ReactJS

👋 General Info Hi friends, We’re excited to kick off our next React meetup on **February 18**! Join us for an evening of practical insights, great conversations, and community vibes — from real-world React talks to networking with fellow engineers. **🗣 Call for Proposals** Have an idea or story to share? Submit your talk proposal through our[ ](https://forms.gle/8gZfT3Qkfd71CxyK6)[CFP form](https://forms.gle/rCiQ8Y4jajiC8AHMA) and take the stage at one of our upcoming meetups! **🤝 Organized by** This event made possible thanks to the support from[ React Summit](https://reactsummit.com/) and[ JSNation](https://jsnation.com/) organizers –[ GitNation](https://portal.gitnation.org/). **🤝 Hosted by** Huge friends to our friends [Figma](https://www.figma.com/) Figma is a browser-based design and prototyping tool enabling real-collaboration. Built for developers, Figma's Dev Mode gives you the power to easily inspect designs and translate them into code—without changing the design file. Headquartered in San Francisco, in 2020 Figma opened its EMEA HQ in London. We’re a team of makers who celebrate our differences and share a passion for our community. Our London based engineering team is growing quickly and working on some of Figma's top company priorities. 🤝 **Want to support our community?** We’re looking for venue partners and sponsors for future meetups. Let’s discuss collaboration — [contact us](https://forms.gle/zWYxsanfbhV64dEr5)! **🕑 Event Schedule** * 18:00 - Doors open - snacks, beer, socialization * 18:50 - Opening notes * 19:00 - **The Lost Art of Debugging: Why Your Browser is Smarter than AI - [Abdullah Ola Mudathir](https://www.linkedin.com/in/cruxcodes/)** * 19:25 - **Why Your Marketing Scripts and Cookie Banners Are Ruining Your Lighthouse Scores - [Christopher Burns](https://www.linkedin.com/in/burnedchris/)** * **19:50 - Networking, Open Mic Lightning Talks** * Mingle until 21:00 pm 🗣️ **Talks** ➡️ **The Lost Art of Debugging: Why Your Browser is Smarter than AI - [Abdullah Ola Mudathir](https://www.linkedin.com/in/cruxcodes/)** *The easiest thing to do is often what causes hours of debugging down the line. With LLMs becoming increasingly normalized in the industry, an overreliance on them can allow bugs to slip through the cracks.* *In this talk, I'll demonstrate a practical debugging workflow: Debug first. Prompt second. I'll show how browser DevTools reveal what's actually happening faster than any AI can guess.* *You'll learn:* * *Essential DevTools features that improve your bug-fixing prowess* * *When to reach for your browser and when AI can actually help* * *The almost forgotten art of breakpoints and strategic console messages* *AI in your codebase represents growth, but understanding your runtime state represents mastery. This talk is about balancing both and knowing which tool to reach for first.* ➡️ **Why Your Marketing Scripts and Cookie Banners Are Ruining Your Lighthouse Scores - [Christopher Burns](https://www.linkedin.com/in/burnedchris/)** *Most marketing scripts and cookie banners run on the critical path. They block the main thread, delay first paint, and inject third-party code before the page is interactive.* *Consent managers often make this worse by synchronously loading vendors, mutating the DOM repeatedly, and re-hydrating UI after page load. The result is slower LCP, higher TBT, and unstable CLS.* *The fix is not fewer scripts, it is better orchestration. Treat consent as infrastructure, load vendors after intent, and keep compliance off the critical path.* — **👍 Code of Conduct** By registering for this event you agree to comply with our [CoC](https://gitnation.com/coc) **📩 Contact** events@gitnation.org https://twitter.com/ReactAdvanced http://youtube.com/ReactConferences https://bsky.app/profile/reactadvanced.gitnation.org

Elixir London Meetup; February 2026 edition. All are welcome. **Session 1: Bryan Hunt - Faria Data Platform: Building a data platform in Elixir** How to build an ETL pipeline using Amazon Athena, and Elixir: techniques, tools, UX, lessons learned. **Session 2: Christoph Beck** **\- Structured Generation and Logits Processing with Elixir** Ever tried to get a poem from an LLM doesn't contain the letter \`e\`? Large Language Models are kind of amazing and surprisingly unreliable at the same time. Using Elixir's Bumblebee and open source LLMs, you can get much better control over the generation. We introduce you to logits processing, and how it can be used to achieve what ChatGPT can not accomplish. *The event is kindly sponsored by* [Verna](https://verna.earth). **Time** Doors open at 18, start at 18.30. **Venue** Geovation F4, Sutton Yard, 65 Goswell Rd., London EC1V 7EN **Refreshments** Food and drinks will be provisioned on the day. **IMPORTANT**: **If you wish to take photos and post online during the event, please notify organisers first, so that attendees can opt-out from being in photos.**

Our acclaimed Wednesday workshop returns - we'll be looking at Lorca's classic drama exploring fate, passion, and societal expectations. A bride elopes with her former lover on her wedding day, triggering deadly consequences. Rich in poetic symbolism and folk traditions, the play confronts love’s destructive force and the inevitability of death and honor. We will be working towards A FULL PRODUCTION in April 2026.. If you'd like to get involved email: actinggymnasium [at] [gmail.com](http://gmail.com/)

We are delighted to announce an evening of demos and a roundtable discussion on what you want to see from the meetups. There is also still time to feedback with the link below [Umbraco London Meetup Questionnaire](https://docs.google.com/forms/d/e/1FAIpQLSfISk1q_ZEoN82_vhiBeWwuVG3fUUB4uqkK-PqWtArajUErJw/viewform) We are welcome from 18:30, we shall look to get started around 18:45. We'll finish by 21:00 when we take the conversations to a local pub. \-\-\-\-\- **Experiments in V17** *by Matt Bliss - Technical Director* Matt will guide us through some of his experimentation in V17 and his learnings. **AI: Am I Too old for this \*\*\*\* (stuff)** *by Andy Hawken* Andy asks the big questions and he's going to talk about his experiences with Claude AI in January and a bit of February too. **Meetup feedback rountable** *by Richard Thompson and the meetup team* Richard will run us through the results of the feedback survey on the meetup and we'll have a discussion on what people want to see from the meetups. \-\-\-\-\-\- This is Embrace will be kindly providing some refreshments. Space is a bit limited so if you realise you can't make it please be sure to change your RSVP to No in case there are people on the waiting list. \-\-\-\-\- If you would like to contribute to our meetups please in touch by email ([hello@umblondon.co.uk](hello@umblondon.co.uk)) - we are always looking for people to give talks, or London-based Umbraco agencies to host us for the evening. Please read the [Code of Conduct](https://bit.ly/UmbLondonCodeOfConduct) for all our events.

**Breaking Chains: *An Evening of Hope, Prayer & Encouragement*** Life can sometimes feel heavy, overwhelming, or isolating. This first gathering is a relaxed and welcoming space for anyone seeking connection through faith-based fellowship. Whether you are facing personal challenges, exploring faith, or simply looking for a supportive community, you are warmly invited. There is no pressure to speak, pray or participate beyond what you feel comfortable with. **What to Expect** * Warm welcome & introductions * A friendly start with light introductions so everyone feels at ease. Short reflection on hope and freedom * A brief, encouraging message centred on finding strength, peace, and renewed perspective. * Optional prayer time * A gentle time of prayer offered for those who wish to take part. You are equally welcome to sit quietly and observe. * Open space for sharing (optional) * An opportunity to share reflections or prayer requests if you choose—listening is always welcome. * Closing encouragement * Ending with words of hope and practical encouragement for the week ahead. **Who This Event Is For** * Anyone navigating difficult seasons of life * Those seeking faith-based encouragement and prayer * People curious about Christian fellowship in a relaxed setting * Anyone who values kindness, respect, and community **Good to Know** * This is a safe and respectful space * No obligation to speak, pray, or share * All welcome to share in love of the Christian Faith The atmosphere is calm, supportive, and non-judgemental Breaking Chains exists to support people in finding hope, strength, and freedom from life’s challenges through faith and fellowship. We would be honoured to welcome you ....

​Join **Orchestra**, **Tracer** and **Lightdash** for an in-person evening with London’s data engineering community. ​This event is built for **data engineers, analytics engineers, and platform teams** who enjoy going deep on real technical topics — from modern data stack architecture to reliability, observability, orchestration, and the practical lessons learned from running pipelines in production. ​Expect a relaxed atmosphere, good people, and plenty of time for conversation (with free 🍕 & 🍻). IMPORTANT: MEETUP IS TRYING TO BLEED US ALL DRY SO PLEASE [SIGNUP ON LUMA](https://luma.com/ml500u2m) AND SUBSCRIBE TO THE CALENDAR THERE. IF YOU DONT SIGN UP WE CANT GUARANTEE YOUR SPOT! [https://luma.com/ml500u2m](https://luma.com/ml500u2m) ​**Agenda** ​**6:00 – 6:30pm:** Arrivals, drinks, networking **6:30 – 7:30pm:** Technical talks + Q&A **7:30pm onwards:** Networking **Technical Speakers** * ​Data @ The Economist - **[Luca de Michele](https://www.linkedin.com/in/luca-de-michele-232432148)** * Data @ Lawhive - **[Pablo Fernandez](https://www.linkedin.com/in/pablofergui/) (Head of Data)** * ​**TBA** ​**Who should attend** * ​Data Engineers & Analytics Engineers * ​Platform Infrastructure Data Ops teams * ​Anyone building, scaling, or maintaining production data pipelines

We're hosting our first meetup of 2026 in collaboration with our friends from **DevSecOps London Gathering**. We'll be generously hosted at the AutogenAI offices near King's Cross, and we'll feature two talks that should be of interest to both audiences. **6:00pm - Arrival** **6:45pm - Introductions** **7:00pm - The Talks** **Concrete Evidence: Two Races, One RCE** - [Adrian Tiron](https://www.linkedin.com/in/tironadrian/) Concrete CMS, a popular open-source content management system, contains a critical flaw in its file upload functionality that can be exploited in two distinct ways. This talk demonstrates how a single upload can lead to a Server-Side Request Forgery (SSRF), allowing access to internal cloud resources, and a double race condition that enables Remote Code Execution (RCE) via a malicious backdoor. We’ll walk through the exploitation process, show how existing protections can be bypassed, and highlight practical steps to secure file upload mechanisms in real-world applications. Adrian is the Co-Founder and Principal Pentester/Red Teamer at Fortbridge, bringing over 20 years of hands-on experience in cybersecurity. Adrian is known for delivering highly technical, practical content drawn from real-world assessments, and is passionate about pushing the boundaries of modern application security. **Keeping login from taking down your product with an SRE approach to auth –** [Viola Lykova](https://www.linkedin.com/in/violaly/) Treat authentication as a production-critical system with its own failure modes and operational risks. In this talk, I break down real-world auth incidents involving JWKS rotation errors, refresh token storms, clock drift, and session store outages. I show how to define SLIs and SLOs that measure user impact and how to build monitoring and alerting that expose real reliability problems. I demonstrate practical guardrails such as token caching, exponential backoff with jitter, circuit breakers, and feature-flagged degraded modes. Finally, I walk through an incident runbook that helps teams diagnose, mitigate, and recover from authentication failures safely and quickly. Viola is a Senior Software Engineer in fintech with an SRE mindset, focused on authentication as a production system. I care about reliability, incident patterns, and the kind of testing that still holds up when traffic spikes, dependencies misbehave, or keys rotate at the worst possible time. Viola speaks on practical auth topics across security and reliability. **Participate in a future Meetup** If you'd like to speak at a future meetup, or if you are able to host or sponsor the event, please fill in this [form](https://docs.google.com/forms/d/1FYGHEWTeBb5vVztGGg2YoUJmKR03o9mZaFIghf6vjzo/viewform?edit_requested=true) and we'll get back to you.

Following the 5 STAR REVIEWED sell out success of MACBETH and TWELFTH NIGHT - the Acting Gymnasium's acclaimed Saturday workshop returns with a new production of OTHELLO which will play at Network Theatre Waterloo in February 2026. Email: actinggymnasium@gmail.com - if you'd like to get involved.

We are an informal and friendly group who meet in one of the studios at the Cockpit Theatre to develop our skills and confidence in a relaxed environment. We will go through a few exercises and try out some: improvisation, script work, duologues or monologues, with participants optionally bringing their own material or pieces to work on together. The exercises and things we work on differ from week to week. Beginners are welcome. The workshop is led by Mark Ramsay, a trained actor with almost 30 years of film and stage experience with assistance from a guest facilitator. Venue: The Cockpit Theatre, Marylebone, Gateforth St, London NW8 8EH, Studio 3(Upstairs) **Time: 17:00 to 20:00** Cost: £7 for the room hire, payable at the venue in cash **If no longer attending please update RSVP**

IMPORTANT - PLEASE READ! Welcome to the Highest Rated International Language Exchange group in London,🏆 with 1400+ reviews rated 5 stars ⭐⭐⭐⭐⭐ Join us on **Friday** for our weekend global language exchange and social 😊🍻🥂 TO ATTEND THIS EVENT YOU **MUST**👇👇 1. Have your Meetup confirmation visible on your phone when you arrive. 2. Collect & wear your badge as soon as you arrive and always BEFORE buying your drinks and food. 3. Pay the £2 event fee. The event starts at 7pm. **The event fee is £6 if you arrive after 8:30pm** Start meeting the community and having fun...lots of fun! www.languages.london 🇬🇧🇪🇸🇫🇷🇯🇵🇮🇹🇩🇪🇮🇳🇨🇳🇧🇷🇰🇷🇪🇬🇭🇰🇺🇸🇨🇴🇺🇦🇹🇷🇷🇺🇦🇺 WHEN & WHERE This Friday we'll be returning to The Craft Beer Co, St Mary Axe.** **Address: 29-31 Mitre Street, London, EC3A 5BU** https://maps.app.goo.gl/49HnHGap8hQMbQNWA **HOW WE DO IT** It's simple .... \~ When you arrive please collect your personalised language badge from us. We'll be waiting to give you a warm welcome 😃 \~ Please wear your badge during the event and always return it before you leave ♻️ \~ Start meeting the community and having fun...lots of fun! Please buy something from the bar to support the venue, who kindly offer us a dedicated space. 🇵🇱🇹🇼🇲🇽🇻🇳🇧🇬🇵🇸🇸🇪🇮🇱🇨🇦🇳🇱🇿🇦🇭🇺🇹🇭🇵🇪🇧🇴🇳🇬🇳🇿🇨🇭 **WHO** Languages in London events are organised for our community - being social, making new friends, building cultural bridges and always very relaxed. We have the largest number of languages and countries represented in our weekly language exchange and social events in London. This is **not** a dating event. Our events are open to Internationals, Locals, Expats, Students, Travellers..... Everyone! Are you an 18 to 24 year old? Come and explore our events. This is the event for a truly global community and for citizens from around the World. Is this the Intercambio you've been looking for? Want to practice your ingles, espanol , francais, italiano, Deutsch, portugues or other European languages? Asian languages ? Or maybe prefer to only speak English.... that's just fine. **All languages and all fluency levels are welcome** Spread the love...Bring your friends 💙 The creator and organiser of **Languages in London - Girish**, will always be visible at the event and there to support you and help with introductions, if you prefer. We want to remain the BEST language events group in London, being the biggest isn't our focus. These are real events with real people. We don't fill our events with inflated numbers and fictitious attendees 👻 **Community members that no-show at our events and inactive members are regularly removed from our group.** **LANGUAGES** Here's a selection of some of the languages that our community speak or have been practicing ... English, Spanish (incl Latin American), French, Italian, Portuguese (incl Brazilian), German, Japanese, Chinese (Mandarin & Cantonese), Russian, Korean, Hindi, Turkish, Arabic, Ukrainian, Polish, Hebrew, Swedish, Bulgarian, Vietnamese, Hungarian, Bengali, Dutch, Catalan, Farsi, Greek, Urdu, Welsh, Romanian, Norwegian, Czech, Slovakian, Estonian, Danish, Finnish, Turkmen, Latvian, Lithuanian, Nepali, Yoruba, Filipino, Thai, Albanian, Croatian, Serbian, Ebo, Afrikaans, Tamazight, Tagalog, Creole, Malagasy, Mongolian, Tok Pisin and more... you get the idea! 🇷🇴🇬🇹🇨🇿🇳🇴🇩🇰🇫🇮🇨🇾🇺🇾🇪🇬🇧🇬🇦🇷🇰🇪🇱🇰🇲🇦🇹🇳🇩🇿🇸🇬🇲🇾 **SUSTAINABLE** 🌎🌳 Like you, we really care about our planet. We don't like single use paper name tags, stickers or wristbands as they can't be reused or recycled and can even damage your clothing 👎 The Solution? ...Our personalised and completely reusable Languages in London badges! 👍 So, please make sure you return your badge to us, before you leave the event. We'll sanitise it (anti bacterial & disinfectant cleaners) and use it again & again & again. Thanks for helping us do the right thing and keep our costs down🙏 **SAFE SPACE FOR EVERYONE** 👮‍♂️ We don't tolerate prejudice or harassment of any kind, at any time. Be polite and respectful to everyone else and they will reciprocate. Let's keep the space safe, welcoming for everyone and free of any political agendas. Please report any concerns to the Organiser immediately. Please look after your belongings, the venue is a public place. We may take photos or video at the event for future promotional use. Let us know if you'd rather not be included, we respect your choice 📸 **SPREAD THE WORD** 🗣️💬 If you enjoy our events, please tell your friends and colleagues and help us grow **your** community, thank you ♥️ Join our community - https://www.languages.london/ We're looking forward to welcoming you at Languages in London 😊👋 🇲🇰🇳🇵🇧🇩🇵🇭🇦🇪🇦🇱🇧🇪🇮🇪🇰🇿🇱🇦🇯🇴🇱🇹🇱🇻🇪🇪🇰🇭🇨🇱🇲🇳🇨🇺

# 🍂❄️ LEAF Gathering🍻 Hello LEAF**🍂** (London East Asians & Friends) family! It's time for our monthly gathering, and this time we're cozying up in a warm pub for a lovely winter get-together. Join us for an evening of good company, laughter, and the chance to connect with fellow East Asians in London! **🌈 Who's Welcome** This event is open to all LEAF members and friends. Remember, LEAF is primarily for those with strong ties to East Asia: * People with East Asian heritage or roots * Those born or raised in East Asian countries * Individuals who have lived extensively in East Asia * Friends and family members of the above We welcome everyone with East Asian connections, regardless of gender, age, or sexuality. **👋 New to LEAF?** If this is your first event with us, don't worry! We're a friendly bunch and always happy to welcome new members. Look for the group with East Asian faces on our reserved floor! Feel free to approach anyone and introduce yourself – we don't bite! 😊 Please say hello to any of the organisers and we will be happy to introduce you to other people. Welcome to join anytime, don't worry about being late;-) We can't wait to see you all there! Let's create some wonderful winter memories together! 🍵🥟🎉

**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** *Spec-Driven Development with GitHub Spec-Kit: From Intent to Implementation* Spec-driven development flips the traditional workflow on its head: instead of code being the source of truth, the specification becomes the backbone of design, collaboration, and delivery. In this session, we’ll explore how GitHub Spec-Kit enables teams to treat specifications as first-class artifacts—living documents that drive architecture, implementation, and verification. You’ll learn how Spec-Kit helps teams clearly express intent using structured, version-controlled specs that live alongside code. We’ll walk through a practical workflow that starts with defining system behavior and constraints, then progressively refines those specs into testable, automatable outcomes. Along the way, we’ll show how specs can reduce ambiguity, improve cross-functional collaboration, and make design decisions explicit before a single line of production code is written. This talk will cover: --What spec-driven development is (and what it isn’t) --How GitHub Spec-Kit fits into modern developer workflows --Using specs to align product, engineering, and AI-assisted development --Real-world examples of turning specs into implementations with confidence Whether you’re building greenfield systems, integrating AI into your stack, or trying to reduce costly rework, spec-driven development offers a scalable way to move faster without sacrificing clarity. Attendees will leave with concrete patterns and a clear mental model for adopting GitHub Spec-Kit in their own projects. **YouTube Link** TBA

Can two girls—one enchanted, one the enchantress—save their kingdom and each other? Two hundred years ago, a slighted deity stole the magic from Auréal and vanished without a trace. But seventeen-year-old Odile has a plan. All her life, her father, a vengeful sorcerer, has raised her for one singular task: infiltrate the royal palace and steal the king’s crown, an artefact with enough power to restore magic. But to enter the palace, she must assume the identity of a noblewoman. She chooses Marie d’Odette: famed for her beauty, a rumored candidate for future queen…and Odile’s childhood-friend-turned-sworn-enemy. With her father’s help, Odile transforms Marie into a swan and takes her place at court. But when the king is brutally murdered and her own brother is accused, her plans are thrown into chaos. Desperate to free her brother, Odile is forced to team up with none other than elegant, infuriating Marie, the girl she has cursed…and the girl she can’t seem to stop thinking about despite her best efforts. To make matters worse, there are whispers that the king’s murder was not at the hands of man, but beast. Torn between loyalty to her father and her growing feelings for Marie, Odile becomes tangled in a web of treachery and deceit. To save her kingdom, she must find the true path to magic…and find the real killer before they—or it—strikes again.

Meeting @ Improving's office in Downtown Columbus, near Cosi. Parking is paid, food & drink are free! This time we're hanging out after the long winter break. We are going to look at a group-member's project used to help learn the fundamentals of Go, and if time allows, we can take a look at how we like to build Go projects using AI.

Calling all founders, CEOs, lawyers, doctors, and entrepreneurs to join our special *Founder Edition* of Sip & Read meetup event. Let's sip on fine wine and discuss our first book **The 5AM Club- Own Your Morning Elevate Your Life, by Robin Sharma**. We will pair this book with our favorite wine at **Wine on High** and engage in thought-provoking discussions on startup businesses and entrepreneurship, and network with like-minded individuals in a cozy book club setting. Come prepared to discuss this month's book. At the end of each book club meeting, we will take next book and venue suggestions from the participants for the next meeting. Whether you are a book lover, women entrepreneur, or a content creator, this event is perfect for sharing ideas and insights with other funders and founders in the entrepreneurial world. Don't miss out on this unique opportunity to connect, learn, and grow together. Sign up now to reserve your spot! *Fun fact! This meetup was established in 2015 and had over 1,000 members. I had to shut down operations while attending law school, but we're back!!*

**NEW LOCATION: 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). See the handy Parking Map - we recommend street parking. [Street Parking Map](https://docs.google.com/presentation/d/1u2A4fLNlxwLJn0KA_hKc8bnFlFHLvsHBDh-_8wzX_tk/edit?usp=sharing) 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 centralohpython@gmail.com

We’re still working to get more people into these Meetups, but our goal is to give PlayYourCourt members a few social tennis outings each week in addition to your practice sessions and Challenge League matches. These Meetups are co-ed, super laid back, and all skill levels are welcome. Post your skill level and a suggested court in the comments section so we can round up as many players as we can for some tennis fun! Also, if you’re looking to meet new practice partners or play some matches and you aren’t already in the PlayYourCourt Community, you can go here to see what we’re all about and sign up: https://www.playyourcourt.com/tennis-community/columbus-oh/meetup/ If you love tennis, we’d love to have you! Be sure and watch the quick video that explains how everything works. Happy hitting! - Scott

**New Dojo Location!** **Draft Day Columbus** 1130 Dublin Road Columbus, OH 43215 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 topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)