Grab your badge, gift bag, coffee and breakfast

Clash of Agents is a 15′ fast-paced opening session designed to energize the start of Open Conf 2025. Engineering leaders Lampros Pappas (Citrix) and George Nikolaropoulos (Natech Banking Solutions)—each with over 20 years of software experience and still actively hands-on—will take the stage for a live technical challenge that showcases real-time problem-solving and engineering decision-making. Attendees are encouraged to arrive early on Friday morning, before the keynote, to enjoy the full session.

We’re in the middle of another abstraction leap.
Just like compilers, cloud, and containers before it, AI-generated code started with hype, fear, and broken things—and might still end with progress.
But only if we build it right.
LLMs aren’t evil—they’re just monkeys with GPUs.
They’ll generate code with confidence, validate it with tests they wrote themselves (if any), and call it a job well done.
This talk introduces a working model for AI-assisted development that actually holds up under real-world use. It’s built on three ideas:
– The Chasm: the dangerous gap between what we meant and what we asked for.
– The Craft: the human skill to spot when AI gets it “technically right” but still wrong.
– The Chain: the Intent Integrity Chain, a structured flow of prompt → spec → test → code, where each output is validated externally—by humans or deterministic systems, never by the same model that generated it.

This isn’t a thought experiment or a product pitch. It’s a blueprint for building real software with AI, without sacrificing trust or intent.

Trust your knowledge.
Trust your tests.
Never trust a monkey.

A practical walkthrough of how Yodeck accelerated its test automation using Playwright. The session highlights our approach, key challenges, the structure of our testing framework, and the impact on product quality, delivery speed, and overall team efficiency.

PyGreece is the Greek Python community, bringing together developers, educators, data scientists and enthusiasts who use Python in diverse fields. In this session, we will explore both the technical and community aspects of Python in Greece: how Python is applied in real-world projects, how open-source contributions such as the Greek translation of the official Python Documentation empower newcomers, and how local initiatives strengthen global collaborations.

Join us for an open source discussion where we will share experiences, highlight ongoing projects, and brainstorm ways to grow the community.

foobar.i/o meetup is all about exploring the science and craft of Software Engineering and delivery in a way that is open to everyone.
Our meetings are intended to be a friendly and secure environment where colleagues, peers, and friends can share ideas, exchange perspectives, and challenge assumptions.
We encourage everyone to share their experiences, insights, and even rough ideas through brief presentations and group conversations.

Our goal is not only to learn but also to experiment, to spark curiosity, and to connect with others who share a passion for designing, building and delivering software.

Note: We will be giving away two IT books in a draw for participants.”

The Agile Coaching Clinic is designed for anyone looking to unlock better ways of working, whether you’re a developer, engineering manager, product professional, or simply curious about agility, beyond the buzzwords.
Bring an agile symptom, in the form of a question, a challenge, or a frustration.
In a short, focused 20-minute session, an experienced Agile Coach will help you make sense of what’s happening, explore fresh perspectives, and leave with some concrete next steps you can immediately apply in your team or organization.

AWS User Group Athens in Openconf. A group of people and I will give our presence to Openconf as a cloud community, share insights, swag (maybe), and ideas with the rest of the community and participants

The WordPress Greek community has been active for more than 12 years, organising regular meetups and big events called WordCamps. In 2023 it hosted WordCamp Europe, which gathered 2600 people from all over the world.

The Robot Framework community actively joins the conference to share insights, connect with automation experts, and showcase its open-source power—highlighted by a potential 10-minute live demo session.

PyLadies Athens is the brand-new local chapter of PyLadies, a global community dedicated to supporting women and gender minorities in Python and tech.

At OpenConf, we’re making our first official appearance! 🎉

Join us at our community table to:
– Learn more about our mission and upcoming events
– Meet some of our core members
– Ask questions about Python, and career journeys
– Share ideas on how we can shape an inclusive space together

It doesn’t matter if you’re just starting with Python or have years of experience, come say hi! We’d love to connect and grow this community with you!

Got a startup idea? Here’s your moment. You’ve got 10 minutes to pitch your concept, share your vision and get real, hands-on feedback from the Starttech Ventures team. Think of it as your mini-launchpad, no slides required (but passion’s a must).

Spatial data is everywhere—from maps and navigation to urban planning and mobility services. MySQL provides robust support for managing and analyzing spatial data through geometry types, spatial indexes, and a comprehensive set of spatial functions.

This talk introduces MySQL’s spatial capabilities and highlights two practical use cases:
1. Transforming Between Spatial Reference Systems: Learn how to convert geometries across coordinate systems using MySQL’s built-in SRS transformation functions. This enables use cases such as the seamless integration and visualization of diverse datasets—e.g., combining GPS traces with city planning data on a unified map despite differing coordinate systems.
2. Analyzing Spatial Trajectories: Discover how to measure similarity between movement paths using trajectory data and spatial distance functions. This can support applications like identifying common travel patterns, detecting anomalies, or optimizing routes based on historical behavior.

Whether you’re a developer, analyst, or GIS professional, this session will help you unlock the full potential of spatial data in MySQL

As we stand on the brink of the quantum computing revolution, traditional cryptographic systems face unprecedented risks. This session will explore the emerging quantum threat to data security, focusing on how quantum algorithms could compromise current encryption methods.

We will delve into post-quantum cryptography (PQC), examining the race to develop encryption schemes resistant to quantum attacks. Additionally, we’ll address the ongoing efforts in PQC standardization, and the complex challenges involved in transitioning from classical to quantum-resistant systems.

Attendees will gain valuable insights into the future of cybersecurity in a world where quantum computing reshapes the landscape.

In this presentation, Digiastar and the company’s CEO, Anastasios Coscoletos, showcase how modern AI voice agent and AI solutions can transform customer experience and internal operational efficiency.
The presentation will explore the implementation architecture, their integration with existing CRM/ERP/eShop systems, as well as application examples.
Additionally, we will discuss the challenges and the coexistence of employees within the new work environment.

FedRAMP is the ticket to entry into the US public sector, unlocking access to $50B+ in annual federal IT spending. But it’s 325+ prescriptive controls can stall engineering velocity if treated like paperwork.
We took a different path. By embedding NIST 800-53 controls into infrastructure-as-code and automating continuous monitoring through CI/CD, we advanced from SOC 2 to FedRAMP efficiently. In this talk, we’ll share how DevOps practices turned compliance into code — accelerating delivery while meeting federal requirements.

AI isn’t magic—but when you understand how to structure your input, it can function like a superpower. In this session, I’ll share how prompting, meta prompting, and even reverse meta prompting have become part of my daily life as a Product Manager working with cross-functional teams. You’ll learn how to create prompts that produce structured, relevant, and context-aware output. We’ll explore meta prompting as a way to refine your thinking before execution, and reverse prompting as a method to debug and stress-test your own inputs.
This isn’t a talk about hype—it’s about how to use AI practically, thoughtfully, and effectively in product work (and beyond). Because while AI can help us move faster, it still can’t align a team or handle trade-offs. That’s still on us.

Key Takeaways:
-What prompting, meta prompting, and reverse meta prompting actually mean (and why they matter)
-How to write AI prompts that produce useful, context-aware results
-How meta prompting can refine your problem framing before asking AI for help
-How reverse meta prompting helps you assess and improve your own thinking

How does computer know that `^\w+\d$` should match “java8” but not “jvm15”? There must be some magic that allows a computer to recognise that certain strings match the pattern, right? Yes and we, geeks, love learning how such magic works!

Join me on a highly technical journey through the internals of regex engines. First, we will analyse ancient scripts explaining the theory – finite automata and regular languages. Then we will hack through thickets of various regex flavours to arrive at the cave of regular expression engine where we’ll explore deep recesses of performance corner-cases. To add a bit of an adventure we’ll intentionally fall into a trap of exponentially slow patterns and crash a real app. Finally, we’ll read inscriptions left by the survivors of Stackoverflow and Cloudflare outages, both caused by regular expressions.

It’s a geeky talk and you’ll learn geeky stuff: how a small and neat language of regular expression is implemented and interpreted. But it’s not all in vain: you’ll be able to optimise the performance of regular expressions and prevent your app from being killed by a badly-crafted regex.

This workshop provides a comprehensive overview of the legal considerations that govern offensive cybersecurity activities, including ethical hacking, penetration testing, red teaming, and vulnerability disclosure. Participants will learn about applicable statutes (such as computer misuse and data protection laws), contractual obligations, regulatory compliance (e.g., GDPR, NIS2), and professional codes of conduct.

Through real-world case studies and judicial precedents, the session highlights risk management, liability mitigation, authorization requirements, and the distinction between lawful security assessments and illicit intrusion. Attendees will leave with practical guidelines to design and execute offensive security engagements while remaining within legal and ethical boundaries.

The Robot Framework community actively joins the conference to share insights, connect with automation experts, and showcase its open-source power—highlighted by a potential 10-minute live demo session.

Enjoy your Lunch with great Networking

Presentation of DDD and the activities of Domain Driven Design Greece meetup.

University of Athens / The project, “AI-augmented ecosystem for Earth Observation (EO) data accessibility with Extended reality User Interfaces for Service and data exploitation”, or EO4EU is a European Commission funded innovation project bringing forward the EO4EU Platform which will make access and use of EO data easier for environmental, government, and even business forecasts and operations. The EO4EU Platform, which will be available at www.eo4eu.eu, connects already existing major EO data sources such as DestinE, GEOSS, INSPIRE, Copernicus, Galileo, among others and offer several tools and services to help users find and access the data they are interested in, as well as to analyse and visualise this data. Specific attention is also given to developing user-friendly interfaces for EO4EU allowing users to intuitively use EO data freely and easily, even with the use of extended reality.

GlossAPI is an open‑source Python library and technical infrastructure to create, curate, and publish AI‑ready Greek datasets. At our Open Space stand, we’ll showcase documented datasets hosted on Hugging Face and the reproducible preprocessing workflows that produce them. Visitors will see how academics, students, and practitioners can contribute new corpora or reuse existing data in Natural Language Processing (NLP, Natural Language Processing) and Large Language Models (LLM, Large Language Models) applications. We’ll run short offline demos, share dataset cards, and provide links to repositories (Hugging Face / GitHub) and a collaboration form.

Focus: transparent pipelines, licensing clarity, and practical reusability—lowering friction for those building or evaluating Greek AI.

Goal: grow a community around open standards and rigorous documentation so Greek‑language AI becomes more accessible, ethical, and reproducible.

GFOSS (Open Technologies Alliance)

We will present PROVATO, an edge AI and IoT-powered platform for real-time livestock monitoring. The proposed framework enables farmers to track animal health and behaviour, ensuring scalable data processing and AI inference at both the edge and the cloud. This approach supports decision-making, reduces resource waste, and improves animal welfare.

Reskilling for the Future is an open initiative that connects people and professionals through learning, collaboration, and inspiration.
Its goal is to promote reskilling and the development of modern skills in technology, creativity, and sustainability.
A community that learns, evolves, and creates opportunities for everyone.

As artificial Intelligence becomes more sophisticated, deception scales faster than ever. It’s becoming more common everyday that AI tools generate realistic phishing, deepfakes and persuasive language to manipulate trust.
The growing overlap between machine intelligence and human vulnerability is a sign of the times and cybersecurity professionals need to address it sooner rather than later.

Do you want to take advantage of the full power of serverless architectures for your production workloads? Are you wondering how events can help your applications scale? Have you been trying to tune your applications for higher performance and lower cost?

This session provides architectural best practices, optimizations, and useful shortcuts that experts can use to build secure, high-scale, and high-performance serverless applications.

Open-source AI is shaping how we build, deploy, and scale systems and applications today, right into production. But with the rapid adoption of upstream AI models, datasets, and orchestration tools comes a critical question: can we trust what we’re using and how it was originally created? According to PwC survey, about 50% of surveyed company leaders in 2025 admitted they don’t trust AI to be embedded in their core operations.
Unlike focusing on securing AI systems themselves, in this talk we’ll explore often overlooked topic – how data provenance, model transparency, and AI-specific supply chain security are becoming essential for building trustworthy AI systems.
I’ll cover the importance of data provenance and how they reduce risks like data poisoning, bias, and adversarial manipulation; the rise of the AI Software Bill of Materials (AI SBOM) to document model components and inference behavior; open-source tools that bring it all to life: Sigstore, KitOps, Model and Data Cards.
I will also share updates from our work in top AI standardization organizations like OASIS, OpenSSF, and LF AI & Data to define and support AI provenance standards, automation, and trusted AI guidelines.

Microfrontends bring the modular power of microservices to the frontend. This talk explores why teams adopt them, the key benefits like team autonomy and scalability, and the real-world challenges such as complexity, integration, and UX consistency. Ideal for those considering whether microfrontends are the right architectural path for their organization.

GlossAPI is an open‑source Python library and technical infrastructure to create, curate, and publish AI‑ready Greek datasets. At our Open Space stand, we’ll showcase documented datasets hosted on Hugging Face and the reproducible preprocessing workflows that produce them. Visitors will see how academics, students, and practitioners can contribute new corpora or reuse existing data in Natural Language Processing (NLP, Natural Language Processing) and Large Language Models (LLM, Large Language Models) applications. We’ll run short offline demos, share dataset cards, and provide links to repositories (Hugging Face / GitHub) and a collaboration form.

Focus: transparent pipelines, licensing clarity, and practical reusability—lowering friction for those building or evaluating Greek AI.

Goal: grow a community around open standards and rigorous documentation so Greek‑language AI becomes more accessible, ethical, and reproducible.

How do you build a recommender system that goes beyond genres and understands how people feel?
In this talk, we’ll share the journey of building Movie Groovy, a GenAI-powered application that recommends movies based on vibes and emotional preferences. You’ll get a look into how we combined LLMs, Agents in Python, Vector DBs, and custom UX logic to create an easy and emotionally-aware experience.
Along the way, we’ll highlight the technical challenges, design decisions, and surprising insights that came from balancing user trust, AI accuracy, and creative UX. If you are interested in GenAI, recommender systems, human-centered design, or just … movies, this talk will give you actionable ideas and inspiration for your own projects.

A behind-the-scenes look at the large-scale refactoring of TalentLMS, a learning management platform with deep roots and tight constraints.

This talk covers how we tackled deeply embedded technical debt while keeping the system live and teams shipping. It walks through the architectural shifts we made, from monolith to modulith, and the cultural shifts that made those changes possible.

Alongside code, we had to refactor trust, habits, and communication. Equal parts technical and human, this is a story about moving forward without breaking what still works.

Our study highlights how public platforms, trust in open collaboration, and the rapid dissemination of software can be exploited to distribute misinformation or conduct covert operations. We explored the Node.js code on GitHub and we revealed a coordinated online deception involving fake companies. What started as an inquiry into potential malware evolved into a broader examination of how open-source ecosystems can be manipulated for geopolitical or criminal purposes.
By tracing digital footprints, analyzing behavioral patterns, and connecting disparate online identities, the investigation uncovered a network of fabricated corporate entities designed to project legitimacy and obscure malicious intent. Beyond the specific case, it raises questions about the intersection of cybersecurity, transparency, and global digital ethics. The findings emphasize the need for stronger verification practices, responsible reporting, and collective vigilance within developer and research communities to preserve the integrity of open digital spaces.

We will present PROVATO, an edge AI and IoT-powered platform for real-time livestock monitoring. The proposed framework enables farmers to track animal health and behaviour, ensuring scalable data processing and AI inference at both the edge and the cloud. This approach supports decision-making, reduces resource waste, and improves animal welfare.

We will go through a practical application of AI and machine learning for observability in Netdata, focusing on the utilization of anomaly detection for individual components. We will emphasize on ML’s role as an advisor rather than an alert mechanism, using multiple independent models to identify significant issues when different metrics indicate simultaneous anomalies. This method enhances the detection of unusual patterns, potentially predicting failures and identifying security breaches.

University of Athens / The project, “AI-augmented ecosystem for Earth Observation (EO) data accessibility with Extended reality User Interfaces for Service and data exploitation”, or EO4EU is a European Commission funded innovation project bringing forward the EO4EU Platform which will make access and use of EO data easier for environmental, government, and even business forecasts and operations. The EO4EU Platform, which will be available at www.eo4eu.eu, connects already existing major EO data sources such as DestinE, GEOSS, INSPIRE, Copernicus, Galileo, among others and offer several tools and services to help users find and access the data they are interested in, as well as to analyse and visualise this data. Specific attention is also given to developing user-friendly interfaces for EO4EU allowing users to intuitively use EO data freely and easily, even with the use of extended reality.

Back to professional life after parental leave. What mattered before and what matters after. So how you still fit and how can you now be enough in these two words, family one and professional?

Maybe there are no good answers but sure there is a discussion we should be having. Especially if we want to keep diverse talents in the workforce.

The EU’s Cyber Resilience Act (CRA) has entered into force, but the road to full compliance runs through 2027 — and a lot is happening along the way.
This session offers a fast-paced technical update on where we are now: vulnerability reporting rules, open-source guidance, and the first steps toward harmonized standards.

This highly interactive two-part presentation tackles crucial communication gaps in cybersecurity engineering. The first half analyzes the problem, defining two major communication silos:

1. The Business/User Gap:Engineers struggling to communicate value to non-technical stakeholders (Sales, Clients).
2. The Specialization Gap: Engineers from different deep technical fields (e.g., hardware vs. software security) failing to communicate effectively.

This analysis shows how poor communication hinders engineer growth and obscures business value.

The second half is a practical Interactive Workshop featuring three role-playing scenarios to bridge these gaps:
1. Client Simulation: Convincing a customer of a disruptive technical fix without jargon.
2. Sales Simulation: Persuading a sales lead to halt a launch by translating risk into financial loss/reputational damage, and professional challenges.
3. Internal Simulation:Forcing a Hardware Engineer and Software Engineer to collaborate on a complex threat and solution.

The session concludes with the audience co-creating a final list of best practices based on the role-playing insights.

Everyone wants to “chat with their data”, but not everyone realizes how much groundwork that takes. This session explores what it really means to add an AI layer on top of a business intelligence data platform and why success depends on a strong data foundation, a clear semantic layer, and effective governance. We will look at how a well-structured warehouse and defined metadata enable accurate, contextual responses while keeping information secure and properly governed. The session also highlights the importance of communicating clearly with end users, setting expectations, building trust, and helping them gain real value from AI while maintaining critical judgment.

This session dives into the exciting world of Agentic AI and demonstrates how to build sophisticated, intelligent applications using Quarkus, LangChain4j, and the Oracle Database 23ai @ Azure.

It provides a comprehensive overview that empowers developers to harness the full potential of Agentic AI within the Quarkus ecosystem.

We will delve into the powerful synergy between Quarkus-Agentic AI and LangChain4j and demonstrate how to leverage these tools to build intelligent, context-aware agents.

We will cover the core concepts, architecture, and practical applications, illustrating the steps to develop robust and scalable Agents-driven applications.

Enjoy pizza, beer and refreshments, along with great DJ music from our amazing DJs. Networking and Fun at it’s best combination!