Sessions

Chat interfaces are everywhere, but they're still stuck with text-only interactions. In this hands-on full-day workshop, you'll learn how to build real, interactive React components that live inside conversational interfaces using MCP-UI. You'll [...]

Come and learn how to build your own MCP server and connect it to an AI coding agent. I will provide starter repos in popular languages and advice on how to approach MCP [...]

Stop theorizing and start doing. This hands-on workshop takes you through the complete lifecycle of implementing a practical AI solution, from business case to deployed model. Working in small teams, you'll tackle a [...]

Stop theorizing and start doing. This hands-on workshop takes you through the complete lifecycle of implementing a practical AI solution, from business case to deployed model. Working in small teams, you'll tackle a [...]

In this keynote we are having a critical look at how the web went wrong. How we went from using common and open protocols to create a rich digital culture, to an environment [...]

Still waiting 30 minutes for your builds to finish? Still hunting down "unreproducible" bugs? It’s time to supercharge your setup. Join us as we dissect the intersection of Mobile DevOps and Artificial Intelligence. [...]

Some developers cannot write a single line of code without music. Others are convinced that absolute silence is the only way to think. This quiet disagreement shapes how we work more than we [...]

Maintaining software dependencies and updating external packages and dependencies is something that nobody really wants to do, and it is often forgotten and neglegted. We would all much rather spend our time actually [...]

Today, PHP is not a tool used only for small web applications, but is also widely adopted in the enterprise applications market. The bigger and more complex the project, the more issues we [...]

The age-old debate: to separate frontend and backend, or not? In this talk we'll briefly touch on some of the pros and cons of separating your frontend from your backend. Once that's settled [...]

Think you've seen every Laravel trick? Let's find out. In this fast-paced live-coding session, we'll review a Laravel codebase and uncover over a hundred practical tips. From smarter validation rules to hidden Eloquent [...]

There's a fundamental truth in web development that we often forget: the client is always lying. Not maliciously, necessarily. But every pixel rendered in a browser, every byte sent over the wire, every [...]

Since the early days of PHP, when the language was deliberately forgiving and relied heavily on implicit type coercion, PHP has come a long way. With support for an expressive type system, granular [...]

Generative AI has quietly (or loudly?) changed the threat model. Tools similar in spirit to ChatGPT or open-source LLM agents can fuzz APIs, reverse-engineer mobile binaries on the go, probe edge-cases in authentication [...]

"Your solution sucks!" We've all heard something like this at work. How did it make you feel? And the last time you needed to criticize a colleague's work, did you handle it as [...]

If all you have is a hammer, everything looks like a nail. PHP is the right tool for a lot of jobs in your web application, but it might not be the best [...]

Have you ever felt perplexed by CSS, struggling to understand why the browser put the element where it did, and why it didn’t just follow the clear instructions you wrote? Do you think [...]

Well designed and performant API's are key aspects of good and reliable application systems. Especially when kicking of an API system it is really hard to setup and define all boundaries that are [...]

This presentation introduces an event-driven bot system built using Symfony's Webhook and RemoteEvent components (introduced in Symfony 6.3). These components provide a standardized approach to handling webhooks—HTTP callbacks that enable real-time, push-based communication [...]

The Internet seems to be always-on, for everyone, all the time. But what if it isn't ? What if you're in a location where Internet is spotty, either as a provider of a [...]

In modern architectures, loosely coupled subsystems collaborate via events rather than giving each other direct instructions. This is referred to as event sourcing if the entire state of an application can be reconstructed [...]

We've all been there: After a lot of discussion the team can still not agree on a given solution. A majority vote makes the decision, but that leaves team members unhappy and unsatisfied. [...]

Whether you're building APIs, deploying microservices, or just curious about what happens beneath the surface of your applications, understanding networking is essential. This talk explains the core concepts of networking - from the [...]

Frontend development is defined by constant change. Frameworks, tools, patterns, opinions, and design requirements continue to evolve or reappear in new forms, forcing developers and teams to adapt while still delivering value. In [...]

API Platform 4.1 and 4.2 unveils a revamped filter system featuring a brand-new syntax, inspired by the advancements introduced with Laravel support in version 4.0. These enhancements not only make filters more intuitive, [...]

Distributed systems offer scalability and flexibility, but they also introduce new challenges: networks fail, messages get delayed, lost, or duplicated, and some operations - like sending an email - cannot easily be undone. [...]

Explore the power of advanced TypeScript features by bringing hardware to life! In this talk, we’ll bring hardware to life using TypeScript and an Arduino, transforming sensors, servos and LEDs into a playground [...]

Developers in other languages like Java, C#, or TypeScript, have been enjoying the benefits of generics for a long time. They allow us to describe precise types of values included in a collection [...]

Previously, there wasn't a PDF library that allows parsing of PDFs that was open source, MIT licensed and under active development. The PDFParser by smalot, while having been very useful over the years [...]

Every great RPG has side quests. Some people skip them, racing toward the final boss battle. But those who take the time to explore, help others, and build connections unlock skills, allies, and [...]

So you have built your fancy JSON REST API, maybe even add a fancy OpenAPI spec of your API. And then you have to add file functionality to your REST API. You will [...]

Announcing dynamic changes on the screen with screen readers can be cumbersome and it can hide a lot of sneaky errors, especially when just starting out or using frameworks like Vue. My presentation [...]

A common problem I have seen is that PHP apps grow faster than their data discipline. Most PHP engineers think about models, migrations, and relationships — but not about analytics. Yet as your [...]

When I announced to my friends in Tech that I was joining a WordPress company, many told me I was giving up on quality, developer experience, and state-of-the-art practices. Somehow, the WordPress ecosystem [...]

Your app works great on your laptop, in the dev environment. Then production hits 10x expected traffic during a marketing campaign and everything falls apart. Or maybe not, instead six months of data [...]

This talk shows how innocent rounding logic can slowly destroy financial integrity. We walk through real examples where PHP gets money wrong and how to engineer systems that never do.

By Johan Janssens

Ever felt like your Git history is the scene of a gruesome crime? Have you ever seen commits so messy they should be classified as felonies? In this darkly humorous session, we’ll explore [...]

Object oriented programming is no silver bullet, like any other paradigm. So, how to pick the right one? You simply don't. Modern programming languages are slowly adopting multiple paradigms, and for good reasons. [...]

We all have opinions about how PHP should be written. But what does the data say about how it actually is? In this talk, we dive into a large-scale analysis of real-world PHP [...]

JavaScript has a reputation: unpredictable, quirky, sometimes infuriating - and yet it powers the modern web like nothing else. But here’s the twist: most of the “weirdness” is intentional. In this session, we’ll [...]

When multiple teams across different domains and languages build APIs, it’s only a matter of time before standards diverge—different naming conventions, different ways of working, and different approaches to security. Everyone has the [...]

Laravel and Symfony give us a huge amount of flexibility through their service container and drivers system. Sometimes, PHP itself becomes the bottleneck. In this talk, we’ll go one layer deeper: writing a [...]

Rector is a tool best known for upgrading and refactoring codebases, but its potential goes far beyond that. What if you could make Rector a key part of your everyday development workflow? In [...]

🎤 The UNCON is back! Fancy showing off your knowledge, a cool project, or just a fun idea? The UNCON lets you take the stage. No pre-registration needed. Just sign up on the [...]

C2PA (Coalition for Content Provenance and Authenticity) helps combat deepfakes by providing a trusted standard for content provenance. It allows creators and platforms to cryptographically sign media at the point of creation and [...]

Introducing WhatsApp as our first channel in a new messaging domain turned out to be less of a technical project and more of an exercise in product strategy, diplomacy, and learning just how [...]

As any programming language, PHP has a type system. Its type system has evolved over the years to become more complete and robust. PHP also has a notion of a subtype following Liskov's [...]

This talk explores how users interact with websites and how developers can make those interactions accessible to everyone. Using practical examples, such as converting an inaccessible hover menu or carousel into accessible versions, [...]

You’ve read the release notes. You’ve seen the blog posts. But how many of PHP’s modern features have actually made it into your day-to-day code? Sure, you’ve heard about enums. You might’ve even [...]

For years, PHP has been described, and dismissed, as a simple scripting language for the web. Request in, request out. Slow. Blocking. Old. That story is no longer true. Over the past few [...]

PHP Installer for Extensions (PIE) is an innovative tool I am writing for the PHP Foundation to modernise how PHP extensions are installed and managed. For decades, PECL has been the go-to mechanism, [...]

SMS was once the trusted backbone of digital security, powering two-factor authentication and one-time passwords. But over time, the same channel became a favorite tool for fraud. Spam texts, spoofed calls, and large-scale [...]

This is a practical, hands-on workshop. We start from a tiny, messy codebase and improve it step by step. We’ll replace `any` with real boundaries, use `unknown` + simple type guards, model flows [...]

In this talk, the speaker will introduce a modern approach to software design — one that strikes the right balance between automation and simplicity. The session will explore real-life scenarios, uncover common issues, [...]

Modular monolith gained popularity as the hype around microservices slowly went down. The community realized that the most important part of modularization happens during the discovery and design phase, and that an implementation [...]

Server-side rendering (SSR) is back in the spotlight-and React is evolving fast. In this workshop, we’ll go deep into the mechanics, performance trade-offs, and modern techniques of SSR with React.js. You'll start by [...]

This half-day workshop is about learning to work with Claude Code. You will not be learning magicly pulling miracles out of a mysterious black box... You will discover how to use it as [...]

Modular monolith gained popularity as the hype around microservices slowly went down. The community realized that the most important part of modularization happens during the discovery and design phase, and that an implementation [...]

Modern web applications commonly coordinate work across multiple services. But when networks fail, messages get duplicated, or services crash mid-workflow, simple approaches can result in inconsistent data and duplicate operations. So, how to [...]

In the times of microservices, it becomes clear how important Domain-Driven Design (DDD) still is. Only with strategic design (i.e. DDD on a large scale) and the division of the domain into bounded [...]

Modern web applications commonly coordinate work across multiple services. But when networks fail, messages get duplicated, or services crash mid-workflow, simple approaches can result in inconsistent data and duplicate operations. So, how to [...]

In the times of microservices, it becomes clear how important Domain-Driven Design (DDD) still is. Only with strategic design (i.e. DDD on a large scale) and the division of the domain into bounded [...]

User experience is critical, so why wait for our users to encounter issues? You might have monitoring, but monitoring depends on user interactions. So, if you want to see issues before your users [...]

Most frontend developers excel at implementing beautiful interfaces, but struggle with the "why" behind design decisions. This focused workshop gives you essential UX fundamentals that directly impact your development work - no coding [...]

User experience is critical, so why wait for our users to encounter issues? You might have monitoring, but monitoring depends on user interactions. So, if you want to see issues before your users [...]

Most frontend developers excel at implementing beautiful interfaces, but struggle with the "why" behind design decisions. This focused workshop gives you essential UX fundamentals that directly impact your development work - no coding [...]

In this talk, we'll dive into the exciting world of Gemma, a groundbreaking family of open AI models by Google. We'll explore how you can leverage Gemma's capabilities to build innovative Mobile and [...]

The AI era is here, and it's time to master the art of integrating it into your Android, iOS, and Web applications. In this workshop, we’ll explore all possible ways to connect AI [...]

We're in a world where the lines are blurred between human and machine intelligence, one where we need to build a harmonious relationship through experience. In his talk we'll explore how Humans and [...]

We've all heard the hype. Machine Learning is cool! Machine Learning is Rad! It'll change the world! End Poverty! Get George R R Martin to finally finish Game of Thrones! What actually is [...]

NOTE: This is the same talk as in room 2, live streamed from that room, in case too many people choose this session. We're in a world where the lines are blurred between [...]

In software projects, it's important to write down why we make certain big decisions about how the software is built. These written records are called Architecture Decision Records (ADRs). They help us remember [...]

Is TypeScript the hero JavaScript has been waiting for? While some love its type-safe assurances, others shy away from its complexity. But what if you could navigate the spectrum of TypeScript's capabilities with [...]

One of the most important building blocks in any JavaScript runtime is the eventloop which enables developers to write performant code, even single-threaded. But many developers do not look into how it works [...]

Observability is the ability to measure a system's current state. Backend engineers are becoming more familiar with the three pillars of observability and technologies such as OpenTelemetry that can be used to instrument [...]

After the journey through Fronteroth, lies the portal to the Backend. There's a whole new set of concepts to master: server-side logic, databases, APIs, and more. And just like the frontend, the backend [...]

Ever heard of AI by design? This session will explore the critical decision-making process behind when AI is the perfect tool to enhance your operations and when it might not be the best [...]

In this talk Bert showcases his parliamentary monitoring system https://opentk.nl to discuss the tradeoffs between running on a microstack, of a few cheap software components, and taking seven-league boots using cloud services to [...]

NOTE: This is the same talk as in room 2, live streamed from that room, in case too many people choose this session. In this talk Bert showcases his parliamentary monitoring system https://opentk.nl [...]

Dive into keyboard accessibility and focus management - skills for creating inclusive web experiences. Learn how to ensure your interactive elements are accessible to everyone, whether they use a mouse or not. We'll [...]

What happens if all website information is contained in public LLM solutions? You will get the best UX design ever made in seconds! Public LLM's like DALL·E and Midjourney contain this information needed [...]

ING is a leading European bank, with over 60,000 employees serving more than 38 million customers, corporate clients, and financial institutions across more than 40 countries. In this session, I will present how [...]

Is CSS a programming language? And if so, how do you program in it? In this session you will learn how to create some solid engineered systems in CSS. We will learn how [...]

What can tech teams learn from a theme park? More than you might think. Disney is known for crafting magical experiences: not just in their parks, but in the way they approach design, [...]

Serverless development might sound like magic, or maybe even like something straight out of The Matrix, but trust me, it's not the kind of tech that will leave you tangled in complexity. In [...]

What makes some websites instantly feel 'right' while others frustrate us? What makes interfaces feel truly intuitive? In this session, we'll explore three fundamental UX design principles (Information Architecture, Consistency, and Clarity) and [...]

Gen AI is known to sometimes produce inaccurate and unpredictable responses, which can be catastrophic for any developer hoping to build a consistent experience for their end users. In this talk, we'll explore [...]

I’m sharing best practices on building a truly cross-platform / universal TypeScript library in 2025. TypeScript compiles to JavaScript which runs everywhere, so that should be easy, right? For a simple library, sure, [...]

Discover what Memory Leaks are in practice. We'll use MemLab and Chrome DevTools to debug leakage in our sample application, and it'll no longer be a black box for Developers attending the session! [...]

Did you know you can use the Chrome DevTools to test whether your website is build in an accessible way? If not, let's explore together. In this session, we will explore how we [...]

In this workshop, you will delve into Vanilla JavaScript and basic DOM manipulation techniques, focusing on developers who primarily use libraries such as React, Angular, or Vue. Maximiliano Firtman will guide you through [...]

Learn how Nielsen's timeless 10 usability heuristics can revolutionize your web interfaces. In this full-day hands-on workshop, we'll dive deep into these fundamental principles that still form the backbone of every usability evaluation. [...]

Curious about how Netherlands biggest weather platform manages to predict the weather with such accuracy while serving millions of users every day? Join us for an insightful dive into the technology powering Buienradar’s [...]

Dive into the cutting-edge world of VR-first web development! As VR headsets revolutionize web browsing, we'll challenge the assumption that VR websites must be 3D and spatial. Instead, we'll explore how to adapt [...]

Learn how Nielsen's timeless 10 usability heuristics can revolutionize your web interfaces. In this full-day hands-on workshop, we'll dive deep into these fundamental principles that still form the backbone of every usability evaluation. [...]

Everywhere we look we see examples of leveraging AI technologies not just while building software, but in our web applications too. While developers want to embrace new shiny technologies, tech leaders raise concerns [...]

Everywhere we look we see examples of leveraging AI technologies not just while building software, but in our web applications too. While developers want to embrace new shiny technologies, tech leaders raise concerns [...]

The road to becoming a modern Frontend developer is not easy. There's a lot to learn: the basics, the conventions, and the syntax. On top of that, it's a world where everything changes [...]