App Designers

Hey everyone! Join us for our next meetup on **May 27th** starting at **18:00** at a new venue - **Pogon Mislavova** (Kneza Mislava 18). We'll have an interesting talk by our own Vitaliy, followed by our usual networking. Afterwards, we'll either stay at Pogon or head to a nearby bar (Canopy Bar sounds like a good option). \*\*\* Electron in Production: Building Efficient Desktop Apps with Native Modules by **Vitaliy Yunikov** VS Code, Slack, Figma, Linear, Notion — a lot of the desktop apps web developers use daily - are all Electron. Electron also has a reputation for being slow and bloated. Both are true: a well-built Electron app feels native, a default one doesn't. This talk covers what production Electron teams know that the docs don't tell you. We'll go through the process model and what each process costs, the security defaults you need from day one, the JS-side performance moves that buy back the memory Chromium charges, and what happens when pure JavaScript stops being fast enough - going native with N-API, including the data, threading, and memory contracts that surprise even experienced JS developers. Hope to see you there! Marcela

Marketingaši se često susreću s paradoksom da imaju više kanala i alata nego ikad, a sve je teže postići opipljive rezultate. Ako vam ovo zvuči poznato, **[događaj](https://go.leverup.io/leverup_braze_zagreb_2026?utm_source=Meetup&utm_medium=events&utm_campaign=Braze_events_2026)** koji **[𝗟𝗲𝘃𝗲𝗿𝗨𝗣](https://leverup.io/braze/?utm_source=Meetup&utm_medium=events&utm_campaign=Braze_events_2026)** organizira s **[𝗕𝗿𝗮𝘇𝗲𝗼𝗺](https://www.braze.com/?utm_source=Meetup&utm_medium=events&utm_campaign=Braze_events_2026)** je baš za vas. ✅ LeverUP, zagrebačka konzultantska tvrtka specijalizirana za customer engagement poziva vas na ekskluzivni događaj ***[Više kanala, više alata… a manje rezultata?](https://go.leverup.io/leverup_braze_zagreb_2026?utm_source=Meetup&utm_medium=events&utm_campaign=Braze_events_2026)*** Pokazat ćemo vam što Braze, vodeća svjetska platforma za customer engagement, može učiniti za vaše poslovanje i kako spaja podatke, kanale i personalizaciju na jednom mjestu i koristi ih u stvarnom vremenu. ⌛ **𝗞𝗮𝗱𝗮?** 27\. svibnja 2026\.\, od 10:00 do 13:00 sati 📍 **𝗚𝗱𝗷𝗲?** Hotel Zonar, Trg Krešimira Ćosića 9, Zagreb **Što vas sve čeka:** ✅ koliko zapravo znate o svojim kupcima? ✅ po čemu je Braze drugačiji od drugih platformi - višekanalna komunikacija, personalizacija, metrike ✅ interaktivni live demo - kad Braze Agent radi umjesto vas ✅ konkretni odgovori, a ne teorija - kako su brendovi povećali konverzije i lojalnost kupaca pomoću Brazea ✅ networking i razgovor s ambicioznim marketingašima u opuštenoj atmosferi Hotela Zonar ✅ piće i hrana Dress code - business casual Broj mjesta je ograničen. **[➡️ 𝗣𝗿𝗶𝗷𝗮𝘃𝗶𝘁𝗲 𝘀𝗲 𝗽𝘂𝘁𝗲𝗺 𝗹𝗶𝗻𝗸𝗮.](https://go.leverup.io/leverup_braze_zagreb_2026?utm_source=Meetup&utm_medium=events&utm_campaign=Braze_events_2026)** Veselimo se vašem dolasku. 🙂

Combinatorial optimization problems arise across logistics, scheduling, and engineering, and C++ remains a language of choice when performance matters. This lecture takes a practical look at solving such problems in C++, using the Electric Vehicle Routing Problem as a running example. We begin with an exact solver, formulating the problem as a mixed-integer program and trying to solve it through GLPK's C API directly from C++. Exact methods, however, quickly hit their limits on real-world instances. The second half of the talk turns to metaheuristics: how they are designed, why C++ is particularly well suited for implementing them, and what design choices matter most in practice. We'll walk through a concrete implementation, touching on data structures for fast neighborhood evaluation, generic algorithm design with templates, and the performance considerations that separate a prototype from a production-ready solver. The goal is not to advocate for one approach over another, but to show how C++ supports the full spectrum of optimization techniques.

Pozdrav Gopheri, Novi meetup! Tema ovog druženja je: Gdje idu moji paketi? Vodič kroz Go projektne strukture. Lokacija je: Dvorana C na Tehničko veleučilište u Zagrebu Borongajska cesta 83E, 10000, Zagreb, Croatia https://maps.app.goo.gl/1jKZDsiqMbhZc7136 Besplatni parking je moguć ispred zgrade Veleučilišta. Kao i uvijek, pozivamo vas da nam se javite s temom za predavanje. Dobrodošle su i teme za manje iskusne sudionike. Također vas pozivamo da nam se pridružite na Gophers slack kanalu: #croatia https://invite.slack.golangbridge.org/ \-\-\- Hello Gophers New meetup! The topic of this meeting is: Where do my packages go? A guide to Go project structures. The location is: Hall C at Zagreb University of Applied Sciences (Tehničko veleučilište u Zagrebu – TVZ) Borongajska cesta 83E, 10000, Zagreb, Croatia https://maps.app.goo.gl/1jKZDsiqMbhZc7136 Free parking is available in front of the University building. As always, we invite you to contact us with a topic for a talk. Topics for less experienced participants are also welcome. We also invite you to join us on the Gophers slack channel: #croatia https://invite.slack.golangbridge.org/

Marketingaši se često susreću s paradoksom da imaju više kanala i alata nego ikad, a sve je teže postići opipljive rezultate. Ako vam ovo zvuči poznato, **[događaj](https://go.leverup.io/leverup_braze_zagreb_2026?utm_source=Meetup&utm_medium=events&utm_campaign=Braze_events_2026)** koji **[𝗟𝗲𝘃𝗲𝗿𝗨𝗣](https://leverup.io/braze/?utm_source=Meetup&utm_medium=events&utm_campaign=Braze_events_2026)** organizira s **[𝗕𝗿𝗮𝘇𝗲𝗼𝗺](https://www.braze.com/?utm_source=Meetup&utm_medium=events&utm_campaign=Braze_events_2026)** je baš za vas. ✅ LeverUP, zagrebačka konzultantska tvrtka specijalizirana za customer engagement poziva vas na ekskluzivni događaj ***[Više kanala, više alata… a manje rezultata?](https://go.leverup.io/leverup_braze_zagreb_2026?utm_source=Meetup&utm_medium=events&utm_campaign=Braze_events_2026)*** Pokazat ćemo vam što Braze, vodeća svjetska platforma za customer engagement, može učiniti za vaše poslovanje i kako spaja podatke, kanale i personalizaciju na jednom mjestu i koristi ih u stvarnom vremenu. ⌛ **𝗞𝗮𝗱𝗮?** 27\. svibnja 2026\.\, od 10:00 do 13:00 sati 📍 **𝗚𝗱𝗷𝗲?** Hotel Zonar, Trg Krešimira Ćosića 9, Zagreb **Što vas sve čeka:** ✅ koliko zapravo znate o svojim kupcima? ✅ po čemu je Braze drugačiji od drugih platformi - višekanalna komunikacija, personalizacija, metrike ✅ interaktivni live demo - kad Braze Agent radi umjesto vas ✅ konkretni odgovori, a ne teorija - kako su brendovi povećali konverzije i lojalnost kupaca pomoću Brazea ✅ networking i razgovor s ambicioznim marketingašima u opuštenoj atmosferi Hotela Zonar ✅ piće i hrana Dress code - business casual Broj mjesta je ograničen. **[➡️ 𝗣𝗿𝗶𝗷𝗮𝘃𝗶𝘁𝗲 𝘀𝗲 𝗽𝘂𝘁𝗲𝗺 𝗹𝗶𝗻𝗸𝗮.](https://go.leverup.io/leverup_braze_zagreb_2026?utm_source=Meetup&utm_medium=events&utm_campaign=Braze_events_2026)** Veselimo se vašem dolasku. 🙂

\*\*\*\* Practice Foreign Languages with Native Speakers \*\*\*\*\* === \*\*\*\*\*\*\*\*\*\*\*\* at the Language Conversation Table \*\*\*\*\*\*\*\*\*\*\* === \*\*\*\* Practice Foreign Languages with Native Speakers \*\*\*\*\* === \*\*\*\*\*\*\*\*\*\*\*\* at the Language Conversation Table \*\*\*\*\*\*\*\*\*\*\* === The caffe Cukeraj provides us with a back-room reserved just for this event, where we get to practice Croatian and other languages three hours for free.The entrance is free, but to be sure that Domenico will continue to host us, please have at least one drink when you're coming.at Cukeraj, Petrinjska 61See you soon!P.S. IF U HAVE ANY PROBLEMS FINDING THE PLACE BE FREE TO CONTACT THE ORGANIZER: +385953913346 \*\*\*\*\* Vježbajte Strane Jezike sa Izvornim Govornicima \*\*\*\*\* === Za organizaciju događaja se ne mora nista platiti. Radi korištenja prostora u kafiću (koji se nalazi u dvorišnoj zgradi) , bilo bi poželjno kad bi svatko naručio barem jedno piće. Nedjelja 18:00 - 21:00 sati Cukeraj Petrinjska 61

⚽️ Football game in Zagreb — Saturday, 30th of May We’re organizing a pickup football game in Zagreb on Saturday, 30th of May from 16:00 to 17:00. If you’re interested, just join/apply if you can make it. 🌍 International vibe — everyone is welcome 🤝 Friendly but competitive game 💪 Good energy and respect on the pitch 📍 Location details to be shared.

Join us for a casual drinkup at Dribbling Food&Caffe. Come for drinks, stay for conversations (about programming). Everyone is welcome, don't be shy! Hope to see you there!

Combinatorial optimization problems arise across logistics, scheduling, and engineering, and C++ remains a language of choice when performance matters. This lecture takes a practical look at solving such problems in C++, using the Electric Vehicle Routing Problem as a running example. We begin with an exact solver, formulating the problem as a mixed-integer program and trying to solve it through GLPK's C API directly from C++. Exact methods, however, quickly hit their limits on real-world instances. The second half of the talk turns to metaheuristics: how they are designed, why C++ is particularly well suited for implementing them, and what design choices matter most in practice. We'll walk through a concrete implementation, touching on data structures for fast neighborhood evaluation, generic algorithm design with templates, and the performance considerations that separate a prototype from a production-ready solver. The goal is not to advocate for one approach over another, but to show how C++ supports the full spectrum of optimization techniques.

**Kako Gradska uprava može poboljšati život građanima uz pomoć umjetne inteligencije (AI)?** Koristi li se AI u svakodnevnom radu održavanja sigurnosti u prometu i održavanju infrastrukture? Kako koristiti AI tehnologiju u suradnji sa ostalim gradovima, ali i EU zemljama i tvrtkama? **Zoran Cetinjanin**, **Mario Novosel** i **Marino Ivasić** iz Gradske uprave Grada Karlovca, pokušat će ukratko prikazati rješenja koja se koriste kako bi svima nama podigla kvalitetu, a uz pomoć najnovije tehnologije. Zoran i Mario kao IT-evci sa više od 20 godina rada u Upravi (Katica za sve i oni koji odrađuju sve AjTi probleme u Upravi) stvorili su image Grada Karlovca kao jednog od najinovativnijih „SMART“ gradova u HR. Kako i kojim tehnologijama - pokušat će prezentirati dio rješenja. Marino koji upravlja prometom u našem gradu (ali uz pomoć najnovijih tehnoloških rješenja) pokušat će vam dočarati taj „underground“ svijet da prikaže koliko mu ta tehnologija pomaže da rješava svakodnevne probleme, ali i djeluje proaktivno. Prezentacija ima cilj da potakne ostale na razvoj različitih rješenja kako bi jednog dana imali naš **#KaFrameWork** za AI. Svi ste pozvani da sa svojim idejama, pomognete u daljnjem razvoju, a interesantno će biti čuti i na koji način razvijamo suradnju sa ostalim članicama EU.

**TBA**

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/

We meet to learn and practice American Sign Language and to grow our familiarity with Deaf culture. Facilitated by hearing folks (with a connection to a professional interpreter) using Deaf-created content. People of all ASL skill levels are welcome! As we learn, we hope to connect more with the Deaf community in Central Ohio. Join us as you're able! Come regularly or just once - whatever you're looking for! Each meetup will explore different topics related to ASL/Deaf culture, and will feature time to practice conversation with one another. Just bring yourself and a willingness to learn!

**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** Like it or not, AI agents are now capable of turning a quickly written paragraph of requirements into a pull request that is ready to be integrated into real-world production applications and it's now our responsibility to make sure AI doesn't go rogue and take down prod - or corrupt our data by misunderstanding the requirements or our existing schemas. In this session we'll explore strategies to protect our codebases through unit and integration testing, documentation, and code review along with additional ways of providing context and guard rails to our AI agents as they carry out the work we've assigned them to do. By the time we're done, you'll have a firm grasp of the problem and understand some helpful options for protecting your codebase from vibe coding mishaps getting YOLOed into prod. **YouTube Link** https://youtube.com/live/BltmWMH1zG0?feature=share

PLEASE NOTE!!! This event will be In-Person for our very 1st Improving collab! If you know the [Columbus Unity group](https://www.meetup.com/columbus-unity-user-group/) location, we'll be at the same place. This is our 1st event and are doing a soft launch with limited attendance. 1st come 1st serve. If you want to be there and we fill up, please email me at [info@thecogg.com](mailto:info@thecogg.com) and I'll be in touch. All street parking is free on Sundays but you can also pay to park in any of the local garages. See image of [parking map here](https://drive.google.com/file/d/1Mr9_LFIggbs-0_Zd3AJTGNqEhgMf2TzQ/view?usp=sharing). \-\-\- On the last Sunday of the month, we're having our usual end-of-the-month social gathering with our GameDev Meetup meeting. There will be announcements and presentations followed by some social networking Let's continue the conversations with good vibes and friends. All are welcomed from all ages and backgrounds to this public event. If we can, we'll be streaming or uploading the video later via our COGG YouTube channel here: [https://www.youtube.com/@TheCOGG/streams](https://www.youtube.com/@TheCOGG/streams) (Also please do subscribe if you have not done so!) No game development experience required! If you are interested in doing a 20 minute game development related presentation, please fill out our form online here: [https://goo.gl/forms/lVdTJZiNJewlPJuj1](https://goo.gl/forms/lVdTJZiNJewlPJuj1) Or e-mail us at info@thecogg.com with the following: Your Name, Company/Affiliation, Name of Your Game/Topic, Description, Tech Needs, and Your Contact. Be sure to check out our Discord for real time news updates: [https://discord.gg/NrBhuNQ](https://discord.gg/NrBhuNQ)

**TBA**

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)