse your campaign & ad results using ZenABM API & Hubspot MCP \(free\) in Claude \- generate personalized outreach copy based on intent signals * ​How to use Clude Code for asset generation at scale: from personalized landing pages, through ads and videos * ​How to use Clude Code for target account list building ​9 pm - 10:00 Q & A and networking ​Don't miss this opportunity to master one of the most powerful AI tools available! ​All participants who stay till the end will get a certificate of completion, ZenABM credits, and a surprise gift bag from sponsors 💥 Venue: Central London, TBC soon!

uSwitch is located on the first floor of the ZPG building at 5 Copper Row, London, SE1 2LH, London (Click on the map for directions) What 3 words location: [https://what3words.com/puts.sudden.else](https://what3words.com/puts.sudden.else) The Clojure dojo is a collaborative way to learn Clojure/ClojureScript through practice. The aim is to learn a little more than before you started. This event is for those new to coding through to more experienced developers. We organise into small groups (2-4) people and write code to solve challenges great and small, chosen by those at the event. We aim to ensure someone in your group has some Clojure experience, so you shouldn't feel lost (well no more than all developers do when Stack Overflow is broken). Example challenges for the coding dojo are listed on this website: http://www.londonclojurians.org/code-dojo/ Various past exercises have been loaded to [https://github.com/ldnclj](https://github.com/ldnclj/lisp1.5/blob/master/src/lisp1/5.clj) # Approximate schedule: 18:40 Doors open and start collecting suggestions 18.45 Pizza should have arrived 19:00 Quick intros and vote on suggestions 19:15 Break out into groups and start practising 20:45 Gather together for a quick show and tell # What should I bring? We organise into small groups, so if you have a laptop with a working Clojure environment please bring it along (there are lots of online Clojure environments, so you can just use your browser too). # How do I get in to the building? At the glass doors press the buzzer to inform the security guard you are here. Say you are here for the event on the first floor. Is there way to talk with the Clojure community? Why yes. The Clojurians Slack channel is full of friendly people who love to try and help. People based in London are often in the #clojure-uk channel. Sign up for a free account to the Clojurians Slack community via http://clojurians.net/ What is Clojure? Clojure is a JVM language that has syntactically similarities to Lisp, full integration with Java and its libraries and focuses on providing a solution to the issue of single machine concurrency. Its small core makes it surprisingly easy for Java developers to pick up and it provides a powerful set of concurrency strategies and data structures designed to make immutable data easy to work with. If you went to Rich Hickey’s LJC talk about creating Clojure you’ll already know this, if not it’s well worth watching the Rich Hickey “Clojure for Java Programmers” video or Stuart Halloway “Radical Simplicity” video .

Join us at our next Emacs London meetup held at University College London (UCL) on Tuesday 14 April. A projector will be available, if anyone wants to give a presentation and/or if helpful to share Emacs tips, for some collaborative debugging, etc. We might head to a pub for a drink and/or a nibble afterward. Emacs users of all levels welcome! Interested in Emacs but not really a user? You're more than welcome too! **Call for presentations** Fancy talking about your favourite Emacs package? Proud of your latest Emacs Lisp hack and you want to tell everybody? Anything parenthesis-related that's bugging you? There'll be a monitor waiting for you for a short presentation!

Dance Fitness Party Tuesdays (for adults) When and where? Each Tuesday evening @ 7PM - 7:45 PM in the dance studio at St James' Catholic High School. Enter through St James Catholic High School Staff Car Park, Grahame Park Way, Colindale, NW9 4AN Start your week with a burst of energy and joy in this exclusive evening dance fitness session! A fun and energising way to boost your mood, movement, and mindset after a long weekend. Led by Mau – an international dance instructor with experience in Kazakhstan, Bolivia, Paris, and the UK. Learn to dance while you get fit! Expect: Latin party vibes including all types of Salsa, all types of Bachata, Merengue, Reggaeton \> Plus music and dance routines from around the world\, including Bollywood\, Hip Hop\, 80s\, 90s\, Greek\, Afrobeats and more\. \> Dance\-offs\, group routines\, dance tunnels and more surprises No dance experience needed! This class is inclusive, upbeat, and fun. Benefits: ✓ Burn calories & stress ✓ Boost confidence & rhythm ✓ Laugh, connect & feel amazing Payment options: 1\. £15 for 1 class drop\-ins 2\. £32 for a block booking of 4 weeks of classes 3\. Otherwise £49\.99 membership per month for unlimited dance fitness party classes \(including dance fun runs\, Dancing in the Park and MoveFest\)\. Questions? Contact 07950 268600 on WhatsApp

Register: [https://luma.com/z5aztkqh](https://luma.com/z5aztkqh) Calling all developer and graph enthusiasts for an evening of delve into the nuts and bolts of constructing memory-enabled applications that perform at scale. ​**Speakers:** 1. ​**[Aga Kopytko](https://www.linkedin.com/in/akopytko/)**, CTO **[Smabbler](https://www.smabbler.com/)** - *Life-long hypergraph memory* 2. ​**[Yusuf Abdulle](https://www.linkedin.com/in/yusufab/),** PhD **[King's College London](https://www.drive-health.org.uk/) -** *Knowledge graphs and LLMs in rare diseases* 3. ​***[Sefik Serengil](https://www.linkedin.com/in/serengil/),*** *Senior Software Engineer,* ***[Neo4j ](https://neo4j.com/)****\- LLMs can be terrible interns \- but GraphRAG and tools turn them into stars* 4. ​***[Ovidiu Serban](https://profiles.imperial.ac.uk/o.serban),*** *Research Fellow,* **[Imperial College London](https://profiles.imperial.ac.uk/o.serban) -** *How ready are we for Temporal Knowledge Graphs?*

**Beginner Friendly Mixed Gender Football** A friendly mixed gender football game in Regents Park. Equipment such as balls, goals and bibs will be provided. This is a beginners only game. We aim to have roughly equal numbers of men and women for each game. This is the **Mens Signup Page**. Please check the [meetup page](https://www.meetup.com/socialsportsmix/) page for the Womens Sign up Page. We also welcome non-binary and other genders to join us. **Can't put yourself down as attending or on the waitlist?** Our mixed football games are usually oversubscribed for men and so we only guarantee places for: **1\. Those who are able to bring a woman or non binary player** Please message the organiser if you can are interested in attending and can bring a woman player. We encourage couples in particular as it's a great activity for you to do together. **2\. Those who donate to our supported charity** We also currently offer 3 special invitations per event for those who are happy to donate a minimum of £5 to our supported charity. We would like our events to raise awareness and money for worthwhile charities. For more info, please visit: [https://www.justgiving.com/page/social-sports-mix-warchild](https://www.justgiving.com/page/social-sports-mix-warchild) Please get in touch with the organiser if you're interested in a charity place. We are strict in our aim in getting equal numbers and men and women for each game. We also have limits to the number of people we can accommodate. **If you turn up without invitation, you might not be able to participate.** **How it works** We meet at the venue to organise teams and for everyone to get to know each other. Here is where we meet: [https://www.socialsportsmix.co.uk/regents-park-football-and-rounders](https://www.socialsportsmix.co.uk/regents-park-football-and-rounders) This is a friendly game, no hard tackles or aggression! We will play for 60-90 minutes depending on how we all feel. You can leave early if you need to. If there is no Goalkeepers, players who are willing to go in goal will rotate every 8 mins. We recommend you bring shinpads and water. Here are our Terms and conditions [http://www.socialsportsmix.co.uk/terms-and-conditions](http://www.socialsportsmix.co.uk/terms-and-conditions)

**Beginner friendly mixed football** A friendly mixed gender football game in Regents Park. Equipment such as balls, goals and bibs will be provided. You will have the choice of playing in a beginner friendly or intermediate level game. We aim to have roughly equal numbers of men and women for each game. This is the **Womens Signup Page**. Please check the [meetup page](https://www.meetup.com/socialsportsmix/) for the Mens Sign up Page. We also welcome non-binary and other genders to join us. **About Social Sports Mix** Social Sports Mix is for anyone interested in playing mixed gender sports and meeting new people in London. This event happens every Sunday throughout the Summer. You can join our events as an individual or with friends. There is no commitment to come weekly required and we welcome beginners. **How it works** We meet at the venue to organise teams and for everyone to get to know each other. Here is where we meet: [https://www.socialsportsmix.co.uk/regents-park-football-and-rounders](https://www.socialsportsmix.co.uk/regents-park-football-and-rounders) This is a friendly game with no hard tackles or aggression! We will play for 60-90 minutes depending on how we all feel and there will be a half time. There is no pressure to stay for the entire event and you can leave early if you need to. If there is no Goalkeepers, players who are willing to go in goal will rotate every 8 mins. We recommend you bring shinpads and water. We usually go for drinks in the pub or have a picnic in the park after. **Free or play for charity** Our Sunday football events are free for everyone. The organisers volunteer their time and fund for the equipment, public liability insurance, marketing and meetup costs to make this happen. We would like our events to raise awareness and money for worthwhile charities. If you appreciate our events, please consider making a donation on our fundraising page. To donate and for more info, please visit: [https://www.justgiving.com/page/social-sports-mix-warchild](https://www.justgiving.com/page/social-sports-mix-warchild) Here are our Terms and conditions [http://www.socialsportsmix.co.uk/terms-and-conditions](http://www.socialsportsmix.co.uk/terms-and-conditions)

Our classic pub crawl! You will meet your pub crawl buddies at Liverpool Street Station (meet at the Pin!) before making your way to these pubs. Make sure to show our meeting point photo so that you can find all members! Start at: Hamilton Hall: Liverpool St, London EC2M 7PY (Closes at 11.30pm) Next stop Dirty Dicks: 202 Bishopsgate, London EC2M 4NR (Closes at 12am) End your night at Commercial Tavern: 142 Commercial St, London E1 6NU (Closes at 1am)

🎉 Come along to the London Scala Talks! 🎉 In this event you'll hear from Haoyi Li, Martin Durchov and Adam Deegan. **Agenda** 6:00pm - 🥤 Doors open. Come along and grab a drink! 6:35pm - 🗣️ Introduction 6:40pm - 🗣️ Haoyi Li: Scripting on the JVM with Scala 7:20pm - 🍕 Intermission: Join us for some free food and drinks! Vegan, vegetarian options are provided. Let us know if you'd like something special - we'd be happy to accommodate. 7:50pm - 🗣️ Martin Durchov: ScalaMeta: Treating Scala code as data 8:10pm - 🗣️ Adam Deegan: Practical Java Interop for Scala Effect Systems 8:30pm - 🥤 Socialising: Grab a drink and let's discuss the talks. 9:00pm - 🍻 Join us in a pub to discuss the talks! 🌐 **This event may have a live stream** Watch this space for more details. **🗣️ Haoyi Li: Scripting on the JVM with Scala** This talk will explore the use of Scala as a scripting language, replacing the Bash and Python scripts common throughout the industry. ⭐ Haoyi Li ⭐ Li Haoyi graduated from MIT with a degree in Computer Science and Engineering, and since then has been a major contributor to the open source community. His projects have over 10,000 stars on Github, and are downloaded over 20,000,000 times a month. Haoyi professionally built distributed backend systems, programming languages, high-performance web applications, and much more. **🗣️ Martin Durchov: ScalaMeta: Treating Scala code as data** Scala source code is usually something we write and hand off to the compiler. But what if we could parse it, inspect it, build it, and transform it all from regular Scala code? ScalaMeta is the metaprogramming library that makes this possible, and it underpins a lot of modern Scala tooling ecosystems: Scalafmt, Scalafix, and Metals are all built on it. In this talk we'll look at what ScalaMeta is, how its AST models Scala programs, and the core operations it provides: parsing, quasiquotes, tree traversal and more. We'll then turn to how we use it at Quantexa, where it powers code generation for our clients. Along the way we'll cover practical patterns that make code generation manageable at scale, and the rough edges you should know about before adopting it yourself. ⭐ Martin Durchov ⭐ I graduated from UCL in 2019 with a MSci in Theoretic Physics and started work in TxOdds, a small company focused on ultra-fast data streaming and processing, where I first encountered Scala, working with Typelevel libraries. Since January 2025 I have been working at Quantexa in the team responsible for data ingestion and processing also relying heavily on the Scala functional libraries and ScalaMeta. **🗣️ Adam Deegan: Practical Java Interop for Scala Effect Systems** Interfacing with a highly autonomous Java library in a functional manner is difficult. In this talk we'll explore the ways in which we've approached this; issues we found along the way; and the trade-offs between purity and pragmatism when there's a runtime which isn't yours to control. ⭐ Adam Deegan ⭐ Adam Deegan graduated from the University of Bristol with a degree in Computer Science in 2021 and has worked at Quantexa ever since. He started off as a Data Engineer and moved into software engineering a couple of years ago, working on the addition of a case management capability. His first true programming love was making Minecraft mods. ———————————————————— 🗣️ Would you like to present, but are not sure how to start? Give a talk with us and you'll receive mentorship from a trained toastmaster! Get in touch through [this form](https://forms.gle/zv5i9eeto1BsnSwe8) and we'll get you started 🏡 Interested in hosting or supporting us? Please get in touch through [this form](https://forms.gle/3SX3Bm6zHqVodBaMA) and we can discuss how you can get involved. 📜 All London Scala User Group events operate under the [Scala Community Code of Conduct](https://www.scala-lang.org/conduct/). We encourage each of you to report the breach of the conduct, either anonymously through [this form](https://forms.gle/9PMMorUWgBnbk1mm6) or by contacting one of our team members. We guarantee privacy and confidentiality, as well as that we will take your report seriously and react quickly.

🚀 NSLondon Social Meetup – Building an iOS app? Come share it! Join us on April 18th from 11:00–13:00 for our next NSLondon meetup - a relaxed, social session focused on sharing apps, ideas, and feedback We’re meeting at WatchHouse by Hyde Park ☕️, then (weather permitting) heading out for a casual stroll through the park 🌿 What to expect: • Share and review what you’re currently working on • Get friendly, practical feedback on your apps and ideas • Chat with other iOS developers, designers, and indie builders No pressure, no presentations — just bring what you’re working on (or curiosity). Please RSVP on Meetup if you’re planning to come — looking forward to seeing you there!

**Welcome to DSF Sandbox Sessions!** Top tech talks and masterclasses from the best in the industry. Every month, and completely free. The catch? There isn’t one. Just a monthly dose of epic content to power up your data passion! **Event details** 📆 **Date:** Tuesday 14th April 2026 ⏰ **Time:** 6:00 – 9:30 PM BST 💡 **Topic:** **Signals, Systems, and Scams: Deconstructing the Future of Financial Intelligence** 🗣️ **Speakers:** Kristjan Erik Liive, Volodymyr Panov, Baran Koseoglu, Zoltan Szopory, Vera Shishkina, Aaron Wilson, Mohammed Topiwalla [Sign up for this event by clicking here!](https://datasciencefestival.com/session/wise-sandbox-session/) As global financial platforms evolve, the “Trust Gap” becomes an engineering challenge. Scaling a product to millions of users requires more than just better models—it requires a fundamental shift from manual heuristics to automated, high-fidelity intelligence. Join Wise for an exclusive Sandbox Session designed for senior data scientists and engineers. We’re moving beyond the basics of model training to explore the “Last Mile” of production ML: the infrastructure of compliance, the democratisation of optimization, and the transition to foundational representation learning. Through three practitioner-led deep dives and a collaborative product-data science panel, we will deconstruct how Wise builds resilient financial infrastructure where performance and safety are never a zero-sum game. What we’ll explore: • The GenAI Reality Check: Moving LLM automations from “cool demo” to “compliant production” in highly regulated spaces. • Decoupling Optimization: How we built “Threshold UI” to empower non-experts to tune model performance across hundreds of cohorts without a single code change. • Beyond Velocity: Replacing hand-crafted features with User Event Transformers to capture the deep behavioral context that traditional tabular data misses. • The Co-Design Philosophy: Why the future of fraud prevention isn’t just a better algorithm, but a tighter feedback loop between Product and Data Science. Food, drinks, and networking with fellow practitioners will follow throughout the evening. Check out the full session details below! **Please note: Due to high demand and limited capacity, tickets for this event will be allocated via a random ballot. Submitting an application does not guarantee entry. Successful applicants will be notified throughout March and early April. If you have not received confirmation by April 9th, this means your ballot application was not selected on this occasion.** **Talk 1: Evolution of GenAI: Building Compliant LLM Automations at Wise** **Speakers:** Kristjan Erik Liive, Senior Data Scientist & Volodymyr Panov, Senior Data Scientist. **Abstract:** Evolution of GenAI applications in servicing tasks at Wise. We will share examples, discuss architectures and challenges of building LLM-based automations in compliance-heavy space. We will also present our vision and key opportunity areas in further augmentation and automation. **Key takeaways:** Practical examples of scoping and implementing LLM-based solutions. **Talk 2: On the Threshold of Greatness: Democratizing Model Optimization at Wise** **Speakers:** Baran Köseoğlu, Lead Data Scientist & Zoltán Szopory, Staff Software Engineer. **Abstract:** This session will talk about machine learning model threshold optimization across hundreds of customer cohorts. Traditionally, optimizing these thresholds has been a complex, time-consuming task, often relegated to highly technical experts. At Wise, we faced the challenge of managing diverse customer segments, each with unique risk profiles and compliance mandates and as a solution we developed Threshold UI we will talk about more in the session. **Key takeaways:** Boost your machine learning model performance without changing any configuration in your training pipeline. **Talk 3: More Than Meets the Eye: Transforming User Events into Deep Context** **Speaker:** Vera Shishkina, Staff Data Scientist. **Abstract:** Moving from purely manual feature engineering to representation learning. This session covers the technical POC of a User Events Transformer – a foundational model designed to produce customer embeddings that augment traditional tabular features. We will discuss the proposed architecture, the challenges of building temporal data pipelines, and our vision for using these embeddings to boost performance in domains like scam prediction. **Key takeaways:** How learned embeddings provide deep context that traditional “velocity” features often miss. **Talk 4: Panel Discussion – Mind & Machine: How Product and DS Co-Design the Future of Trust** **Panellists:** Aaron Wilson, Fraud and Victim Prevention Product Lead & Mohammed Topiwalla, Fraud and Victim Prevention Data Science Lead. **Abstract:** Fireside chat to understand how DS and Product work hand in hand to keep wise safe. **Key takeaways:** How do you find the middle ground between business growth and risk precision? What is the future of DS in fraud prevention? **Schedule:** **6:00 PM** – Doors open – networking with food and refreshments **6:45 PM** – Intro **6:50 PM** – Talk 1 (20 minutes + 5 minute Q&A) **7:15 PM** – Talk 2 (20 minutes + 5 minute Q&A) **7:40 PM** – Comfort break **7:50 PM** – Talk 3 (20 minutes + 5 minute Q&A) **8:15 PM** – Talk 4 (30 minutes) **8:45 PM** – Networking with refreshments **9:30 PM** – Event close **Registering for the event:** Click the 'Sign up here!' button on the specific event page following the link below. Once you have completed the registration form, you will be emailed a link to join the webinar. You will also receive a reminder link one week, one day and one hour prior to the event. **PLEASE NOTE: Clicking 'attend' on Meetup does not register you for the event. You will need to register for the event on the link provided below to receive a joining link. If you do not, you will not be able to join the event.** **[Click here to sign up for this specific event](https://datasciencefestival.com/session/wise-sandbox-session/)** Please note the time zone when you book this event.

Written in a deceptively simple, almost laconic style Borges takes us inside the minds of an unrepentant Nazi, an imprisoned Mayan priest, fanatical Christian theologians, a woman plotting vengeance on her father’s “killer,” and a man awaiting his assassin in a Buenos Aires guest house. In maddeningly ingenious stories that play with the very form of the short story, Borges returns again and again to his themes: dreams, labyrinths, mirrors, infinite libraries, the manipulations of chance, gaucho knife-fighters, transparent tigers and the elusive nature of identity itself. We will be reading the Penguin edition of The Aleph and Other Stories which contains the following stories: "The Immortal" ("El inmortal") "The Dead Man" ("El Muerto") "The Theologians" ("Los teólogos") "Story of the Warrior and the Captive" ("Historia del guerrero y la cautiva") "Biography of Tadeo Isidoro Cruz" ("Biografía de Tadeo Isidoro Cruz (1829–1874)") "Emma Zunz" "The House of Asterion" ("La casa de Asterión") "The Other Death" ("La otra muerte") "Deutsches Requiem" ("Deutsches réquiem") "Averroes's Search" ("La busca de Averroes") "The Zahir" ("El zahir") "The Writing of the God" ("La escritura del dios") "Ibn-Hakam al-Bokhari, Murdered in His Labyrinth" ("Abenjacán el Bojarí, muerto en su laberinto") "The Two Kings and the Two Labyrinths" ("Una leyenda arábiga" ("Historia de los dos reyes y los dos laberintos, como nota de Burton") ) "The Wait" ("La espera") "The Man on the Threshold" ("El hombre en el umbral") "The Aleph" ("El Aleph") Available from all good libraries and book shops. You don't have to have read it to join us - but it'll probably help. We will be meeting in The Ludski Bar in the Rio Cinema. [https://www.riocinema.org.uk/your-visit/](https://www.riocinema.org.uk/your-visit/) You are welcome to bring outside food in with you but please buy your drinks from inside the cinema. Thank you. We hope to see you there. ... To join the Brain Worms WhatsApp Group please click here: [https://chat.whatsapp.com/EvFibn1d6AsEwdVGmwkhko](https://chat.whatsapp.com/EvFibn1d6AsEwdVGmwkhko) (in order to stop spam bots this will take you to a Waiting Room. Once in please write your name and we will join you to the main chat). Meetup charges subscription fees. If you would like to make a donation please click here: [https://paypal.me/philosophycollective](https://paypal.me/philosophycollective)

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

**💥 Join us THIS Saturday and EVERY Saturday!** **💥 At Columbus’ Hottest New Salsa Venue!** **.** Lincoln Street Salsa THIS Saturday and EVERY Saturday! 8 pm – 1 am **.** **💥 Gorgeously Renovated Studio!** **💥 Free Parking!** **💥 BYOB!** **💥 Easy Access from Highway!** **.** Lincoln Street Salsa 1717 Brice Rd Reynoldsburg, Ohio 43215 **.** **ENTRANCE IS ON THE NORTH SIDE OF THE BUILDING** **Behind Anthony’s Pharmacy!** **.** **PLEASE SHARE and help get the word out!** **.** **🟣 Salsa, Bachata, and Merengue Dancing!** **.** **🟣** 8:00 pm – 8:30 pm **𝗥𝗲𝗴𝗶𝘀𝘁𝗿𝗮𝘁𝗶𝗼𝗻** **.** **🟣** 8:30 pm – 9:30 pm **𝗕𝗲𝗴𝗶𝗻𝗻𝗲𝗿 𝗗𝗮𝗻𝗰𝗲 Class!** **.** **🟣** 9:30 pm – 1 am **𝗢𝗽𝗲𝗻 𝗗𝗮𝗻𝗰𝗲 𝗣𝗮𝗿𝘁𝘆!** **.** **✅ Questions?** **Visit [LincolnStreetSalsa.com](https://columbussalsadancing.com/)** Or Text Todd: 614-774-8146 **.** **✅ No Experience Necessary!** **✅ No Partner Required!** **✅ Plenty of People to Dance With!** **.** **✅ $15 Cash / $16 Card** **✅ College Students $5 Off with Valid ID!** **✅ BYOB** **✅ Age 18+** **.** **✅ Lincoln Street Salsa is the perfect place for…** **.** **👉 Learning to Dance** **👉** Social Dancing **👉 Birthday Celebration** **👉** Bachelorette Parties **👉 Girl’s Night Out** **👉 Date Night** **👉** Getting Fit / Burning Calories **👉 Meeting New People** **👉** Having Fun, Fun, Fun! **.** ✅ **Questions?** Visit [LincolnStreetSalsa.com](https://columbussalsadancing.com/ "https://columbussalsadancing.com/") Or Text Todd: 614-774-8146 .

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/

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** GitHub Copilot is powerful, but what if you could scale from a solo AI assistant to an entire team of specialized agents working in parallel? This session introduces Squad: an open-source framework for multi-agent orchestration that lets you define teams of AI agents with specific roles, responsibilities, and expertise. We'll progress from Copilot basics to the Copilot CLI, explore how Agents add autonomy, and see how Instructions and Skills let you customize agent behavior. Then, the climax: a live demo where a Squad team of 3 agents (Lead, Developer, Tester) stands up and builds a working application in real-time, showcasing true multi-agent collaboration. Whether you're new to AI or exploring how to scale your use of Copilot, this session will show you what's possible when agents work as a team. **YouTube Link** TBD

We practice, dance, and enjoy a BYOB bottle of your favorite wine at the Dublin Ballroom off Sawmill, North, and “milonga” is a social event for tango dancing where dancers socialize. A “*practica*” is an informal social event for tango dancing where dancers focus on practicing the dance; while a “*practilonga*” combines the relaxed atmosphere of a “*practica*” with the format of a “milonga.” We are doing it all! ***Cost is $10 payable to the Teacher.*** *Cost is for the cost of the venue and covers some snacks.* We have had fun doing this event in the past. Please arrive promptly as lessons begin at 2pm. Don't worry about bringing a partner as there will be others at the event from outside the group that: a) might have a clue and b) won't step on your toes. The event is BYOB (similar to our Salsa events), so bring your favorite and a wine glass. We will likely find a place for dinner and drinks after the dance.

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