Database Professionals

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.

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?*

**Welcome to Networx London!** Are you a real estate investor, property developer, or industry professional looking to connect with others shaping the future of property? Join us for a relaxed and engaging evening designed for innovators, leaders, and changemakers in real estate, property investment, and development. Whether you’re an agent, broker, developer, investor, architect, interior designer, property manager, or aspiring entrepreneur—this is your space to meet like-minded people, exchange ideas, and spark new opportunities. We start at **6:30 PM** with a warm welcome and light icebreakers to get conversations flowing, followed by **open networking all evening**. No formal pitches—just real connections, fresh ideas, and meaningful relationships in a friendly, laid-back setting. 👉 **Join us on Luma for deeper connections and connect before the event even starts** [https://luma.com/ntl](https://luma.com/ntl) 📍 **Venue: The Sycamore, Holborn** Located in the heart of London’s vibrant Holborn district, The Sycamore offers a modern and stylish setting with a relaxed, welcoming atmosphere—perfect for networking and socializing after work. Just steps from Holborn station, and easily reachable from Covent Garden, it provides an ideal environment for professionals to connect, share ideas, and enjoy great conversations over drinks. Come join us, grab a drink, and grow your network—one meaningful conversation at a time. 📅 **Event Schedule** **18:30 – 19:00 \| Welcome** Kick off with a warm intro and fun icebreakers to set the tone. **19:00 – 19:30 \| Meet & Greet** Mingle and network in an open, friendly setting. **19:30 – 21:30 \| Informal Networking** Free-flowing, informal networking all evening—no sales, no pressure. Just authentic connections with amazing people. 💡 **Why Attend?** 🤝 **Build Connections** – Meet business leaders, investors, and professionals across London. 🚀 **Unlock Opportunities** – Find potential partners, collaborators, or clients. 📈 **Stay Ahead** – Explore the latest trends in real estate, investment, development, and urban planning. 👥 **Who’s coming?** This event is ideal for real estate investors, property developers, architects, interior designers, real estate agents, brokers, property managers, urban planners, construction professionals, and anyone passionate about the future of property and the built environment. **🎟 Tickets & Entry:** To avoid the venue getting overcrowded and ensure everyone enjoys an amazing night, we've introduced a small ticket price to keep things running smoothly. **Limited spots!** Register today and hit **Follow** for updates on future weekly events. 📸 **Event Photography:** Please note that photos and videos may be taken for promotional purposes. **Note**: Proof of ID required for alcoholic beverages. 18+ only. 🔗 \*\*Join our WhatsApp group to connect before and after the event:\*\*👉 [https://chat.whatsapp.com/GisOCaIiMeKEehV5Lv7qxg](https://chat.whatsapp.com/GisOCaIiMeKEehV5Lv7qxg "https://chat.whatsapp.com/GisOCaIiMeKEehV5Lv7qxg")

**Welcome to Networx London!** Are you a business owner, entrepreneur, or tech professional looking to build valuable connections? Join a relaxed and engaging evening designed for leaders and innovators across industries. Whether you're a CEO, executive, investor, finance expert, IT professional, business professional, or aspiring founder, this is your space to connect with like-minded people and spark new opportunities. We start at **6:30 PM** with a warm welcome and light icebreakers to get conversations flowing, followed by **open networking all evening**. No formal pitches just real connections, fresh ideas, and meaningful relationships in a friendly, laid-back setting. 👉 **Join us on Luma for deeper connections and connect before the event even starts** [https://luma.com/ntl](https://luma.com/ntl) 📍 **Venue: The Sycamore, Holborn** Located in the heart of London’s vibrant Holborn district, The Sycamore offers a modern and stylish setting with a relaxed, welcoming atmosphere—perfect for networking and socializing after work. Just steps from Holborn station, and easily reachable from Covent Garden, it provides an ideal environment for professionals to connect, share ideas, and enjoy great conversations over drinks. Come join us, grab a drink, and grow your network—one meaningful conversation at a time. 📅 **Event Schedule** **18:30 – 19:00 \| Welcome** Kick off with a warm intro and fun icebreakers to set the tone. **19:00 – 19:30 \| Meet & Greet** Mingle and network in an open, friendly setting. **19:30 – 21:30 \| Informal Networking** Free-flowing, informal networking all evening—no sales, no pressure. Just authentic connections with amazing people. 💼 **Bring Your Business Cards!** Want people to know what you do? Bring your business cards and share your story. It’s a great way for others to remember you and follow up after the event. 📝 **Have an idea for future events?** We want to hear from you! If there's a specific theme, industry focus, or type of event you’d love to see, let us know. We’ll have a dedicated space with a suggestion sheet where you can write down what you're looking for. Our team will review everything and work step-by-step to make it happen! 💡 **Why Attend?** Connect with Founders, Co-Founders, Entrepreneurs, and Startup Leaders in a relaxed and dynamic setting. Discover career opportunities, meet companies hiring top talent, and exchange insights with peers. Get inspired by new ideas and find partners, clients, or investors to grow your startup, project, or business. **Who Should Attend:** This event is perfect for Founders, Co-Founders, Entrepreneurs, Startup Leaders, Investors, Finance Experts, IT Professionals, and Business Professionals looking to expand their network, grow their business, or gain fresh perspectives from a diverse mix of startup leaders and innovators. **🎟 Tickets & Entry:** To avoid the venue getting overcrowded and ensure everyone enjoys an amazing night, we've introduced a small ticket price to keep things running smoothly. **Limited spots!** Register today and hit **Follow** for updates on future weekly events. 📸 **Event Photography** Please note that photos and videos may be taken for promotional purposes. 📸 \*\*Follow us on Instagram for updates and event news:\*\*👉 [@networxldn](https://www.instagram.com/networxldn/ "https://www.instagram.com/networxldn/") 🔗 \*\*Join our WhatsApp group to connect before and after the event:\*\*👉 [https://chat.whatsapp.com/GisOCaIiMeKEehV5Lv7qxg](https://chat.whatsapp.com/GisOCaIiMeKEehV5Lv7qxg "https://chat.whatsapp.com/GisOCaIiMeKEehV5Lv7qxg")

**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.

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!

Come and play tabletop games of all types, roleplaying, wargames, board game or card games. Many attendees just come to hang out, rummage through the bits box or paint models with new and old friends. We're part of the Safe Space Alliance and offer a welcoming space to all genders, LGBTQ+ and people of colour. The prices are £15 (2–3 people per table) using club terrain £20 (4+ people) using club terrain £3 per person for board games, RPGs, or using your own terrain £3 suggested donation for paint and chat Payable in cash on the night. Our lovely venue, the Karamel club, normally runs a bar, and the kitchen does excellent Vegan bar food and snacks. Found our more at https://www.hate-club.org.uk/

Host: Yash \*This event is a collaboration with other meetup groups and social networks and it will be well attended \*To attend this event you need to buy a ticket from [https://www.fatsoma.com/e/agbqkr7z/big-singles-social-at-home-grown-members-club-all-ages-welcome](https://www.fatsoma.com/e/agbqkr7z/big-singles-social-at-home-grown-members-club-all-ages-welcome) Join us to at the first event of the year, socialise like a royal, in an elegant and relaxed singles mix and mingle while enjoying luscious cocktails at the most exclusive venue! The event will not have any loud music, making the environment perfect for meaningful long conversations that will allow you to connect with the other attendees and get to know them! Whether you are looking for a partner or just to meet and connect with other people who are at the same phase of life, this the event for you! You never know who you meet in this evening and that is the beauty of it! You may find a friend forever, a party buddy, a partner in crime or a partner in life! Since this is a mix and mingle and not a speed dating there is no age range- in a social pool everybody is welcome and you can choose to speak to whoever you fancy. Connect with like minded people and open your social circle, enjoy chatting about anything and everything, with those you like, for as long as you like while sipping on the best cocktails in town made by award- winning mixologists. If you find somebody who you think you have a connection with, dare to ask their contact details right then and there... like the old times ;) Oh! and you don't need to ask the awkward question: 'so are you single?' because they all will be! You are welcome to arrive solo- most people do- or with friends, we will be there to welcome you, make you feel comfortable and act as the perfect glue among those who wish to. Attendees from past events always feel welcome and energised after our events. Our reputation says that we make the best events in London - so come and check by yourself! Home Grown is the private members’ club, not open usually to the public, set in a stunning six story Georgian building in the heart of Marylebone and part of the Home House Collection which exudes quality, sophistication and style. Hosting our event at Home Grown members club, with its home away-from-home atmosphere, is everything you could possibly want on a Saturday evening This is a unique opportunity to visit the venue which should not be missed! How to find us: When you arrive please come on the first floor . Any issue on the night feel free to contact Yash: 07774905462 or Marianna: 07949526733 Please Note: -Tickets need to be bought online and are not available at the door -Tickets are valid for entry till midnight -Dress code: Smart/ Elegant/Glamorous ( ripped jeans, t-shirts, hoodies, sportwear, sportshoes or trainers are not allowed) -A valid proof of ID (European Passport, Driving License, or Passport) is required upon arrival independently of the age for security reasons For general inquires or difficulties with your ticket booking feel free to e-mail us at benetoupromotions@gmail.com or call Marianna on: 07949526733 How to connect with us: Like and follow our facebook page: [https://www.facebook.com/mariannaland](https://www.facebook.com/mariannaland) Join our facebook group: [ https://www.facebook.com/groups/453202104877514](https://www.facebook.com/groups/453202104877514) Follow us on twitter:@Mariannasevents

🎉 **Event #23 – The Analytics Engineering Meet-up** 🎉 The London Analytics Engineering Meet-up - Hosted by Monzo! **Speakers:** [Pablo Fernandez](https://www.linkedin.com/in/pablofergui/) \- Head of Data & Analytics Engineering @ Lawhive [Federico Arduini](https://www.linkedin.com/in/federicoarduini/) \- Lead Analytics Engineer @ Checkout\.com 📅 **RSVP opens 27th March** (3.5 weeks before the event). This event will be **over-subscribed**, so set a reminder — you won’t want to miss it! 📍 **Agenda** 6pm – Doors open, networking, food & drinks 7pm – Talks kick off 8:30pm – More drinks & networking @ local pub This is a fantastic opportunity to connect with some of the UK’s top data professionals, share challenges, and exchange learnings. We are always looking to improve the event and get new ideas for talks, if you could please fill out a [feedback form](https://cognifysearch.com/the-london-analytics-engineering-meet-up-feedback-form/), this will help us continue to improve! The **Analytics Engineering Meet-up** is a community for data professionals working with the modern data stack, machine learning or AI. We host regular meet-ups featuring talks from data leaders building and scaling analytics, data platforms, and AI in forward-thinking teams. The community is ideal for Data Engineers, Analytics Engineers, Analysts, and those working in Data Science, Machine Learning, or AI. The **Analytics Engineering Meet-up** is organised by [Cognify](cognifysearch.com) — a specialist recruitment partner for teams working across the modern data stack, machine learning & AI. If you’re looking to hire top data talent or exploring your next move in data, feel free to reach out to the Cognify team — we’re always happy to help and chat through the market. Our sponsor is [Omni](Omni.co), an AI-powered BI platform that helps people use data to do their best work. Whether users prefer AI, Excel, point-and-click exploration, or SQL, Omni enables fast, trusted answers from a governed semantic model. If you’re eager to dive deeper into industry insights, check out ***The Stacked Data Podcast*** for conversations with industry leaders: Listen on: [Spotify](https://open.spotify.com/show/24fIpekn8WfRDZsVHNcf7Q) [Youtube](https://www.youtube.com/@CognifySearch) or [Apple Podcast](https://podcasts.apple.com/us/podcast/the-stacked-data-podcast/id1700301417) Your feedback is so valuable to us, we'd love to hear from you to help us continue to improve, [Feedback Form here](https://cognifysearch.com/the-london-analytics-engineering-meet-up-feedback-form/) **No-Show Policy**: * If you miss **2 consecutive events** or **2 out of 3 events**, you wont be able to attend the next event. We hope you understand this is to keep things fair for venues and other attendees.

Our Women's only Basketball Scrimmage returns from Wednesday 13th September 2023 Two hours of non-stop scrimmage with good music and great vibes. Just Basketball and fun - no drills! £8 when block booking sessions - message for more details Block booking sessions encouraged 10 sessions -£85 5 sessions - £45 £10 - Pay as you go - [Sportas](https://www.sportas.co.uk/games?gender=FEMALE&sportIds=1) You can book **pay-as-you-go** sessions via Sportas but spaces are limited: [https://www.sportas.co.uk/games?gender=FEMALE&sportIds=1](https://www.sportas.co.uk/games?gender=FEMALE&sportIds=1) Spaces are limited so book early to avoid disappointment. 7:30pm - 9:30pm @ King Solomon Academy Penfold Street · London NW1 6RX **Please note that your space is not confirmed until payment has been made.**

🎉 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.

**Important:** Register on the [event website](https://www.aicamp.ai/event/eventdetails/W2026041610) is required for admission. **RSVP on meetup is turned off** Welcome to the AI meetup in London, in collaboration with Snowflake. Join us for deep dive tech talks on AI, GenAI, LLMs and Agents, hands-on experiences on code labs, workshops, and networking with speakers and fellow developers. **Agenda:** \* 6:00pm\~6:30pm: Checkin and Networking \* 6:30pm\~6:45pm: Welcome/community update \* 6:45pm\~8:30pm: Tech talks and Q&A \* 8:30pm\~9:30pm: Open discussion & Mixer **Speakers/Topics:** Stay tuned as we are updating speakers and schedules. If you have a keen interest in speaking to our community, we invite you to submit topics for consideration: [Submit Topics](https://forms.gle/JkMt91CZRtoJBSFUA) **Venue:** Snowflake, 3 Crown Pl, London EC2A 4EB, United Kingdom. **Sponsors:** We are actively seeking sponsors to support AI developers community. Whether it is by offering venue spaces, providing food, or cash sponsorship. Sponsors will not only speak at the meetups, receive prominent recognition, but also gain exposure to our extensive membership base of 20,000+ AI developers in London and 500K+ worldwide.

Hi UmbLondoners, We're having a post Spark social to catch up on everything Spark and to look ahead to Codegarden. If you've never been to one of these types of meetups before, our 'social' events are relaxed, informal evenings. We meet in a designated pub and talk Umbraco, .NET, community activities and more. People are responsible for paying for their own drinks and food (if wanted). We just promise to provide a friendly welcome! We've chosen The Old Thameside Inn Pickfords Wharf Clink St SE1 9DG Please sign up if you think you'll be joining the fun so that we can ensure that we have booked a space big enough for us! Hope to see you all there!

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We will cover metadata-driven approach to building and operating data pipelines at scale on AWS. Discuss architecture, design trade-offs, and lessons learned from running a unified pipeline across multiple customers using configuration-driven workflows. **Presenter: Dilshad Nasirov** Seasoned Software Architect and cloud practitioner with 20+ years of experience building scalable systems and data platforms. Specializes in AWS, with deep expertise in data lakes, serverless architectures, and real-time data processing. Has led the design and delivery of enterprise-grade solutions across industries, helping organizations improve performance, reduce costs, and unlock data-driven insights. https://www.linkedin.com/in/dilshad-nasirov-4538431/ **CALL FOR SPEAKERS** Learn more: https://www.awscolumbus.com/get-involved/ **THANK YOU** *Leading EDJE* for hosting our meetup! Leading EDJE specializes in helping organizations innovate and solve complex problems. EDJE does this with their "A" player team of professionals using agile methodologies and SCRUM management techniques to give organizations a competitive advantage that sets them apart. Learn more at https://www.leadingedje.com/ **THANK YOU** *Amazon Web Services* for sponsoring pizza! Learn more at https://aws.amazon.com/. **DIRECTIONS** 6515 Longshore Loop, Suite 300 Dublin, OH 43017 (3rd floor) **FREE PARKING** at the Endres Garage across the street, 6540 Riverside Dr, Dublin, OH **Want to sponsor the pizza and/or bar tab for a future meetup?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

💓 **Online Speed Dating Built for First Timers – Real Connections, Zero Pressure!** **🔴 MUST READ: RSVP Alone Won't Get You In!** To attend, you must: (1) Click your age group link below, (2) Complete registration, and (3) Finish the personality quiz. Limited spots available – register now before they're gone! **📋 Choose Your Age Range Below to Register:** - **Ages 18-32** → [REGISTER HERE](https://tempodating.com/product?productId=430.0&productType=onlineSpeedDating&city=Indianapolis&groupurlname=club-leading-local-singles-speed-dating&ar=18-32&face_v=2.0) - **Ages 30-46** → [REGISTER HERE](https://tempodating.com/product?productId=430.0&productType=onlineSpeedDating&city=Indianapolis&groupurlname=club-leading-local-singles-speed-dating&ar=30-46&face_v=2.0) - **Ages 40-58** → [REGISTER HERE](https://tempodating.com/product?productId=430.0&productType=onlineSpeedDating&city=Indianapolis&groupurlname=club-leading-local-singles-speed-dating&ar=40-58&face_v=2.0) - **Ages 55+** → [REGISTER HERE](https://tempodating.com/product?productId=430.0&productType=onlineSpeedDating&city=Indianapolis&groupurlname=club-leading-local-singles-speed-dating&ar=55+&face_v=2.0) --- 🤝 Tired of swiping with no results? Try real conversations instead! Online speed dating removes all the awkward parts of traditional dating. A friendly host guides you through each round, so all you have to do is show up and be yourself. 🎯 **Perfect for:** - Introverts who shine in one-on-one conversations - First-time speed daters seeking a welcoming, easy experience - First-timers who want to date without the pressure of face-to-face meetings - Busy professionals who value their time and comfort **How It Works** 1. **Sign Up** – Click the registration link for your age bracket above. 2. **Finish the Short Personality Assessment** – This helps us optimise your matches for the evening. 3. **Connect on Zoom** – No setup needed. Just click the link and you're in! 4. **Meet Your Matches** – Rotate through fun one-on-one rounds with Indianapolis singles who share your vibe. 5. **Discover Your Matches** – We'll notify you of any mutual interest after the event. The rest is up to you! **Event Details** - **Format:** Hosted live on Zoom – guided, fun, and stress-free - **Location:** No venue needed – just a comfy seat and a good internet connection - **Host:** Your personal guide through the evening – friendly, encouraging, and fun - **Vibe:** Light-hearted, easy-going speed dates with open-minded Indianapolis singles - **Accessibility:** Join from any device – laptop, tablet, or phone - **Duration:** About 60–90 minutes of structured, fun conversations **Frequently Asked Questions** **How long are the conversations?** Each round is a few minutes – long enough to feel a connection, short enough to keep things exciting! **What happens after the event?** We reveal mutual matches after the event. If you both liked each other, we help you connect! --- ✨ The hardest part is clicking register. After that, we make everything easy. See you there! 💘 ✨

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

AI is changing how art is made. But when does it stop being your work and start being the machine’s? This month we're going to be doing a panel with with digital image, music, and written word artists, talking about at what point, while using AI in the creation process, does the work become not the artist creation? We encourage audience participation during this event that will be moderated by Chris Slee. Whether you’re deep in the field or just getting curious, come connect with others building and exploring AI in Columbus. Sponsored by [Transform Labs](https://www.transformlabs.com/services) Sign up also accessible via [Transform Labs Luma](https://luma.com/55umjqta)

**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

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9