ROCKSTARS VALLEY 2026
ENGINEERING UNDER PRESSURE.
How do you keep building when the pressure keeps rising?
Quickly go to
ROCKSTARS VALLEY 2026 · 6 OCTOBER · JOHAN CRUIJFF ARENA
VIEW THE FULL DAY.
View the programme in chronological order. Click a talk or speaker to view the full session description.
Reception
MAIN STAGE
Plenary opening
Wietse Hage
Technology philosopher
Wietse Hage
Technology philosopher
From the perspective of technology philosophy, Wietse examines the development of technology and AI and the choices behind it. An in-depth look at technology, human behaviour and the changing nature of engineering.
Software developer, technology philosopher and podcast host
Inge Bryan
Cybersecurity, intelligence and investigation
Inge Bryan
Cybersecurity, intelligence and investigation
Drawing on two decades of experience in intelligence, investigation and cybersecurity, Inge examines digital security, resilience and decision-making where technology and societal pressure converge.
Cybersecurity, intelligence and investigation expert
BREAKOUT ROUND 1
CHOOSE YOUR SESSION
Presenting under pressure: from stress to performance
Wouter Stoltz · Team Rockstars IT · Talent Manager & Trainer
Presenting under pressure: from stress to performance
Wouter Stoltz · Team Rockstars IT · Talent Manager & Trainer
Deadlines, incidents, complex systems and constant context switching. For many developers, working under pressure is a daily reality. At the same time, we live in a world where information, notifications and expectations constantly compete for our attention. In one word: stimulus overload. The question is therefore not how to avoid pressure, but how to manage it effectively and sustainably.
In this interactive workshop, we explore what happens when tension and stimuli build up and how you can continue to perform precisely when they do.
Talent Manager and former elite athlete Wouter Stoltz shares his personal story of performing at the highest level, dealing with setbacks and reinventing himself after a serious injury ended his sporting career. The lessons from elite sport prove surprisingly applicable to the daily reality of software development: maintaining focus under pressure, recovering after exertion and managing tension effectively.
We also examine the science behind stress, attention and performance. What happens in your brain when pressure rises? Why can thinking become more difficult precisely when you need to be sharp? And how does an overload of stimuli affect our concentration, energy and decision-making?
Inspired by insights from neuroscience and the growing focus on reducing stimuli and recovery, participants discover why sustainable performance is not only about working harder, but also about managing attention and energy more intelligently.
The workshop combines personal stories, scientific insights and immediately applicable techniques. Participants learn to recognise their own stress signals, gain practical tools for regaining focus at peak moments and develop a personal plan for high-pressure situations.
This is not a session about reducing workload. It addresses a far more relevant question: how do you ensure that pressure, complexity and stimuli work for you rather than against you?
Team Rockstars IT · Talent Manager & Trainer
AI Circle - invitees only
Simone van Erp · CPO · Team Rockstars IT
AI Circle - invitees only
Simone van Erp · CPO · Team Rockstars IT
The AI Circle is an invite-only breakout for managers with an AI focus. If you are not yet part of the community but would like to find out whether you qualify to participate, please contact events@teamrockstars.nl
CPO · Team Rockstars IT
The urgency of sovereignty and portability for your data platform
Ruud Cools & Olav van Rabenswaaij
The urgency of sovereignty and portability for your data platform
Ruud Cools & Olav van Rabenswaaij
What happens to your data platform if a foreign government demands access to your storage? How does your hyperscaler's unpredictable pricing strategy affect your quarterly budget? What happens to your enterprise architecture if a critical vendor technology is no longer supported? What are the legal and GDPR risks when your data passes through third parties or foreign subprocessors? In this session, we explore the urgency of sovereignty and portability for your data platform. Based on your organisation's needs and requirements, we outline the technical consequences. After all, complete sovereignty and portability also have disadvantages…
Using the Data Platform Navigator, a framework developed by Team Rockstars IT, we show architects, engineers and programme managers how to find the right balance between cloud convenience and absolute control over their own data, step by step.
What will you take away from this session? Clear questions and a practical framework for determining your own balance between cloud convenience and sovereignty.
Different minds, one high-performing team
Koen Sterken & Marc Heusdens
Different minds, one high-performing team
Koen Sterken & Marc Heusdens
High performance does not come from making everyone work in the same way. It comes from understanding how different people think, communicate, focus, make decisions and handle pressure. In a neurodiverse organisation, this is even more important. The challenge is not to erase the differences, but to turn them into a strength.
In this session, we examine how to build a high-performing team in which different minds can bring out the best in one another. Drawing on practical experience with teams in complex environments, we share what helps and what proves counterproductive when people have different needs around structure, communication, autonomy, focus, feedback and energy.
We cover psychological safety, clear expectations, working agreements, decision-making, a sustainable pace, conflict, ownership and trust. The goal is not to create a perfect team in which everyone works in the same way. The goal is a team whose members understand one another better, make use of each other's strengths and deliver meaningful results without burning out.
AI & impact on engineering
Wietse Hage · Technology philosopher
AI & impact on engineering
Wietse Hage · Technology philosopher
In this interactive breakout, technology philosopher and AI analyst Wietse Hage explores how AI systems are evolving and the opportunities and challenges this creates for the future of work. He covers the most important developments, limitations and trade-offs, as well as the impact this technology has on how we build and use software. As co-host of the AI Report podcast and newsletter with Alexander Klöpping, Wietse follows developments closely and translates them into clear insights.
Following a brief introduction by Wietse, this session becomes an open conversation with engineers. Guided by questions from the group, we explore the possibilities and limitations of AI in practice: where are the boundaries of current models, how much control do you still have as an engineer, and how do you deal with uncertainty, bias and emergent behaviour?
We also examine the impact on the profession. As more code is generated partly or entirely by AI, the engineer's role increasingly shifts from builder to orchestrator. How do you direct AI systems effectively, safeguard quality and make considered technical and ethical decisions? What does this shift mean for knowledge work, and how do we prepare for a future in which collaborating with AI becomes a natural part of the job?
An in-depth session for engineers who want to understand how their role is changing in an era in which AI is playing an increasingly prominent part in software development and knowledge work.
Technology philosopher
Cloud sovereignty in practice
Rutger Keur & Ruurd Dam · Director Core Solutions & Managing Director · VGZ & Team Rockstars Cloud
Cloud sovereignty in practice
Rutger Keur & Ruurd Dam · Director Core Solutions & Managing Director · VGZ & Team Rockstars Cloud
This session demonstrates why cloud sovereignty is no longer a theoretical issue for organisations such as VGZ, but a strategic necessity, and which risks arise when you fail to act. Drawing on the approach, initiatives and results of VGZ and Team Rockstars IT, participants gain practical insights into achieving control over cloud sovereignty through European cloud choices, portability and a realistic transition strategy.
Agent Boss: from AI tools to real business transformation
Joris Haverkort · CTO · Microsoft Netherlands
Agent Boss: from AI tools to real business transformation
Joris Haverkort · CTO · Microsoft Netherlands
AI is rapidly becoming the new term for digital transformation. But the real question is no longer whether organisations should do something with AI; it is how to deploy AI at scale and connect it to measurable business value.
In this session, I take participants from using isolated AI tools to thinking like an Agent Boss: someone who not only uses AI agents, but also directs and organises them and connects them to real business outcomes.
Topics include:
- why AI is about more than productivity or automation;
- how to move from experiments to AI at scale;
- how to connect AI to strategic value, customer impact and new ways of working;
- what this means for leadership, teams and the role of technology professionals.
CTO · Microsoft Netherlands
How do you build a strong community culture in an age of individualisation?
Sjoerd Kuijten · Team Rockstars IT & Bart Sanders · Alliander
How do you build a strong community culture in an age of individualisation?
Sjoerd Kuijten · Team Rockstars IT & Bart Sanders · Alliander
Many organisations invest in talent development, knowledge sharing and collaboration, while also finding that engagement can no longer be taken for granted. Hybrid working, individualisation and a growing need for autonomy make it more difficult to sustain connection, ownership and knowledge exchange.
Yet these factors are crucial to the success of teams. When professionals continuously learn from one another, actively share knowledge and feel connected to their colleagues and the organisation, teams become stronger, performance improves and service delivery becomes more consistent.
Community Manager Sjoerd Kuijten (Team Rockstars IT) discusses this with Chapter Lead Software Development Bart Sanders (Alliander). Do not expect a theoretical presentation, but an open conversation about how Bart Sanders has successfully put this into practice at Alliander over the past few years. Join this roundtable session and share your thoughts and questions during the breakout.
Sjoerd Kuijten
Community Manager · Team Rockstars IT
Bart Sanders
Chapter Lead Software Development · Alliander
Ajax Stadium Tour
Ajax
Ajax Stadium Tour
Ajax
Choose this breakout for a guided tour of the Johan Cruiff Arena. At the start of the tour, please report to the meeting point at the event venue near the information desk.
Ajax
Lunch
BREAKOUT ROUND 2
CHOOSE YOUR SESSION
Building safe and sovereign frontier AI
Franck Pagny · Product Manager for AI Inference · Scaleway
Building safe and sovereign frontier AI
Franck Pagny · Product Manager for AI Inference · Scaleway
Learn how to build frontier Agents leveraging the latest open-weight frontier models. Know and identify the right patterns to circumvent LLM shortcomings and fight the right balance between accuracy, costs, safety and data privacy.
Product Manager for AI Inference · Scaleway
Our Artificial Future
Joris Krijger · Technology philosopher and AI ethicist
Our Artificial Future
Joris Krijger · Technology philosopher and AI ethicist
It is becoming increasingly clear that AI is the defining technological revolution of this century. It is fundamentally changing how we work, learn and live together. However much we might wish otherwise, we cannot address the societal questions that follow using existing logic or familiar solutions. As legislation, frameworks and institutions fall short, we must build a new ethical infrastructure to turn all this technological change into genuine progress.
Against this backdrop, we reconsider the role and value of human beings. Behind all the prominent discussions about jobs, data centres and Big Tech lies a much deeper shift in the role AI plays in our lives. A shift in which we are gradually handing over not only our work, but also our social and personal lives to these human-like machines. The human story as we know it has reached a turning point. What will our next chapter look like?
Technology philosopher and AI ethicist
Build faster, trust less: Quality Engineering in the age of AI
Jasper Loos · Principal Consultant · Team Rockstars IT
Build faster, trust less: Quality Engineering in the age of AI
Jasper Loos · Principal Consultant · Team Rockstars IT
A developer opens their laptop in the morning, gives an AI agent a prompt and has a working feature before lunch. The code compiles, the generated tests pass and the pipeline is green. Yet nobody dares to release it.
With Agentic AI, we have a tool that generates code at a speed no developer can match. But development speed was never the real problem. The bottlenecks have been the same for years: unclear requirements, unstable test environments, insufficiently representative test data, slow feedback loops and architectures that treat testability as an afterthought. AI solves none of these issues. It only makes their consequences arrive sooner and hit harder.
The obvious response is to have AI generate the tests as well. But when both the implementation and the tests are generated from the same prompt, you are no longer validating software. You are validating an AI's interpretation. A passing test only proves that the code does what the test expects, not what the user actually needs. This dilemma is central to the session: when can you trust AI-generated tests, and when do they merely create an illusion of quality?
Drawing on practical experience in large enterprise environments, I discuss the choices teams must make before AI tooling can genuinely add value. What requirements must your test environments and test data meet? When is mocking justified, and when does it hide a structural problem? And how do you convince an organisation focused primarily on building new features that quality thinking starts when discussing a requirement, not after the PR has been merged?
This is not an argument against AI. It is an argument for Quality Engineering as a discipline, rather than QA as a phase at the end of the software delivery process.
Principal Consultant · Team Rockstars IT
“Probably a false positive…”
Benjamin Abbenhues · Senior Cyber Defense Specialist · Team Rockstars Security
“Probably a false positive…”
Benjamin Abbenhues · Senior Cyber Defense Specialist · Team Rockstars Security
Chaos in the SOC: technology, communication and responsibility under pressure
A suspicious login from abroad. Shortly afterwards, a process execution alert. An L1 analyst wondering whether it is serious enough to escalate. An L2 immediately asking for more logs. A client who mainly wants to know whether they will still be able to work tomorrow. And somewhere in a Teams call, fifteen people are now silently staring at one another.
Welcome to the SOC.
In this session, I take the audience through a recognisable, practice-oriented account of how security teams operate under pressure. No theoretical “best practices”, but a realistic look at what happens from the moment an alert arrives until technology, communication and responsibilities begin to overlap.
Using a fictional case grounded firmly in practice, we follow an incident through the different layers of the SOC: from L1 to L2 and potentially on to L3 and management. Along the way, technical analysis, human error, stress, tunnel vision, escalations and communication challenges converge. These moments reveal that security is not only about tooling or detections, but above all about collaboration, clear responsibilities and decision-making under pressure.
The session includes recognisable situations for anyone working in security operations, incident response or technical operations organisations. In an accessible, narrative style, I show how small signals can develop into major incidents, how teams respond as pressure rises and why tabletop exercises are essential preparation.
Senior Cyber Defense Specialist · Team Rockstars Security
Sponsorship Ajax x Team Rockstars IT
Robin Hogendorf & Kimmy Gommers · AFC Ajax & Team Rockstars IT
Sponsorship Ajax x Team Rockstars IT
Robin Hogendorf & Kimmy Gommers · AFC Ajax & Team Rockstars IT
What happens when an IT company decides to put its name on the Ajax shirt?
In this session, Robin Hogendorf and Kimmy Gommers take you behind the scenes of the partnership between Team Rockstars IT and AFC Ajax. No polished sponsorship pitch, but an honest account of making bold choices.
How do you ensure that such a partnership becomes more than a logo beside the pitch? How do you build visibility and trust in an extremely competitive market? And how do you translate that into concrete impact on recruitment, business and thought leadership?
With a transparent, data-driven look at strategy, activations and results, we share the journey we have taken with Ajax over the past two years. From skybox to hackathons, from brand awareness to a multimillion-euro business. How do you continue to make decisions under pressure that are not only exciting, but genuinely strengthen your brand?
Expect an open account of having the courage to choose, continuing to build and sometimes simply taking the leap without guarantees.
AFC Ajax
Team Rockstars IT
From strategy to Network Automation
Oscar van der Leij & Aidan Langelaan · Team Rockstars IT
From strategy to Network Automation
Oscar van der Leij & Aidan Langelaan · Team Rockstars IT
How VodafoneZiggo makes a complex network transformation scalable
How do you translate a strategic ambition into automation that actually works within the network?
VodafoneZiggo faces the challenge of enabling ever-higher internet speeds on its existing coaxial-fibre network. To achieve this, approximately 15,000 Remote PHY Devices (RPDs) must be rolled out over the coming years. Manual provisioning is simply not fast, scalable or reliable enough.
In this talk, Solution Architect Oscar van der Leij and Product Owner Aidan Langelaan share their joint journey from strategy to a working Network Automation platform. Over the course of more than eighteen months, they worked with IT teams, network specialists and engineers to build a solution that largely automates the configuration and provisioning of an RPD after installation.
But automation proved to be about far more than technology alone. Requirements only became truly clear during testing with engineers, specialist knowledge was scarce and dependencies such as network connectivity regularly affected progress. At the same time, existing processes had to be simplified and different domains had to learn to work closely together.
A practical and transparent account of brownfield integration, orchestration, iterative development and the lessons learned along the way, and above all why successful automation only emerges when technology, processes and people come together.
Team Rockstars IT
Team Rockstars IT
Voice UI’s, AI, and the future of usability (EN)
Ramona Domen · Front-End Developer · Team Rockstars IT
Voice UI’s, AI, and the future of usability (EN)
Ramona Domen · Front-End Developer · Team Rockstars IT
This talk will be in English, limited space (10p)
When interacting with technology, most of it is done via a visual medium, yet for us humans, speech is the more native form of communication. With the AI evolution picking up speed, should we abandon our “old” ways of developing and look into designing applications and the way we interact with them from scratch?
What would a world look like when every user has their own UI customized to their needs and preferences, and what would that mean for our work? Will we still have frontend developers? How will it change the way we create API’s and handle information provision when the UX and UI are always different?
Join me in this interactive thought experiment and discover what our work might look like in the future, now that we have AI not only as a coding companion, but also as a user interface.
Front-End Developer · Team Rockstars IT
Ajax Stadium Tour
Ajax
Ajax Stadium Tour
Ajax
Choose this breakout for a guided tour of the Johan Cruiff Arena. At the start of the tour, please report to the meeting point at the event venue near the information desk.
Ajax
How happy are you at work, really?
Rockademy
How happy are you at work, really?
Rockademy
Join us at the bar for an hour and discover how much influence you have over your own happiness at work. This interactive Happy Hour session gives you practical insights and tools to gain more energy, enjoyment and impact from your work.
We show why happiness at work and performance go hand in hand, how to stay in control of your work when things get tough and which small actions can make an immediate difference for both you and your colleagues.
You will leave with a personal workplace happiness check, practical tools for tomorrow and, of course, a surprising dose of Rockstars confetti (be there to find out ;)).
Rockademy
Break
BREAKOUT ROUND 3
CHOOSE YOUR SESSION
Real developers don’t use copilot” – How KPN is tackling AI adoption
Interactive KPN Panel · KPN
Real developers don’t use copilot” – How KPN is tackling AI adoption
Interactive KPN Panel · KPN
In this interactive panel from KPN Digital Experience, you will hear different perspectives on how we encouraged developers, including the sceptics, to explore AI tools and learn how to use them. Rather than making AI use mandatory, we sparked curiosity by creating room to experiment, learn out loud and discover firsthand what actually works within a real codebase.
We share our lessons, practical experiences and an honest view of what truly made a difference and what did not. Team Rockstars IT joins the conversation, allowing us to share experiences and insights from both KPN and Team Rockstars.
Ask your questions, gain new insights and be inspired.
Forty-five minutes of insights, inspiration and honest conversations about turning scepticism into curiosity.
Interactive KPN Panel
KPN
Open Standards, Open Choices
Sietse Bruinsma & Brendan Kamp · van de Bron
Open Standards, Open Choices
Sietse Bruinsma & Brendan Kamp · van de Bron
Europe is not merely replacing gas turbines with wind turbines; it is building an entirely new digital backbone for how energy is generated, balanced, traded and billed. Every choice made along the way, from cloud provider to data format, quietly determines how much control we retain.
In this session, we first zoom out to examine the forces radically changing European energy policy and market structures. We draw a parallel between decades of dependence on oil and gas and the new dependency risk hidden in cloud contracts and relationships with AI vendors. We then zoom back in on what this means in practice for the platforms and security approaches you manage today: how to design for an exit using open table formats such as Apache Iceberg, portable compute on Kubernetes and open protocols instead of closed APIs. We also discuss why resilience and openness must be explicit architectural requirements.
A session for engineers and technology leaders who want to build quickly without inadvertently surrendering their future flexibility.
van de Bron
van de Bron
Agentic Purpleteaming (EN)
Christoph Martens · Security Engineer · Team Rockstars Security
Agentic Purpleteaming (EN)
Christoph Martens · Security Engineer · Team Rockstars Security
This talk will be held in English. Limited space (10p)
This talk introduces an agentic purple-teaming environment: a multi-agent IDE designed for secure, reproducible offensive security research. The platform combines coordinated AI agents with strong sandboxing, execution isolation, and deterministic replay to enable safe experimentation, collaborative pentesting workflows, and auditable attack simulation.
The session explores how agentic systems change security tooling, how reproducibility and containment become critical when autonomous agents interact with targets and tools, and what this means for the future of AI-assisted cybersecurity. Attendees will see practical lessons and potential pitfalls from building an environment where AI agents can coordinate reconnaissance, exploitation, analysis, and reporting while remaining observable, constrained, and safe to evaluate.
Security Engineer · Team Rockstars Security
Not sovereign, but less dependent (EN)
Antoine Tielbeke · Team Rockstars Cloud
Not sovereign, but less dependent (EN)
Antoine Tielbeke · Team Rockstars Cloud
This talk will be in English
The moment your organization wants to become less dependent on American tech, the bar suddenly looks impossibly high. GitHub, Cloudflare, npm, your base images: there is always another thread running to the US. And because we can't do it perfectly, we end up doing nothing. That is the Purity Trap.
Antoine lowers that bar. No large organization is switching over completely any time soon, and it doesn't have to. Not every team can move to a European cloud today, but every team can become less dependent today.
With lessons from his own work, from the Dutch national COVID platform to Volt Europa and Enexis, he shows how to take those first steps without blowing up your roadmap. The approach in outline: know your crown jewels, close the tap, and keep the lights on. You'll walk out with a concrete list you can start on tomorrow. And with the realization that "not perfect" still counts.
Team Rockstars Cloud
The Agentic Engineer: Making Implicit Engineering Explicit
Roel van Bergen · Solution Architect · Team Rockstars IT
The Agentic Engineer: Making Implicit Engineering Explicit
Roel van Bergen · Solution Architect · Team Rockstars IT
AI agents can write code, invoke tools and move through a codebase at incredible speed. But speed alone does not produce reliable software. In real software development, generated code is not yet delivered work. A change only becomes valuable once it has passed through validation, review, acceptance and delivery.
This session starts with a simple observation: onboarding a new developer into a serious software project takes time. That developer must build domain knowledge, understand the architecture, learn the testing strategy, follow team conventions, know the security rules and understand how work moves from idea to production. Why, then, do we expect an AI agent to perform the same work reliably based on a single vague prompt?
The problem is not only that models hallucinate. The larger problem is that much of engineering is implicit. Intent lives in conversations. Rules live in people's heads. Validation lives in habits. Context is scattered across tickets, documentation, tests, API contracts, architecture decisions and delivery pipelines. Agents make those weaknesses painfully visible.
In this talk, we explore the Engineering Triad as a practical model for agentic development:
- Prompt Engineering makes intent explicit.
- Context Engineering makes knowledge explicit.
- Harness Engineering makes execution explicit.
Using a concrete password-reset example, we show how a simple request such as "add password reset" actually contains many hidden engineering decisions: security rules, token policies, API contracts, email infrastructure, validation, logging, test scenarios and human acceptance. We translate that vague request into explicit artefacts such as a SPEC.md, BDD-style scenarios, AGENTS.md rules, scoped custom agents, reusable skills and validation gates.
The key message: agentic development does not replace engineering discipline. It makes engineering discipline even more important. A good environment for agents is also a good environment for developers.
Front-End Developer · Team Rockstars IT
From AI hype to measurable value
Koen van Gilst · Principal Engineer · Rabobank
From AI hype to measurable value
Koen van Gilst · Principal Engineer · Rabobank
The budget for your AI use case has been secured, the business case has been approved and the initial results are promising. But then comes the most difficult question: how do you actually determine whether an AI solution is successful?
In this session, I show how we approach this at Rabobank. We define what “success” means early on and capture it in evaluation suites (evals). This not only makes the value of AI solutions measurable, but also helps us build an organisation-wide evaluation strategy that gives business, risk and compliance teams insight into performance and risks.
Using practical examples from the FinTech world, I show how to create evals, use them to compare models objectively and deploy them to continuously monitor the quality of AI solutions. Expect an interactive session with live demos, real-world examples and room to exchange experiences.
Principal Engineer · Rabobank
TED talks Brankele Frank & Edwin van der Sar
Brankele Frank & Edwin van der Sar
TED talks Brankele Frank & Edwin van der Sar
Brankele Frank & Edwin van der Sar
This breakout session features two consecutive TED Talks. Registering for this session gives you access to both talks.
This session brings together two distinctive perspectives on a highly relevant theme: performing under pressure. In a TED-style setting, neurobiologist Brankele Frank and former elite goalkeeper and executive Edwin van der Sar explore the impact of stress on both the brain and daily functioning. Drawing on neurobiology, Brankele explains how our brains respond to pressure, what prolonged stress does to us and why recovery is at least as important as performance.
Edwin van der Sar then discusses his own experiences of performing at the highest level. How do you handle the expectations of millions of supporters, the pressure of decisive matches and the responsibility of leadership? Drawing on his career as an international player, his time at leading clubs such as Ajax and Manchester United and his years as Ajax's CEO, he shares personal lessons about focus, resilience and making decisions under intense pressure.
Together, Brankele and Edwin show that successful performance is not only about knowledge, talent or technical skills, but also about mental strength, self-awareness and the ability to keep making the right decisions under pressure.
What if humans aren't the part that needs fixing?
Menno Olgers
What if humans aren't the part that needs fixing?
Menno Olgers
For generations, we’ve designed organizations around efficiency, processes and technology, and then taught humans how to fit inside them. Now AI is accelerating that logic beyond anything we’ve seen before. Faster decisions. Faster output. Faster change. And once again, the message to humans is simple: adapt.
But what if we’re optimizing the wrong side of the equation?
We already know that humans perform at their best when the right conditions exist around them. Culture, trust, purpose, autonomy and the freedom to think differently are not soft extras. They shape what becomes possible.
AI gives us an extraordinary opportunity. Not simply to reinvent what humans do, but to rethink the environments in which humans do it.
We keep asking what humans must become to survive the future of work. Maybe the future of work should start by asking what it means to be human.
Menno Olgers
Ajax Stadium Tour
Ajax
Ajax Stadium Tour
Ajax
Choose this breakout for a guided tour of the Johan Cruiff Arena. At the start of the tour, please report to the meeting point at the event venue near the information desk.
Ajax
Break
Plenary closing & Awards Show
Networking reception
ROCKSTARS VALLEY 2026
MEET THE SPEAKERS.
Engineers, technology leaders, philosophers and experts from inside and outside Team Rockstars IT. Open a speaker to see their background and session at Rockstars Valley 2026.
KEYNOTE
TALK · 10:30
Wietse Hage
Software Developer, Technology Philosopher and Podcast Host
Wietse Hage
Software Developer, Technology Philosopher and Podcast Host
ABOUT THIS SPEAKER
Wietse has been following technological developments since starting his first company in the schoolyard. He studied philosophy of technology, taught subjects including media philosophy and has been creating podcasts about technology for around ten years.
SESSION
AI & impact on engineering
Breakout round 1 · 11:45–12:30
KEYNOTE
TALK · 10:30
Inge Bryan
Expert in Cybersecurity, Intelligence and Investigations
Inge Bryan
Expert in Cybersecurity, Intelligence and Investigations
ABOUT THIS SPEAKER
Inge is an expert in cybersecurity, intelligence and investigations. Until 2023, she was CEO of Fox-IT. Before that, she spent two decades working in intelligence and investigations and helped build data-analysis capabilities to combat cybercrime.
MAIN STAGE
Plenary opening
10:30
TED TALK
TALK · 14:45
Brankele Frank
Neurobiologist, Author and Winner of De Slimste Mens 2025
Brankele Frank
Neurobiologist, Author and Winner of De Slimste Mens 2025
ABOUT THIS SPEAKER
Brankele studied in Amsterdam, London and Paris, taught and worked in business. After experiencing burnout, she specialised in the neurobiology of stress and recovery.
SESSION
TED Talks with Brankele Frank & Edwin van der Sar
Breakout round 3 · 14:45–15:30
TED TALK
TALK · 14:45
Edwin van der Sar
Former Managing Director of Ajax and Ambassador for the Dutch Brain Foundation
Edwin van der Sar
Former Managing Director of Ajax and Ambassador for the Dutch Brain Foundation
ABOUT THIS SPEAKER
Edwin played for Ajax, Juventus, Fulham and Manchester United and represented the Netherlands 130 times. After his playing career, he spent ten years as Managing Director of Ajax.
SESSION
TED Talks with Brankele Frank & Edwin van der Sar
Breakout round 3 · 14:45–15:30
TALK · 12:00
Wouter Stoltz
Talent Manager & Trainer · Team Rockstars IT
Wouter Stoltz
Talent Manager & Trainer · Team Rockstars IT
ABOUT THIS SPEAKER
Talent Manager and former elite athlete. Wouter connects lessons from elite sport with insights into stress, attention, recovery and sustainable performance under pressure.
WORKSHOP
Presenting under pressure: from stress to performance
Breakout round 1 · 12:00–12:45
INVITE ONLY
TALK · 12:00
Simone van Erp
CPO · Team Rockstars IT
Simone van Erp
CPO · Team Rockstars IT
ROCKSTARS VALLEY
Simone hosts the AI Circle, an invite-only breakout for managers with an AI focus.
INVITE ONLY
AI Circle
12:00–13:30
TALK · 12:45
Ruud Cools
Principal Consultant · Team Rockstars IT
Ruud Cools
Principal Consultant · Team Rockstars IT
ROCKSTARS VALLEY
Ruud focuses on data-platform choices around sovereignty, portability, cloud dependency and control over enterprise data.
DATA
The urgency of sovereignty and portability for your data platform
Breakout round 1 · 12:00–12:45
TALK · 12:00
Olav van Rabenswaaij
Data Engineer · Team Rockstars IT
Olav van Rabenswaaij
Data Engineer · Team Rockstars IT
ROCKSTARS VALLEY
Olav approaches sovereignty and portability from the engineering reality of modern data platforms and cloud architectures.
DATA
The urgency of sovereignty and portability for your data platform
Breakout round 1 · 12:00–12:45
TALK · 12:00
Koen Sterken
Product Owner & Agile Lead · Team Rockstars IT
Koen Sterken
Product Owner & Agile Lead · Team Rockstars IT
ROCKSTARS VALLEY
Koen works with teams on structure, communication, autonomy, focus and psychological safety in complex working environments.
TALK
Different brains, one high-performing team.
Breakout round 1 · 12:00–12:45
TALK · 12:00
Marc Heusdens
Product Owner & AI Tribe Lead · Team Rockstars IT
Marc Heusdens
Product Owner & AI Tribe Lead · Team Rockstars IT
ROCKSTARS VALLEY
Marc works at the intersection of product, technology and team performance, with a focus on how different people work effectively together.
TALK
Different brains, one high-performing team.
Breakout round 1 · 12:00–12:45
TALK · 12:00
Rutger Keur
Director Core Solutions · VGZ
Rutger Keur
Director Core Solutions · VGZ
ROCKSTARS VALLEY
Rutger shares how cloud sovereignty moves from strategic discussion to practical choices within an organisation such as VGZ.
CLOUD
Cloud sovereignty in practice
Breakout round 1 · 12:00–12:45
TALK · 12:00
Ruurd Dam
Managing Director · Team Rockstars Cloud
Ruurd Dam
Managing Director · Team Rockstars Cloud
ROCKSTARS VALLEY
Ruurd works on practical strategies for European cloud choices, portability and reducing dependency without blocking delivery.
CLOUD
Cloud sovereignty in practice
Breakout round 1 · 12:00–12:45
TALK · 11:45
Joris Haverkort
CTO · Microsoft Netherlands
Joris Haverkort
CTO · Microsoft Netherlands
ROCKSTARS VALLEY
Joris focuses on moving from individual AI tools and experiments to AI at scale, connected to measurable business outcomes.
AI
Agent Boss: from AI tools to real business transformation
Breakout round 1 · 11:45–12:30
TALK · 13:45
Franck Pagny
Product Manager for AI Inference · Scaleway
Franck Pagny
Product Manager for AI Inference · Scaleway
ROCKSTARS VALLEY
Franck works on AI inference at Scaleway and focuses on open-weight frontier models, agent architectures, safety, cost and data privacy.
AI · CLOUD
Building safe and sovereign frontier AI
Breakout round 2 · 13:45–14:30
TALK · 13:45
Joris Krijger
Technology Philosopher & AI Ethicist
Joris Krijger
Technology Philosopher & AI Ethicist
ROCKSTARS VALLEY
Joris examines the ethical and societal infrastructure needed as AI increasingly changes work, learning and everyday life.
AI
Our Artificial Future
Breakout round 2 · 13:45–14:30
TALK · 13:45
Jasper Loos
Principal Consultant · Team Rockstars IT
Jasper Loos
Principal Consultant · Team Rockstars IT
ROCKSTARS VALLEY
Jasper focuses on Quality Engineering in complex enterprise environments and the question of what software teams can genuinely trust when AI accelerates code generation.
QUALITY ENGINEERING
Building faster, trusting less: Quality Engineering in the AI era
Breakout round 2 · 13:45–14:30
TALK · 13:45
Benjamin Abbenhues
Senior Cyber Defense Specialist · Team Rockstars Security
Benjamin Abbenhues
Senior Cyber Defense Specialist · Team Rockstars Security
ROCKSTARS VALLEY
Benjamin works in cyber defence and security operations, where technical analysis, escalation, communication and decision-making come together under pressure.
SECURITY
“Probably a false positive…”
Breakout round 2 · 13:45–14:30
TALK · 13:45
Robin Hogendorf
Account Manager Brand Partnerships · AFC Ajax
Robin Hogendorf
Account Manager Brand Partnerships · AFC Ajax
ROCKSTARS VALLEY
Robin works on brand partnerships at Ajax and shares the choices, activations and practical lessons behind the partnership with Team Rockstars IT.
PARTNERSHIP
Sponsorship Ajax x Team Rockstars IT
Breakout round 2 · 13:45–14:30
TALK · 13:45
Kimmy Gommers
Sponsor Manager · Team Rockstars IT
Kimmy Gommers
Sponsor Manager · Team Rockstars IT
ROCKSTARS VALLEY
Kimmy works on sponsorship at Team Rockstars IT and shares how the Ajax partnership translates into brand visibility, recruitment and business impact.
PARTNERSHIP
Sponsorship Ajax x Team Rockstars IT
Breakout round 2 · 13:45–14:30
TALK · 13:45
Oscar van der Leij
Solutions Architect · Team Rockstars IT
Oscar van der Leij
Solutions Architect · Team Rockstars IT
ROCKSTARS VALLEY
Oscar works on translating strategic ambitions into scalable technical architecture and network-automation platforms.
SOFTWARE
From strategy to Network Automation
Breakout round 2 · 13:45–14:30
TALK · 13:45
Aidan Langelaan
Full Stack Software Engineer · Team Rockstars IT
Aidan Langelaan
Full Stack Software Engineer · Team Rockstars IT
ROCKSTARS VALLEY
Aidan works on the engineering side of network automation, brownfield integration, orchestration and iterative delivery.
SOFTWARE
From strategy to Network Automation
Breakout round 2 · 13:45–14:30
TALK · 13:45
Ramona Domen
Software Engineer, International Speaker
& Community Leader · Team Rockstars IT
Ramona Domen
Software Engineer, International Speaker & Community Leader · Team Rockstars IT
ROCKSTARS VALLEY
Ramona explores how voice interfaces and AI could change usability, frontend engineering, APIs and the way digital interfaces are designed.
EN · LIMITED SPACE
Voice UI’s, AI, and the future of usability
Breakout round 2 · 13:45–14:30
TALK · 14:45
Sietse Bruinsma
Director of Technology · Vandebron
Sietse Bruinsma
Director of Technology · Vandebron
ROCKSTARS VALLEY
Sietse focuses on technology choices that preserve control, portability and resilience while the European energy system becomes increasingly digital.
CLOUD
Open Standards, Open Choices
Breakout round 3 · 14:45–15:30
TALK · 14:45
Brendan Kamp
Leading Platform Engineering & Cybersecurity · Vandebron
Brendan Kamp
Leading Platform Engineering & Cybersecurity · Vandebron
ROCKSTARS VALLEY
Brendan works across platform engineering and cybersecurity, with open standards, portable compute and resilience as architectural concerns.
CLOUD
Open Standards, Open Choices
Breakout round 3 · 14:45–15:30
TALK · 14:45
Antoine Tielbeke
Cloud Engineer & European Cloud Expert · Team Rockstars Cloud
Antoine Tielbeke
Cloud Engineer & European Cloud Expert · Team Rockstars Cloud
ROCKSTARS VALLEY
Antoine focuses on reducing dependency on American technology without turning sovereignty into an all-or-nothing migration programme.
CLOUD · EN
Not sovereign, but less dependent
Breakout round 3 · 14:45–15:30
TALK · 14:45
Roel van Bergen
Front-End Developer · Team Rockstars IT
Roel van Bergen
Front-End Developer · Team Rockstars IT
ROCKSTARS VALLEY
Roel explores agentic software development and how prompt engineering, context engineering and harness engineering make previously implicit engineering practices explicit.
AI · ENGINEERING
The Agentic Engineer: Making Implicit Engineering Explicit
Breakout round 3 · 14:45–15:30
TALK · 14:45
Koen van Gilst
Principal Engineer · Rabobank
Koen van Gilst
Principal Engineer · Rabobank
ROCKSTARS VALLEY
Koen works on making the value and quality of AI systems measurable through evaluation suites, objective model comparison and continuous monitoring.
AI
From AI hype to measurable value
Breakout round 3 · 14:45–15:30
TALK · 14:45
Menno Olgers
Organizational Culture & Design Expert
Menno Olgers
Organizational Culture & Design Expert
ABOUT THIS SPEAKER
Menno Olgers builds teams for a living and studies them out of obsession. An organizational culture and design expert, he has spent 25 years exploring one question: what makes people and teams perform at their best.
Over 25 years, 15 of them living and working abroad, he has built and led highly diverse teams across the globe. In Budapest, he built Aegon's global solutions center from scratch to 300 people, achieving top decile results on McKinsey's Organizational Health Index.
Today he leads a team at TenneT, where he shapes how a large digital organization works, decides and governs itself in one of Europe's most critical infrastructure environments.
For more than a decade, he has spoken internationally about high performing teams, culture, AI and the future of work. His talks combine storytelling, human psychology and provocative questions that challenge how we think about people and performance.
His conviction is simple: exceptional teams are not born. They are designed.
EN
What if humans aren't the part that needs fixing?
Breakout round 3 · 14:45–15:30
TALK · 14:45
Christoph Martens
Security Engineer · Team Rockstars Security
Christoph Martens
Security Engineer · Team Rockstars Security
ROCKSTARS VALLEY
Christoph works on secure and reproducible offensive-security tooling, including agentic systems, sandboxing, execution isolation and deterministic replay.
SECURITY · EN · LIMITED SPACE
Agentic Purpleteaming
Breakout round 3 · 14:45–15:30
ROCKSTARS VALLEY 2026
THE CONFERENCE
TECH CONFERENCE.
On Tuesday, October 6, 2026, the fourth edition of Rockstars Valley will bring together more than 600 engineers, clients and CIOs at the Johan Cruijff ArenA.
A day centred around Engineering Under Pressure, with keynotes, technical breakout sessions and conversations about the decisions engineers and organisations need to make under pressure.
THE AWARDS
THE ROCKSTARS AWARDS.
During Rockstars Valley 2026, we will once again present The Rockstars Awards.
A celebration of courage, impact, culture and the stories that make a difference in tech. The nominees are decided.
ENTRIES CLOSED
ROCKSTARS VALLEY 2026
WHAT TO EXPECT.
From thought-provoking keynotes and technical breakouts to conversations with engineers, clients and CIOs. One day centred around Engineering Under Pressure.
OCTOBER 6
Four elements shape the day: thought-provoking keynotes, technical deep dives, conversations with the community and The Rockstars Awards.
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KEYNOTES
Visionary keynotes from leading thinkers on AI, cloud sovereignty, security and performing under pressure.
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BREAKOUT SESSIONS
Breakout sessions where inspiring real-world examples and in-depth discussions come together to deliver concrete insights.
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COMMUNITY
Meet like-minded people from the IT industry who understand your challenges and build valuable connections during the networking drinks.
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ROCKSTARS AWARDS
The Rockstars Awards, where we celebrate courage, impact and culture.
TOPICS
WHERE IT GETS REAL.
At Valley, we focus on four themes where engineering under pressure becomes tangible. From the impact of AI and digital dependency to security and the human side of technical performance.
AI IMPACT
AI is changing how engineers design, build, test and evaluate software. As a result, responsibility for quality, control and technical decisions is shifting too.
CLOUD SOVEREIGNTY
How much control do you retain over your platform, data and infrastructure? We look at dependency, portability and the technical decisions behind digital sovereignty.
SECURITY
When systems come under pressure, technical analysis, communication and responsibility need to come together. That is when a team's resilience becomes truly visible.
PEOPLE FIRST
Technology is ultimately built by people. Focus, recovery, collaboration and decision-making all shape how teams continue to perform when the pressure increases.
ROCKSTARS VALLEY 2025
FEEL THE VALLEY.
See what happens when engineers, technology leaders and organisations come together in the Johan Cruijff ArenA. This was Rockstars Valley 2025.
Reserve your spot at Rockstars Valley ’26
Team Rockstars IT is organizing Rockstars Valley for the fourth year in a row. Ticket sales have officially begun. Tickets are €399 per person.
Did you receive a voucher code? First, complete your registration; the payment section, which includes the option to enter a voucher code, will follow.