Microsoft Office

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 .

PLEASE NOTE YOU MUST book and pay for your ticket in advance at https://www.privateequitynetwork.co.uk/ The London Family Office & Private Equity Business Networking Committee would like to extend you an invitation to our April 2026 Mayfair Networking Reception to be held in the private lounge of the the famous Davys at St.James - and hope you can join us for after-work drinks, canapés and productive networking to make new contacts and ideas for 2026. We now have over 8000 diverse and relevant London members so it’s the perfect opportunity for making new third sector connections. PLEASE NOTE YOU MUST book and pay for your ticket in advance at https://www.privateequitynetwork.co.uk/ ALSO PLEASE NOTE we take most of our event bookings through our website and EventBrite so the numbers booked is much larger than displayed on this Meetup page (normally about 40-60 guests).

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.

**Morality of Beauty** What if we saw beauty not as decoration, but as a way of encountering reality? Today, it’s often reduced to a commodity—raising a deeper question: what does our relationship to beauty reveal about us? We live in an image-saturated world, yet often remain untouched by the beauty around us. Perhaps we resist being changed, or haven’t learned to look beyond first impressions. Yet beauty is not entirely innocent—it can reveal truth, but also mislead. Must we, then, learn to approach it with care? This discussion explores both its power and its risk **Event details ** We have reserved the Chicester Room in ther pub for us . Please ask for Philosophy cafe at the door and they will direct you . We like to break into small groups and have a healthy discussion about life , philosophy and ideas . We break out into groups of 6 to discuss three questions over 45min to 1 hour; and then spend another 45min feeding back into the main group. The three topics are chosen on the day by vote, and largely derived from suggestions on the day. We welcome new ideas , so please come up with suggestions or topics that you want to talk about . There is no specific topic list and you do not need to read or know anything particular about philosophy . The official time is 7-9: 30 pm , but we usually go into a pub mode after 9:30 pm and continue our discusssions.

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!

Lenses of Croydon is pleased to announce the return of the Croydon Photography Forum, our monthly space for photographers, creatives, visual storytellers, and those completely new to photography to connect, learn and share their work. We are proud to continue delivering the Forum within the Broad Green ward. It will now be hosted at the Smile Hub on London Road, West Croydon, in partnership with the Friends of the Smile Hub, as we continue our commitment to creating accessible and welcoming spaces for the local creative community. For this relaunch session, we are delighted to welcome George Dyer as our guest speaker. George is a long-standing member of Lenses of Croydon who developed his early interest in photography through community practice before going on to complete both a BA and MA in Photography. He is now an emerging visual artist whose work explores identity, memory and representation through collage and mixed media. His practice draws on archival imagery and reworks it into layered compositions that question how stories are told and who gets to tell them, with a particular focus on the lived experiences of Black and brown men. George has exhibited his work across a range of spaces in the UK and internationally, including Central Saint Martins, the Affordable Art Fair in Hampstead Heath, the Brady Arts & Community Centre, and the Royal Ulster Academy Annual Exhibition. In this session, George will share his journey into photography, the influences behind his work, and his experiences of studying and developing a professional practice. He will also offer insight into his creative process and the realities of working within the visual arts. The session will include time for discussion and questions, providing an opportunity to engage directly and reflect on your own creative development. Whether you are new to photography or looking to further develop your practice, the Croydon Photography Forum offers a supportive space to learn, connect and grow. Please note we meet at 6:45pm for a 7pm start and there will be a fundaraising raffle on the night to keep the forum going and ensuring that it is accessible to all.

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?*

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!

We’re thrilled to announce the official dates for **Global Azure 2026** — the world’s largest community-driven celebration of Microsoft Azure! Register here https://luma.com/iofs3qcx

You want to do your best! You want to realise your potential! You want to make the right decisions at the right time! Obviously- you want to be a success! Do you have all the skills in place? Do you have areas in your life or personality that are weaker and you feel can stop you or hold you back? Would you like a free personal consultation to help locate your strengths and weaker areas? We can help you to maximise on your potential. If you would like a free 1 hour consult then register now! We have various times available for your own personal consultation This is hosted at the Scientology Life Improvement Centre in London. We use the Oxford Capacity Analysis test. https://www.scientology-london.org.uk/personality-test/

PLEASE NOTE YOU MUST book and pay for your ticket in advance at https://www.londonfamilyoffice.co.uk/ The London Family Office & Private Equity committee would like to extend you an invitation to our April 2026 Networking Breakfast to be held in the private lounge of the famous Polo Bar In The City of London - and hope you can join us for a delcious pre-work breakfast and productive networking to make new contacts and ideas for 2026+. We now have over 8000 diverse and relevant London members so it’s the perfect opportunity for making new third sector connections. See photos from our latest events at https://www.instagram.com/london.family.office/ PLEASE NOTE YOU MUST book and pay for your ticket in advance at https://www.londonfamilyoffice.co.uk/ ALSO PLEASE NOTE we take most of our event bookings through our website and EventBrite so the numbers booked is much larger than displayed on this Meetup page (normally about 30-50 guests for our breakfast events).

**BOOK HERE**: https://sportas.co.uk/games/47845 **Game Description:** This is a new series to align with our belief, that to be a good volleyball player you must be a good all around Volleyball Player. The focus of these sessions are: \- Ball control \- all phases of the game \- Decision Making \- Team work \- Problem Solving Structure 1-hr Technical Training 1-hr Game Like Drills Coach - Kai Dugquem Kai brings a wealth of knowledge having coached NCAA Division 1 at Long Island University in New York. He currently assists at Malory Eagles in the Super League and plays with Westminster College. He will be a tremendous asset to Roots and in your Development. **Rules** These sessions are not for beginners, meaning you should understand 5-1 rotations and have a grasp on the fundamentals of the game. Check our guide here for more information: https://docs.google.com/document/d/1Ap4Ok9A7PbJznoaPa56q9MvyliYGuRlXZuuEX2G3mJg/edit?usp=drivesdk

**BOOK HERE**: https://sportas.co.uk/games/47215 **Game Description:** This is a casual but competitive mixed ability and ages game with a good group of guys 🙌 Playing on pitch 4 **Rules** \* No slide tackles. \* Shoot from outside the penalty area - attackers not allowed in the box. \* Keeper cannot come out of the penalty area or it’s a pen. \* Defenders not allowed in the area or it’s a pen. \* Rules are sometime flexed if number low or we have odd numbers.

🎉 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.

The global Azure community is coming together again, and Columbus is officially on the map. View the session lineup and speakers at [Global Azure Columbus 2026](https://coazure.github.io/cbus-global-azure-2026/) On **Saturday, April 18, 2026**, the Azure Columbus Meetup, DevOps Meetup, and Code and Coffee Meetup are hosting our local edition of Global Azure 2026. This is a free, community-driven event packed with learning, networking, and all things Microsoft Azure. Whether you’re building modern cloud-native apps, experimenting with AI agents, deploying containers, automating infrastructure, or just beginning your Azure journey, this event is for you! **What to Expect** * Engaging technical sessions * Real-world Azure architecture & cloud-native patterns * AI, agents, automation, and modern DevOps * Food and drinks (because learning burns calories) * Time to connect with fellow engineers, architects, and cloud enthusiasts **Who Should Attend?** * Software engineers (any language, any stack) * Cloud architects * DevOps engineers * Data professionals * AI explorers * Platform builders * Anyone who loves solving hard problems with great tools If you build, deploy, automate, scale, monitor, or optimize in Azure, you’ll feel right at home. **Why Global Azure?** Global Azure is a worldwide community event where Azure user groups host learning sessions on the same day across the globe. It’s grassroots. It’s technical. It’s practical. And it’s powered by people who genuinely love sharing what they’ve learned. And yes, it’s free to attend!

**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

Join Neurospicy Columbus at the Stauff's for coffee and then a stroll through the Book Loft nearby! This will be a friendly chat for like minded individuals with Autism and/or ADHD (or somewhere on the Neurodiverse Spectra).

We're working on some great speakers for the April meeting. Agenda TBA: 11 Welcome 11:15 Michael Franchino - Using MCP in BC: Turning AI from Novelty into Tooling Noon - Networking Lunch 12:30 Dan Gianguilio - From complex to configured: making advanced warehousing work for you 1:25 Mark Zerr - Ohh, Cool Button's 2:00 Closing Remarks You're invited to Indiana D365 April User Group Meeting Wed Apr 22, 2026 11:00 AM—1:30 PM (EST) [https://teams.microsoft.com/l/meetup-join/19%3ameeting_NDQ3M2ExZWMtNzg5YS00N2M3LTkyNTItZmY0M2Q2NWFmYzBl%40thread.v2/0?context=%7b%22Tid%22%3a%22b4c9f32e-da17-4ded-9c95-ce9da38f25d9%22%2c%22Oid%22%3a%2267db4a27-1865-4ea7-bb20-a28137a8aa56%22%7d](https://teams.microsoft.com/l/meetup-join/19%3ameeting_NDQ3M2ExZWMtNzg5YS00N2M3LTkyNTItZmY0M2Q2NWFmYzBl%40thread.v2/0?context=%7b%22Tid%22%3a%22b4c9f32e-da17-4ded-9c95-ce9da38f25d9%22%2c%22Oid%22%3a%2267db4a27-1865-4ea7-bb20-a28137a8aa56%22%7d) Tap on the link or paste it in a browser to join.

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)

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

Colombus Code & Coffee is thrilled to partner with Central Ohio Azure to put on the global Azure community day! RSVP here: https://www.meetup.com/central-ohio-azure/events/313484939/ View the session lineup and speakers at [Global Azure Columbus 2026](https://coazure.github.io/cbus-global-azure-2026/) On **Saturday, April 18, 2026**, the Azure Columbus Meetup, DevOps Meetup, and Code and Coffee Meetup are hosting our local edition of Global Azure 2026. This is a free, community-driven event packed with learning, networking, and all things Microsoft Azure. Whether you’re building modern cloud-native apps, experimenting with AI agents, deploying containers, automating infrastructure, or just beginning your Azure journey, this event is for you! **What to Expect** * Engaging technical sessions * Real-world Azure architecture & cloud-native patterns * AI, agents, automation, and modern DevOps * Food and drinks (because learning burns calories) * Time to connect with fellow engineers, architects, and cloud enthusiasts **Who Should Attend?** * Software engineers (any language, any stack) * Cloud architects * DevOps engineers * Data professionals * AI explorers * Platform builders * Anyone who loves solving hard problems with great tools If you build, deploy, automate, scale, monitor, or optimize in Azure, you’ll feel right at home. **Why Global Azure?** Global Azure is a worldwide community event where Azure user groups host learning sessions on the same day across the globe. It’s grassroots. It’s technical. It’s practical. And it’s powered by people who genuinely love sharing what they’ve learned. And yes, it’s free to attend!