Open Source

We are back with a new AWS User Group Athens meetup, and this time we are going deep into serverless, long-running workflows and the new possibilities unlocked by AWS Lambda Durable Functions. Modern applications often need to coordinate retries, state, delays, callbacks, human-in-the-loop steps, and distributed business logic. Traditionally, that usually meant external orchestration, explicit state machines, or custom persistence logic. In this meetup, we will explore how AWS Lambda Durable Functions can simplify that model by letting developers express reliable, long-running workflows directly in familiar programming languages. We will have two technical sessions: first, a deep dive into the core concepts of AWS Lambda Durable Functions and how they compare with AWS Step Functions; then, a practical session on building resilient conversational AI workflows with Amazon Bedrock agents and the Sinch Conversation API. A big thank you to **Epignosis** for hosting us at their HQ for this meetup. **Important venue information** This meetup will take place at **Epignosis HQ**. Please check the map and venue instructions carefully before arriving. The venue’s security team will be checking IDs at the entrance. For this reason: * You must provide your **full name** when RSVPing. * You must bring a **valid ID** for entry. * RSVP will close **2 days before the event** so that the attendee list can be shared with the venue. Please make sure the name on your RSVP matches your ID. *** **Agenda** **18:00 – 18:30:** Entry & networking **18:30 – 19:20:** Deep Dive on AWS Lambda Durable Functions Speaker: [Lefteris Karageorgiou](https://www.linkedin.com/in/lefteriskarageorgiou) **19:30 – 20:20:** Building Conversational Agents in Code with AWS Lambda Durable Functions Speaker: [Gunnar Grosch](https://www.linkedin.com/in/gunnargrosch/) **20:30 – open end:** Networking, 🍕🍻 *** **Session 1: Deep Dive on AWS Lambda Durable Functions** AWS Lambda Durable Functions makes it easier to build reliable, fault-tolerant applications using familiar programming languages like JavaScript, Python, and Java. In this session, we will explore how durable functions simplify retries, state management, and human-in-the-loop workflows for long-running processes, and how they compare with AWS Step Functions for orchestrating distributed applications. Through a live demo, you will learn how to use features like “steps” and “waits” directly in your IDE to handle failures, track progress, and orchestrate business logic with less complexity. **About the speaker** [Lefteris](https://www.linkedin.com/in/lefteriskarageorgiou/) is a Senior Solutions Architect at AWS with 20 years of experience in software engineering, specializing in serverless architectures. He is the author of the book **“Mastering Event-Driven Microservices in AWS”** and runs a weekly newsletter, **“The Cloud Engineers,”** where he shares insightful articles on cloud computing. Passionate about sharing his knowledge, Lefteris is a public speaker and frequently speaks at technical conferences such as AWS re:Invent, AWS Summits, and Devoxx. *** **Session 2: Building Conversational Agents in Code with AWS Lambda Durable Functions** Building multi-agent AI workflows usually requires complex state machines to handle unpredictable human delays. Building on the core concepts of AWS Lambda Durable Functions, this session dives into applied agent orchestration. We will coordinate Amazon Bedrock conversational agents using the Sinch Conversation API to handle inbound interactions. You will learn how to dispatch specialized AI agents, use callbacks to handle asynchronous human input natively, and build resilient, long-running chat architectures entirely in code. **About the speaker** [Gunnar Grosch](https://www.linkedin.com/in/gunnargrosch/) is a Developer Advocate at Sinch and an engineer with over 25 years of experience building software, scaling developer communities, and making complex technology accessible. He started as a community member, became an AWS User Group Leader, was named an AWS Serverless Hero, and spent more than five years as a Developer Advocate at AWS, rising to Principal. Gunnar sits between the people who build the tools and the people who use them, making both sides better by bringing community feedback back to product teams. *** Whether you are building serverless applications, distributed workflows, AI agents, event-driven systems, or just want to understand where Lambda Durable Functions fit in the AWS ecosystem, this meetup is for you. Join us for deep technical content, practical demos, great speakers, and the usual AWS community networking.

🇬🇷 **Athens, we're getting together — and this one's going to make you think differently.** The QA community in Athens is coming together on **June 4th** for an evening of bold ideas, sharp conversation, and the kind of networking that actually sticks. This edition explores two fascinating intersections that don't get talked about enough — what does linguistics have to do with Black Box Testing? And what happens when quality engineering meets SEO? More than you'd think on both counts. **AGENDA** **\- Welcome & Introductions** - **Featured Sessions:** **Knowing the Next Big Thing: Black Box Testing and Linguistics** *by Apostolos Moutiakas* When we test a system without knowing its internals, we're essentially decoding behaviour through inputs and outputs — not unlike how we interpret language. This session digs into that connection and what it means for how we approach quality. **The Engineering Side of SEO: Diagnosing Technical Website Failures** *by Anatoliy Molodechkin* SEO isn't just a marketing problem — it's an engineering one. This session explores how QA thinking applies to diagnosing and fixing the technical failures that silently hurt your website's performance. -**🍕F&B, Networking & Fun** Whether you're a seasoned QA engineer, a curious developer, or someone exploring the craft of software quality — this is an evening worth clearing your calendar for. Expect great conversation, good company, and networking with Athens' finest QA minds. **Spots are limited — RSVP now to secure yours!** 📍 Zone01, Athens 🗓️ Thursday, 4 June 2026 🕡 6:30 PM \| 3 Hours **A Few Notes:** ✅ This is an in-person event ✅ RSVP does not guarantee a seat — A confirmation email will be sent one day before the event.

Athens Fun Connection is teaming with TenTwenty club for a new weekly event. https://maps.app.goo.gl/Rm36LxdydYFgu4yn7 Imagine a day where you can combine working and taking care of yourself! What is CoWork & Reset? \- It's a full day of work from 10 to 17h designed for remote workers\, digital nomads\, and entrepreneurs\, or everyone who wants to have a good day\. For those who wish to stay longer\. The club is open until 23h \- set in a beautiful location with access to a gym\, sauna\, ice barrel\, tennis/padel courts\, and the beach \- with a free workshop most of the week\, learn something new every week \- work inside or outside\, in a more natural environment This week's workshop is: Build as you go. Improv tools for confident communication and dynamic teamwork with Lena Ivros Lena Ivros Improv theater teacher and founder of Lena’s Improv Place Tag: @lenasimprovplace You can choose between 2 packages: 25€: Free lunch (1 savoury + 1 sweet from the menu), UNLIMITED coffee or tea, access to the gym, sauna, and :ice barrels, free workshop, access to the beach, and everything the club offers. 30€: everything included in the 25€ + 1hour rental of a tennis, padel, or pickleball court. Mention Athens Fun at the reception, and they will guide you. See you there for a productive and reset day, Athens Fun & Connection team

Jump in our whtsapp group,introduce yourself, start connect,put your ideas and lets hangout and make friends [https://chat.whatsapp.com/EDf4HaUjK4gLMMQeiOsllt](https://chat.whatsapp.com/EDf4HaUjK4gLMMQeiOsllt) Athens, Thursday nights are for real connection 🤍✨ Not pressure. Not awkwardness. Just an easy, welcoming social night at Mint Bar 🍸 where strangers become friends. This event is for locals 🇬🇷, travelers ✈️, expats 🌍, creatives 🎨, and people from every social media platform 📱 who want something real: good energy ⚡, honest conversation 💬, and a night that feels natural from the moment they walk in. If you usually go out alone, feel shy in new groups, or stay home because it feels easier 🏠… this night is made for you 🤍 Come as you are ✨ Arrive solo 🚶 Leave with new faces 😊, new stories 🌙, and maybe even people you’ll see again 🫶 🌊 What to expect • A warm, friendly crowd 🤝 • Easy conversations and open introductions 💬 • A relaxed atmosphere where nobody feels left out ✨ • People from different backgrounds, lifestyles, and cultures 🌍 • A social night that helps you step out of your routine 🔥 You do not need to know anyone 🙌 You do not need to be outgoing 😌 You just need to show up 💫 🍷 Drink Deals • Sangria — €3 🍷 • Shots — €2.5 🥃 • Cocktails — €7 🍸 • Beer — €5 large / €4 small 🍺 🎶 The Atmosphere Good music 🎧 Beautiful energy ⚡ Real people 💬 A space where conversations matter more than noise ✨ 📍 Event Details 📅 Every Thursday 🕣 20:30 – 00:00 📍 Mint Bar https://maps.app.goo.gl/8NVynTC1tBNP5aTy6?g_st=ac 🎟 FREE Entry — just say you’re with the community 🤍 🌟 Why people come back Because it feels easy 🌙 Because it feels human 🤍 Because one night out can change your mood, your week, or even your life ✨ Come alone 🚶 Meet strangers 🤝 Feel part of something 🌍 🔥 Thursday at Mint Bar 🔥 Mamad Organizer of Athens Locals & Travellers Events Whtsap 0030694952862 Follow us on instagra And make us gro Thanks in advanc [ https://www.instagram.com/athenslocalstravellers?igsh=MWM4MTh4c2p5M3NxdA=](https://www.instagram.com/athenslocalstravellers?igsh=MWM4MTh4c2p5M3NxdA==) travel, meetup night, night out, city adventures, bar night, social event, friendship, network, mingle, explore city, evening fun, solo night, group meetup, local hangout, international friends, nightlife lovers, weekend fun, party vibes, cocktails night, live music, clubbing, coffee meet, brunch meetup, cultural events, street tours, urban life, nightlife adventure, new connections, chat night, fun night, singles meetup, evening drinks, meet & greet, food tour, sightseeing, art events, music night, rooftop bar, sunset party, festival, theater night, karaoke night, games night, pub crawl, city nightlife, travel buddies, hangout night, casual datin ταξίδια, meetup βράδυ, νυχτερινή έξοδος, περιπέτεια πόλης, βραδιά μπαρ, κοινωνική εκδήλωση, φιλία, δικτύωση, γνωριμίες, εξερεύνηση πόλης, βραδινή διασκέδαση, μόνος βράδυ, ομάδα meetup, τοπικό hangout, διεθνείς φίλοι, λάτρεις της νυχτερινής ζωής, Σαββατοκύριακο διασκέδαση, vibes πάρτι, βραδιά κοκτέιλ, ζωντανή μουσική, κλαμπ, καφές meetup, brunch meetup, πολιτιστικές εκδηλώσεις, περιήγηση δρόμου, ζωή στην πόλη, νυχτερινή περιπέτεια, νέες συνδέσεις, βραδιά κουβέντας, διασκεδαστική νύχτα, meetup σινγκλς, βραδιά ποτών, γνωριμία & χαιρετισμός, food tour, αξιοθέατα, εκδηλώσεις τέχνης, μουσική βραδιά, ταράτσα μπαρ, πάρτι ηλιοβασιλέματος, φεστιβάλ, θέατρο βραδιά, karaoke βραδιά, παιχνίδια βραδιά, pub crawl, νυχτερινή ζωή πόλης, ταξιδιωτικοί φίλοι, hangout βράδυ, casual ραντεβο

Athens, Thursday nights are for real connection 🤍✨ Not pressure. Not awkwardness. Just an easy, welcoming social night at Mint Bar 🍸 where strangers become friends. This event is for locals 🇬🇷, travelers ✈️, expats 🌍, creatives 🎨, and people from every social media platform 📱 who want something real: good energy ⚡, honest conversation 💬, and a night that feels natural from the moment they walk in. If you usually go out alone, feel shy in new groups, or stay home because it feels easier 🏠… this night is made for you 🤍 Come as you are ✨ Arrive solo 🚶 Leave with new faces 😊, new stories 🌙, and maybe even people you’ll see again 🫶 🌊 What to expect • A warm, friendly crowd 🤝 • Easy conversations and open introductions 💬 • A relaxed atmosphere where nobody feels left out ✨ • People from different backgrounds, lifestyles, and cultures 🌍 • A social night that helps you step out of your routine 🔥 You do not need to know anyone 🙌 You do not need to be outgoing 😌 You just need to show up 💫 🍷 Drink Deals • Sangria — €3 🍷 • Shots — €2.5 🥃 • Cocktails — €7 🍸 • Beer — €5 large / €4 small 🍺 🎶 The Atmosphere Good music 🎧 Beautiful energy ⚡ Real people 💬 A space where conversations matter more than noise ✨ 📍 Event Details 📅 Every Thursday 🕣 20:30 – 00:00 📍 Mint Bar https://maps.app.goo.gl/8NVynTC1tBNP5aTy6?g_st=ac 🎟 FREE Entry — just say you’re with the community 🤍 🌟 Why people come back Because it feels easy 🌙 Because it feels human 🤍 Because one night out can change your mood, your week, or even your life ✨ Come alone 🚶 Meet strangers 🤝 Feel part of something 🌍 🔥 Thursday at Mint Bar 🔥 Mamad Organizer of Athens Locals & Travellers Events Whtsap 0030694952862 Follow us on instagra And make us gro Thanks in advanc [ https://www.instagram.com/athenslocalstravellers?igsh=MWM4MTh4c2p5M3NxdA=](https://www.instagram.com/athenslocalstravellers?igsh=MWM4MTh4c2p5M3NxdA==) join our whtsapp group [ https://chat.whatsapp.com/EDf4HaUjK4gLMMQeiOsllt?mode=gi_](https://chat.whatsapp.com/EDf4HaUjK4gLMMQeiOsllt?mode=gi_t)

Want to practice your public speaking and communication skills? Want to overcome stage fright? Come to our next Toastmasters meeting! We are an open, friendly and fun group of people that practice public speaking and evaluate each other. We follow the Toastmasters methodology that has developed over 100 years and is being practiced in Greece since 2005. Meetings are open to all and require no preparation. For more information please consult: https://web.facebook.com/profile.php?id=61556529585790 We meet twice monthly, every 1st and 3rd Thursday of each month, from September until July (except of Christmas - New Year & Easter holidays). Αυτή θα είναι μία αγγλόφωνη συνάντηση. Για τις συναντήσεις μας στα ελληνικά επισκεφθείτε την σελίδα: https://www.meetup.com/ethos-pathos-logos-toastmasters-club

Meeting new people while drinking and dancing with music from a live DJ set. The genre of music is RnB Hip-Hop Pop and Rap 🔥. Because I host some of the events you'll need to say my name in the entrance Papadaki and it will be free. Bring as many friends as you want and let's have fun 🥳

This is our 2nd official meetup for the Greece PostgreSQL Users Group! Following our successful launch in Greece and our 1st ever meetup, we are branching out! Beyond standard flat tables to explore how PostgreSQL handles complex structural dimensions—from hierarchical tree structures to multidimensional geographic spaces. Our confirmed talks for the 2nd meetup: \- Introduction to Spatial Data with PostgreSQL/PostGIS\, George Capnias \- PostgreSQL & Tree Structures\, Kostas Maistrelis After the talks, you should expect networking and lively discussions over pizzas and soft drinks. RSVP is mandatory. Spaces are limited. Please ensure you RSVP here. If your plans change, please update your status to help us manage venue capacity. A special thanks to Snappi for generously sponsoring the venue for us! See you there!

PyData London 2026 brings together data scientists, engineers, and researchers from around the world for three days of insightful talks, tutorials, and community connection. Hosted in one of Europe’s leading tech hubs, the event highlights the latest developments in Python, machine learning, and data science. Attendees can expect a mix of cutting-edge research, real-world applications, and opportunities to network with industry leaders. Whether you're a beginner or an expert, PyData London offers something for every level of the data science community. **THIS IS NOT A TICKET- TICKETS MUST BE PURCHASED ON CONFERENCE WEBSITE.** https://pydata.org/london2026

The **Ministry of Testing Athens 18th** meetup is here. **Check our site for further information: [https://motathens.gr/](https://motathens.gr/)** The maximum number of attendees is 150. Please register early. Registrations are always **FREE.** You should create a free account and register. **🎟️ Registrations are available in the MoTaverse: [HERE](https://www.ministryoftesting.com/chapters/mot-athens/events/mot-athens-050626) 🎟️** After some days, you will receive a **QR code** **by email.** Use the code to check in upon arrival. * [Schedule of the meetup](https://motathens.gr/#schedule) * [Frequently Asked Questions](https://motathens.gr/faq) **🎟️ Registrations are available in the MoTaverse: [HERE](https://www.ministryoftesting.com/chapters/mot-athens/events/mot-athens-050626) 🎟️**

🎤 What if tonight, YOU were the one they couldn't stop cheering for? Every Friday in Athens, we hand the mic to expats, nomads, travellers and locals. Every single week, someone walks in nervous and leaves an absolute legend. This Friday, we're making it even bigger. We're holding a Best Song Contest. Any song. Any language. Any year. No cliques. No awkward corners. Just a room full of strangers who become your loudest fans by the end of the night. 🏆 Best Song Contest: Special Prize for the Winner 📍 YellowSquare Athens 🗓 Every Friday · 9PM 🌍 Hosted by Nomad Hub Greece 🔗 Reserve now to grab your spot - seats fill fast: www.nomadhubgreece.com Come as a stranger. Leave as a legend. 🎶

Just landed in Athens — or been here a while but still looking for your crowd? If you’re an expat or digital nomad tired of small talk and ready for real connections, this is where your Friday night levels up. Join us at Bar Zero at Yellowsquare Athens for a high-energy Karaoke night of music, dancing, and friendly vibes with Athens’ international community. Expect: 🎶 Crowd-favorite songs you can’t resist singing 💃 A dance floor that doesn’t quit 🍻 Drinks flowing all night 📸 The kind of memories that make you stay “just one more hour” No awkward networking. No pressure. Just good people, big energy, and the perfect excuse to let loose. 🔥 Spots fill fast — reserve your table now and secure your crew’s place before it’s fully booked. Follow Nomads Athens on social media for more info: \*Facebook: [https://www.facebook.com/groups/780495963217496/](https://www.facebook.com/groups/780495963217496/) * Instagram: [https://www.instagram.com/nomadhubgreece](https://www.instagram.com/nomadhubgreece) \*Telegram: [https://t.me/nomadhubgreece](https://t.me/nomadhubgreece)

⚠️ **IMPORTANT: You must sign up and buy a ticket here to attend:** [https://groupvibe.com/](https://groupvibe.com/) **Join the Athens Brunch Club and make new friends!** Each meetup brings together 4–6 people for casual conversations over brunch. We use the Groupvibe platform to facilitate the meetup and ensure everyone’s a good fit. 👉 **To attend, you’ll need to complete registration via this link:** [https://groupvibe.com/](https://groupvibe.com/) We’ll share the exact location of the upcoming meetup the night before only if you have bought a ticket or membership plan. **Why this works:** \* Smaller groups make real conversations easier. \* Discover new brunch spots in your city, together. \* Curated brunch venues with good food and vibe. \* If you hit it off with your brunch group, there’s plenty of time to hang out afterwards. **Note:** RSVPs on Meetup don’t reflect total attendance. Many attendees register directly via our website. The event on Meetup.com is only a placeholder. This meetup is organized by Groupvibe, a small team passionate about helping people form meaningful friendships offline.

Heyyyy lovely people! 💙 The summer just started and we’re taking the party out to sea! 🛳️ Join us this Sunday, June 7th, for a breathtaking island-hopping dance cruise! 🌴 What’s waiting for you: 🏝️ Island vibes: Agistri (2h) · Metopi (30min swim stop straight from the boat) · Aegina (2h) 🎶 All-day beats: Our live DJ will keep the energy flowing while you dance, mingle, and soak up the sunshine. 🥗 A feast at sea: Dive into a Mediterranean buffet lunch, perfectly paired with unlimited wine, soft drinks & freshly brewed filtered coffee. 🌞 Relax in style: Chill on the outdoor deck with sunbeds & beanbags, the ultimate spot for sun, sea, and social vibes. 🚤 Scenic bonus: Before hitting the islands, enjoy a breathtaking cruise along the Athenian Riviera. 🗓️ Details 🕘 Meeting time: 08:30 🕖 Return: 18:30–19:00 📍 Meeting point: Marina Delta, Kallithea 💸 Price Standard: €124 per person 🌟 Early bird deal: 20% OFF if you book before Thursday! 💳 Payment: On the day (cash or card accepted) ✨ A perfect day to dance, swim, explore, and connect with fellow expats & friends while discovering the islands around Athens. ⚓ Spots are limited — secure yours now and let’s make waves together! reservation link: https://docs.google.com/forms/d/e/1FAIpQLSd3Qv2FH3Tsz6qLT6G_eLssL1LRXWEnqw-kYFFyiJu-TF5udg/viewform?usp=header

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!

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!

Where innovation meets practicality. Join us in **Columbus, OH** for our **immersive event** featuring dynamic, audience-driven demonstrations showcasing the groundbreaking features of our software. We'll cover a wide range of topics, from Manufacturing and Accounting to Inventory Management, Sales/CRM, and eCommerce, as we **delve into the capabilities of Odoo 19**. Discover how it can transform your business processes and support your journey towards digital transformation! Attend for FREE -[ ](https://www.odoo.com/r/dKG)**[Register now!](https://www.odoo.com/r/QU4)** For any inquiries, feel free to reach out to us at ellee@odoo.com

Odoo Academy is a series of **one-day**, **FREE training** sessions where participants can learn directly from our **seasoned experts**. Master a specific **Odoo application** or delve into **industry-specific** functionalities. Join us in our **Columbus, OH** for hands on training in Odoo's Accounting app and take your business to the next level! Training will be given in **ENGLISH**. Lunch is **included**. Participants must bring their **OWN laptop** for the practical exercises. For any inquiries, feel free to reach out to us at ellee@odoo.com. [Register Here Now! ](https://www.odoo.com/r/8yd)**[\[](https://www.odoo.com/r/gO9)Limited Seats Available!]**

Interested? Contact Preston Moore k.preston.moore@gmail.com 614-300-5989 ———————————— Engaging in men’s work is the new way to forge friendships while being open-minded to personal growth. Many men experience healthier relationships, personally and professionally, by engaging in this work. Open Men’s Group is a container for men to share vulnerably without receiving judgment or feedback. We believe that emotionally mature, powerful, compassionate, and purpose-driven men will help heal some of society’s deepest wounds. We support the powerful brilliance of men and we are willing to look at, and take full responsibility for, the pain we are also capable of creating – and suffering. We care deeply about men, our families, communities, and the planet. Visit ManKind Project USA to discover more. https://mkpusa.org/

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