Concurrent Programming

**The Prague FrontEnd Meetup is back in 2026!** Join us on **the last** **Wednesday in February, 25th, at 5:00 PM** in the **Ataccama offices in Karlín** for another evening full of inspiration, great talks, and friendly networking. ✨ The lineup: Tomas Belada will be talking about OpenCode - a great open source AI agent. But the real power shows up once you sprinkle a bit of Greek mythology on top. In this talk, I’ll demo a plugin that turns OpenCode into a superpower, an end-to-end coding workflow. Pavel Kepka is experimenting with how the technology stack affects the LLMs - Pavel designed an experiment to evaluate the LLM's architecture decision based on the required technology stack. He'll share his findings and learnings with us at the upcoming Ataccama Meetup. Michal Kopecky will be talking about his MCP-FE library. Michal's annotation says this: Most AI agents are "blind" to your application's internal logic, often relying on messy DOM scraping or raw HTML snapshots. In this talk, I will demonstrate how to bridge React and LLMs natively using the Model Context Protocol. We’ll explore how to give agents direct access to clean component state—such as data grids, active filters, and selections—and enable them to execute actions within the browser. Join me to see how we can transform a simple chatbot into a truly context-aware co-pilot. As always, expect: Snacks & drinks Friendly community vibes Space to learn, share, and connect **RSVP here to save your spot**

**Ackee meets: Vol. 4 je tady! ** 2026 jsme vyhlásili jako rok Ackee Multiverse. ✨ Ten otevíráme tím největším crossoverem – **Mobile Development. ⚔️ iOS & Android na jednom místě.** Jak dnes v Ackee přemýšlíme o **multiplatformním vývoji**? Svět nejen mobilního vývoje se mění rychleji než kdy dřív a hranice mezi (kdysi rivalskými) tábory se stírají. Přijďte na další Ackee Meets, kde pokecáme o tom, jaké to je, **bořit zdi mezi iOS a Androidem**, jestli **Swift brzy ovládne konkurenční platformu** a jak bezpečně **integrovat KMP do obří bankovní aplikace**. Žádná teorie z učebnic, jen **čistá praxe, fuckupy a zkušenosti** z první linie Ackee projektů. **Kapacita je omezená – registrujte se zdarma přes [Eventbrite](https://www.eventbrite.com/e/ackee-meets-mobile-development-ios-android-tickets-1981931329960).** Interakce tady na meetupu nestačí. **CO NÁS ČEKÁ:** ** Jak jsme v Ackee zbořili zdi mezi iOS a Androidem (z pohledu iOSáka)** *[Rostislav Babáček](https://www.linkedin.com/in/rostislavbabacek/)*, Mobile Developer Jak vypadá přerod kovaného iOSáka v univerzálního mobile developera, který dodává KMP features? ? Podíváme se na dopad každodenní workflow – od boje s cizím IDE, přes rozdíly mezi Swiftem a Kotlinem i mezi Androidem a iOSem, až po dilema, co vše do KMP (ne)patří. Dozvíte se, co nám pomohlo se s tím srovnat a jakou roli v tom hraje správně nakonfigurovaná AI. ** Swift pro Android. Je to konec pro KMP?** **** *[Vít Nademlejnský](https://www.linkedin.com/in/nademlejnskyvit/),* Mobile Developer Apple rozvířil vody založením Android Workgroup a představením Swift SDK pro Android. Znamená to konec nadvlády KMP, nebo jen slepou uličku? Podíváme se na aktuální stav tohoto projektu, jeho limity a reálný význam pro dnešní i budoucí multiplatformní vývoj. ** Jak (ne)rozbít bankovní aplikaci při integraci KMP** **** *[Petr Polívka](https://www.linkedin.com/in/petr-pol%C3%ADvka-5042311b6/) & [Alexander Grigorov](https://www.linkedin.com/in/alexander-grigorov-808751214/), Mobile Developers* Kotlin Multiplatform slibuje sdílení kódu a jednodušší vývoj – pustit ho ale po 2 letech vývoje do rozjeté bankovní aplikace chce odvahu (nebo dobrý plán). Na jaké problémy jsme narazili a co všechno bylo potřeba vyřešit, aby aplikace zůstala stabilní i při takhle masivní změně pod kapotou? Praktické zkušenosti, tipy i slepé uličky z integrace KMP do aplikace se 170 obrazovkami. * ️ **Kdy**: 25. 2. 2026 od 17:00 * **Kde**: Ackee, Block Karlín, 6. patro * ** Za kolik:** Zdarma **Program:** * 17:00 Vstup * 17:30 1️⃣ Rostislav Babáček: Boření zdí mezi iOS a Androidem * 18:00 2️⃣ Vít Nademlejnský: Swift pro Android. Konec pro KMP? * 18:30 3️⃣ Petr Polívka & Alexander Grigorov: Jak (ne)rozbít bankovní aplikaci při integraci KMP? * 19:00 Networking * 21:00 Konec akce, jde se domů! **Kapacita je omezená – registrujte se zdarma přes [Eventbrite](https://www.eventbrite.com/e/ackee-meets-mobile-development-ios-android-tickets-1981931329960).** Interakce tady na meetupu nestačí. Těšíme se! *V průběhu akce můžeme pořizovat a dále zpracovávat foto a video záznamy. Pokud si nepřejete, abychom vás fotili nebo natáčeli, dejte nám prosím vědět před začátkem akce.*

We are a group of runners who meet most weeks for a run around the beautiful Vltava River's edge. You can bring your running shoes straight from the office/home office if you don't have time to stop at home. There will be a place to put your bags in the Cafe. We will run about 9 km along the river and have a drink afterwards. Paces vary! We will meet in the square near Kavarna Liberal (Hermanova 6), near the Vltavska metro/tram stop at 6:30 on Wednesday. See you there!

In this workshop you will learn to make your own mini (25×25) or small rug (30×40) from scratch! No experience needed and all material provided. Feel free to join alone and meet people on the spot or bring a friend and share the fun! **Due to limited spots reservations are mandatory** - get your ticket on our website: www.tuftingprague.com/bookings Workshop is held in Letna, Kostelni 32.

**5-a-side Football** practice at Rajská Zahrada artificial grass pitch. No cleats shoes. Maximum of 15 participants for a 3 teams of 5 rotating. **Kick off at 18h00**. Everybody is welcome, no age, gender nor any restriction of any type to join. Cost: **90 crowns**. Please send the money using the **QR Code** stored here: https://imgur.com/a/G8NWGjM In case of any Opt-out within 24h of the session, or no show, the payment will be due (you still can ask someone to come instead of you, as your spot will be booked)

OPEN MIC \| JAM SESSION @ Tequila Tales Ready to step on stage, grab the mic, and let your talent shine? ✨ We’re launching a weekly Open Mic \| Jam Session — a vibrant\, inclusive space where artists come together to create\, experiment\, and perform in front of an energetic\, supportive crowd Every Wednesday First Edition: Wednesday, 21st January 2026 Who can perform? Poets & spoken word artists Stand-up comedians Musicians & bands Improv & theatre performers Magicians & experimental acts ⏱ Performance slots: 15–20 minutes Open format \| Free entry \| Community vibes only Want to perform? Sign up here: https://forms.gle/uwcZcDdGkBwM3Yqs9 ⏰ Signup deadline: Sunday 19:00 (same week) Final roster announced: Monday ⚠️ Late requests may be considered via WhatsApp on Monday & Tuesday only if slots are available — no guarantees once the lineup is full. Whether you’re testing new material, performing for the first time, or just soaking in the creative energy — this stage is yours Come perform, come support, come vibe ✨ Every Wednesday. One mic. Endless talent.

This time we are going to experience the world-famous spa town of Karlovy Vary, a spa town situated in western Bohemia. We will admire the grand 19th-century spa architecture, stroll along the impressive colonnades, and sip the presumably health-restoring sulphurous waters from 12 different springs in spouted ceramic drinking cups. One of the most famous attractions is the hot spring that spews out hot thermal waters to a height of 12 meters. Distance : 10 km (about 5 hours) Difficulty Rating : Easy Tour Highlights: • Professional and friendly guide • Transportation by air-conditioned bus • Visit the Mill & Market Colonnade • Entrance to the Church of St. Mary Magdalene • Visit and tour the Vrídelní Kolonáda underground spa’s inner workings) • Entrance to the Diana tower lookout • Entrance to St. Peter and Paul Cathedral • Visit the Japanese Garden • Moser glassworks tour OPTIONAL • Entrance to Jan Becher Museum (includes tasting of 4 different types of Becherovka) • Thun Porcelain Shop More information at : https://www.facebook.com/events/1425899982330883/

Bitcoin Knots a podobné implementace se snaží vynucovat content policy na úrovni mempoolu a odmítají transakce považované za nežádoucí (označované za spam). Lukáš, náš expert na Rust a bitcoin, vám osvětlí tento problém v teorii i v praxi. ** 18:00 - 19:00: PREZENTACE** Tato přednáška vysvětluje, proč je filtrování transakcí na základě obsahu neúčinné v jakékoli vrstvě bitcoinového protokolového stacku. Představí dva vzájemně se doplňující argumenty. 1. Z pohledu topologie sítě: v gossip síti, kde i malá menšina uzlů zůstává permisivní, transakce s vysokou pravděpodobností obejdou filtrované uzly. 2. Z pohledu informační teorie: každý protokol, který je dostatečně expresivní, aby byl užitečný, nutně umožňuje steganografické kódování. Prostor platných transakcí je natolik velký, že do něj lze vložit libovolná data způsobem nerozlišitelným od běžné ekonomické aktivity. Filtrování na základě obsahu tak čelí protivníkovi s větším počtem stupňů volnosti než má samotný filtr. ** 19:00 - 19:30: LIVE DEMO + Q&A** Součástí prezentace bude živá ukázka agresivního relay uzlu napsaného v Rustu, běžícího na mainnetu, která v reálném čase ukáže tok transakcí napříč různými implementacemi uzlů. ** 19:30** **\- 22:00: NETWORKING** Po přibližně 60minutové prezentaci a Q&A zůstáváme na networking u piva, zhruba do 22:00. * **Vstup s registrací zdarma.** * **Pivo zdarma** pro prvních 50 hostů. * **Odměny** za nejlepší otázky. * **Knihy** od Braiins **zdarma**. ** PŘEDNÁŠEJÍCÍ** Lukáš Hozda je expert na Rust, autor knihy Building Bitcoin in Rust a lektor Rust kurzů na Univerzitě Karlově. Přes den pracuje v pražské bitcoinové softwarové společnosti Braiins, kde jeho oficiální pracovní titul zní Braiins Superman. * Stáhněte si jeho eBook [Building Bitcoin in Rust zdarma](https://braiins.com/books/building-bitcoin-in-rust). * Sledujte Lukáše na X: [https://x.com/LukasHozda](https://x.com/LukasHozda) Pokud vás zajímá seriózní Rust engineering, přidejte se k nám. https://braiins.com

Ahoj Péhapkáři! Zveme vás na další sraz komunity. 17:30 – open doors 18:00 – přednášky 20:00 - kvíz & networking Program: David Chodúr - Využijte "skills" s AI agenty pro PHP Jirka Pudil - Novinky v PHP 8.5 Milan Šulc - AI v OSS: Jak jsem naboostoval vývoj oss knihoven s AI tooly \-\-\-\- Děkujeme našim partnerům a těšíme se na viděnou! Adresa: Alma Career - Dock in Five, Menclova 2538/2, Libeň \-\-\-

**⚠️** You must register for the event on [Luma](https://luma.com/6lta7zul?utm_source=meetup) **⚠️** **Come have a cozy chat about Kotlin!** ​​ ​​Join us for a casual evening of conversation with fellow Kotlin enthusiasts. ​​ ​​**What to expect:** A relaxed atmosphere where you can share your use cases and real-life scenarios, or learn what others are working on. No presentations, no formal agenda—just great conversations. ​​ ​​**Who's invited:** All Kotlin enthusiasts! Any experience level, any use case, any background. ​​ *Hosted by Yasan Ghaffarian (Senior Mobile Engineer)*

Hi All, Come and join the yearly tradition of the pancake run! We will meet at Metro station Malostranska (outside, next to Euro Hotdog), and from there run along the river, through Vysehrad and will end up in Vrsovice, close to tram stop Kubanske Namesti. There will be coffee and pancakes for all who arrive. The run will be around 10 km, with two uphill parts.

We’re excited to share that after a break, **Outreach meetups are back!** This time, we’re returning with a session focused on **engineering leadership**! This event is designed to inspire engineers and managers who want to unlock their full leadership potential without burning out along the way. Whether you’re considering a move into management, are new in the role, or already leading teams at scale, this meetup will offer **practical insights, real stories, and actionable takeaways** from experienced engineering leaders. *** ## Talks Schedule **17:30 – Doors open** **18:00 – Talk 1** **Christian Galatolo, Engineering Director @ Outreach** **How Senior Engineering Managers Scale Without Burning Out** Early in my management career, I unknowingly relied on principles to build a successful new business unit. Years later, with more experience and higher stakes, I learned which principles truly scale and which mistakes quietly turn managers into bottlenecks. This talk shares those lessons, grounded in real successes, real failures, and real pressure. **18:40 – Talk 2** **Michael Ruml, Director of Product Engineering @ Mews** **From Surviving to Scaling: Lessons from the First Year of Engineering Management** The transition from engineer to manager is one of the toughest shifts in tech. In this talk, Michael reflects on his first year as an Engineering Manager, unpacking the common traps, hard lessons, and mindset changes that make the difference between burnout and growth. A must-see for anyone navigating—or considering—the move into leadership. **19:30 – Networking** After the talks, stick around for networking, discussions, and getting to know fellow engineers and leaders. Outreach will provide **delicious snacks and drinks**, so you definitely won’t go hungry We’re really looking forward to seeing you there! \-\-\- *By taking part in this event, you grant the event organizers full rights to the use of images resulting from the photography/video filming, and any reproductions or adaptations of the images for fundraising, publicity, or other purposes. This might include (but is not limited to): the right to use them in printed and online publicity, social media, and press releases.* *If you don’t wish to be photographed, please inform us when you arrive.*

Been putting something off for too long? Join us for our **Bi-Weekly** **Co-Working Session** in creative driven **Safe Space Bookstore** — and let’s finally get it done, together. **Want reminders or to connect with others before/after?** Join our [WhatsApp group](https://chat.whatsapp.com/K6LidaoQhe16wZ0Se9pNM6), Keep contact via [Instagram](https://www.instagram.com/nocrastinationclub/) This is a soft, safe, supportive in-person space to move through procrastination with presence and companionship. Whether you’re working on admin tasks, tax return, writing, creative projects, or simply clearing your inbox — bring whatever you’ve been avoiding and we’ll gently focus beside you. **Time**: 3:00 PM – 6:00 PM **Location**: Jaz in the City – Ground Floor Lounge: Windmühlgasse 28, 1060 Vienna, Austria **Bring**: Your laptop, journal, creative tools, or anything you’ve been procrastinating on **Hosted by**: NoCrastination. ☕ Please do order something from the bar, so as to keep us in their good graces! Donations optional. **Seating information:** * If this is your first time joining us, please look for **Fernando Goncalves** when you arrive * If you’d like to **work independently (without the Pomodoro arrangement)** but still be part of the group energy, just let Fernando know — we’ll make sure you’re comfortably included. **What to Expect** * **Drop in anytime** between **3:00–6:00 PM** — stay for a bit or settle in for the whole session * **Clarify your goals**: write down your measurable tasks for the day on a Post-it when you arrive * **Two spaces**: one for quiet focus, one for casual conversation. After each focus session, if you’re still in the flow, feel free to remain seated — no need to move. If you're up for a chat, join others in the social area for a relaxed break. * **Social start**: from **3:00 to 3:30 PM**, we mingle and get to know each other; our first focus session begins at **3:30 PM** * **Gentle structure**: we begin with a soft check-in and intention round * **Pomodoro-style rhythm**: We work in 45-minute focus blocks followed by 15-minute social breaks. If 45 minutes feels too long, feel free to break it into two 20-minute focus sessions with a short 5-minute reset in between. You’ll need to self-regulate these shorter cycles, just tune into your own flow and rejoin when ready. * **Quiet companionship**: no pressure to talk during focus time — just shared presence and support * **Welcoming space**: we meet in the creative, cozy lobby of the **Safe Space Bookstore** **New to Pomodoro?** Don’t worry — we’ll guide you gently. No apps or timers needed. Why Join? * Beat procrastination with gentle accountability * Reclaim your momentum without doing it alone * Enjoy a change of scenery that boosts your focus * Be part of a community that shows up — without hustle Bring your project. Bring your presence. Let’s work side-by-side.

**IMPORTANT! Please register on Luma page:** https://luma.com/h71ibm12 ​Join the **Prague Bingo Networking** meetup! ​We’re getting Creative and Tech folks together to network the honest way, through shared, painfully familiar work truths. ​**What is it?** Think of it as an *Anti-Icebreaker Game*. No awkward small talk. No forced networking. ​We’ve collected the thoughts everyone has at work (but never says out loud) and turned them into a fast, interactive **Bingo game**. ​**What we will do:** No laptops. No presentations. ​Just people, music, drinks, and Bingo cards full of “too real” work-life confessions. ​You’ll mark off squares, laugh, cringe, and inevitably say: *“Yep. Same.”* ​**Who is this for?** Creative and Tech Folks who want to meet peers, swap knowing looks, and realize they’re not alone in this industry. ​❗If your plans change after registering, please cancel your spot, it helps someone else join. ​**When & where** 26.02.26 18:00 - 20:00 Prague Time (CET) VNITROBLOCK Tusarova 31, 170 00 Praha 7 ​ Language: English ​Please arrive 5–10 minutes early to grab a drink and settle in before we start (so we can kick off on time). ​**Agenda** Welcome & rules Bingo rounds Networking & chaos Wrap-up ​See you at **Prague Bingo Networking**

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.

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** *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

Come attend a free in-person seminar where you will find out why you: -Feel isolated -Can't express yourself openly -Get nervous or anxious in front of people -Run out of things to say or feel tongue-tied -Feel introverted -Don't feel comfortable in any social setting -Can't make more friends -Are shy and miss opportunities to connect in a meaningful way And we cover what you can do about any one, some or all of the above. This seminar is the weapon against loneliness, isolation and boredom, come join us! COME TO THIS SEMINAR AND LEARN THE SECRETS TODAY This seminar is brought to you by the Dianetics & Scientology Life Improvement Center. 1266 Dublin Road, Columbus, Ohio 43215

**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)

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm

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