Our Speakers


Ivo Domburg

Designer at Luminis /Arnhem

I’m a designer with a broad experience in creating (web) applications and other digital experiences. I believe that you can’t be the best at what you do when you only do what you are best at. That is why I also write about product development and everyday human/technology relations. And I try to code. That doesn’t make me a writer or an engineer, but I believe it makes me a better designer.


Marc Teutelink

Software Architect at Luminis /Technologies

Marc is an experience architect at Luminis Technologies with almost 25 years of experience. Marc’s focus is mainly open source backend and (mobile) frontend technology. Besides his broad focus he is also specialised in Enterprise Search, Profiling and Recommendation, EAI and Semantic Web.


Evertson Croes

Software Engineer at Luminis /Arnhem

Evertson has been working as a software engineer at Luminis for over 3 years. He is interested in connecting the real world to the digital world by using technology. This is commonly referred to as the Internet of Things (IoT), which was the topic of his master thesis and which he works on every day at Luminis through the BDR project (Smart thermostat). He has worked the last three years on this project in the capacity of front-end and back-end engineer. He has also been responsible for leading the load testing initiatives for this project, which is the topic he will be covering at this conference.


Hans Bossenbroek

Co-founder & CEO of Luminis

Hans Bossenbroek is one of the founders and Chief Executive of Luminis. After a long career working for consultancy organisations and doing freelance jobs, Hans concluded that the potential of IT, the inherent complexity of software engineering and the power of innovation can only be unlocked by harnessing the power of the collective. It may seem strange, but this coincides with his love for jazz music, diving and mountaineering. They all build upon the aptitude, discipline and persistence of the individual in a team.

This complex reality is aptly described by Neil Young: “It’s better to burn out than to fade away”.


Steef Burghouts

Software Engineer at Luminis /Arnhem

As a Java developer, Steef loves to take deep dives into technology stacks. He believes that being a good developer is so much more than writing readable and elegant code. Developers should never lose focus on what they are trying to achieve with the software. Recently he has picked up on the no-interface hype and is working to integrate a smart home thermostat system with platforms like Alexa and IFTTT. Besides talking to Alexa, Steef likes to go for a run or bike ride and is trying to combine those in the near future.


Peter Doornbosch

Software Architect and Fellow at Luminis /Arnhem

Peter is a software architect with a passion for software development, fascinated by the fact that creating good software is a lot more difficult than most people think. He likes to share his knowledge and experience, whether it’s during design discussions at a whiteboard, or during talks and presentations. His personal motto is: “if you don’t know how it works, it probably doesn’t”. His personal interests include topics like modern programming languages and network protocols. Peter is author of the popular JMeter websocket plugin.


Frank Folsche

Software Engineer at Luminis /Arnhem

Frank Folsche is a Full Stack software developer. His role has grown over the years because he thinks it’s so much fun to be involved finding solutions for problems and challenges. He started as a .NET developer and from there on he has explored the various aspects of software development. From being a scrum master to finally being able to do front-end development the right way (the back-end way). Combine this with Xamarin and add Azure wherever possible and Frank is totally in his element.
Currently he is more and more focused on building cloud native applications in Azure and managing, building, deploying them there using Azure DevOps.


Sander Mak

Fellow at Luminis /Apeldoorn

Sander is a Fellow at Luminis in The Netherlands, where he crafts modular and scalable software, most often on the JVM, but with a touch of TypeScript when needed. He also is a Java Champion and author of the O’Reilly book ‘Java 9 Modularity‘. As an avid conference speaker, Sander loves sharing knowledge, also through his blog at http://branchandbound.net and as Pluralsight instructor.

Sander was voted as best rated speaker of DevCon 2017!


Bert Ertman

Fellow, Director of Technology Outreach at Luminis

A frequent speaker on Java, Cloud, and software architecture all over the world. Book author, and serial conference organizer. Bert Ertman was awarded the coveted title of Java Champion in 2008, and is a JavaOne RockStar speaker and Duke’s Choice award winner.

Bert was voted as best rated speaker of DevCon 2018!


Linda Stuurman

Front-end developer at Luminis /Rotterdam

Linda heeft een achtergrond in UX Design en frontend, waarbij haar expertise ligt op het gebied van responsive design en helpt organisaties graag bij het vormgeven en bouwen van nieuwe, complexe webapplicaties. Na geproefd te hebben aan Angular en React, werkt Linda nu ruim 2 jaar met veel enthousiasme met Vuejs.


Xander Uiterlinden

Software Architect Luminis /Technologies

Xander is a software developer at Luminis. He has a broad experience in architecture, design and engineering of modular applications. He is a committer at the Apache Felix project contributing to the Apache Felix Dependency manager component and is also involved in several other smaller open source projects.


Arjan Schaaf

DevOps architect at Luminis /Technologies

Arjan has been developing modular and web applications using Java, OSGi and Groovy for years as a software engineer and architect. As a DevOps architect, Arjan has shifted his focus to bringing development, operations and business together. Arjan has a passion for bringing the work of many people together in the Cloud and making it run secure and reliable, using the latest offerings the public cloud and the Linux Container Ecosystem.


Jeroen Reijn

Software Architect at Luminis /Amsterdam

Jeroen is a software architect at Luminis and is very passionate about software engineering and engineering culture. He likes to share his broad knowledge and helps the organizations he works with to apply practices like Continuous Delivery to reach a new level of productivity.
He has a strong Java background and is committer and active community member on several open source projects at the Apache Software Foundation.

Jeroen was voted as best rated speaker of DevCon 2018!


Robin van Kaathoven

IT Consultant at Luminis /Arnhem

Robin is an opinionated IT Consultant. Efficiency drives his goal-driven approach to building value for customers. A development process can always be improved upon, your use-cases can always be sharper, your versioning rules can always be cleaner, and your business can always evolve into something more.

The ‘business’ is not a boogieman trying to stop us from coding, we just need to help them understand what we need to code efficiently. Robin will help the business get what they need (not what they think they want) and empower the technicians to create the transcended solutions for users they so covet.”


Marleen Stikker

Founder of 'De Digitale Stad'

Marleen Stikker (1962) is founder of De Digitale Stad (The Digital City) in 1993, the first virtual community introducing free public access to the Internet. Presently, she leads Waag, a social enterprise that consists of a research institute for creative technologies and social innovation and Waag Products, that launched companies like Fairphone, the first fair smartphone in the world. She is also member of the European H2020 Commission High-level Expert Group for SRIA on innovating Cities / DGResearch and the Dutch AcTI academy technology & innovation.


Luc Hondshorst

Software engineer at Luminis /Apeldoorn

Luc is a software engineer at Luminis Apeldoorn. He is working almost 10 years as Fullstack Developer, both internally and as consultant. He finds the internal workings of programming languages and frameworks very interesting. He loves his profession and likes to enthuse others and can be found regularly on meetups. In his free time he helps with workshops for Devoxx4kids. In addition, he is involved in the game offer for the “offline” world at the local scouting group.


Ivon Reveco

Agile coach at Luminis /Amsterdam

Ivon has the role of agile project manager and agile coach at Luminis Amsterdam. She is an experienced trainer, coach and facilitator with over 15 years of experience. Because of her profound interest in neuroscience and as she calls it “the Human System”, she worked as a Brain-trainer for more than 8 years, which gave her the rare opportunity to research healthy brains and how people program themselves. She is fascinated by “the natural way of learning” and the role we give “the human brain”.
Guiding individuals and teams in developing the right mindset, creating structure and discovering their iterative way of working became one of her personal passions.


Hans Gringhuis

CTO at Luminis

CTO and Fellow at Luminis, working from Apeldoorn, Netherlands. Over 20 years in the software industry mainly as a software architect. Hans’ experience covers almost every facet of software delivery having worked across many different domains including E-Commerce, Publishing, Defence and Industry. Passionate about software and turning technology into a competitive advantage.


Majid Bahrepour

Data Scientist at Luminis /Amsterdam

Majid Bahrepour, PhD has over 22 years of experience in IT of which is over 12 years in data science and digital transformation. Majid has both hands-on experience (Python, PySpark, R, Data Pipelines, etc.) as well as business background (translating business to data science, writing proposals, requirement gathering, etc.). He has gained his experience through both academic track (A PhD degree with publishing over 20 scientific papers in data science) as well as his background in business and management consultancy. He also recently obtained his senior membership title from the Institute of Electrical and Electronics Engineers (IEEE), because of his significant contribution to his profession. Majid’s focus is currently to help businesses to benefit more from being data-driven as well as bringing data science to a higher level within organizations.


Mark van Kessel

Software Architect at Luminis /Eindhoven

Mark is software ontwikkelaar en architect bij Luminis Eindhoven. Begonnen in de embedded software met zijn low-level C en C++ code is hij overgestapt naar de enterprise Java wereld. Hij is van daaruit verder geïnteresseerd geraakt in alles wat met de Cloud te maken heeft. Zich nooit beperkend tot één taal, techniek of platform blijft hij nieuwe dingen proberen.


Sofie van den Borne

Software engineer at Luminis /Amsterdam

Sofie is een ambitieuze full stack software engineer bij Luminis met ruime ervaring in uiteenlopende projecten waarin ze zowel backend- als front-end werk op zich neemt. Ze kijkt met een kritische blik naar wat er gebouwd moet worden en hoe dat zo goed mogelijk te doen. Daarbij vindt ze het belangrijk om goed te communiceren met de klant om gezamenlijk naar de juiste oplossing te zoeken.


Matt Parker

Mathematician, Physicist and Engineer

Matt Parker is a stand-up comedian and mathematician. He appears regularly on TV and online: as well as being a presenter on the Discovery Channel his YouTube videos have been viewed over 75 million times. Previously a maths teacher, Matt wrote the books Things To Make and Do in the Fourth Dimension and Humble Pi: A Comedy of Maths Errors. He is also the Public Engagement in Mathematics Fellow at Queen Mary University of London.


Roberto van der Linden

Software engineer at Luminis /Amsterdam

Roberto is software ontwikkelaar bij Luminis, waar hij zich voornamelijk bezig houdt met het bouwen van bedrijfskritische applicaties. De laatste jaren heeft hij ook meerdere mobiele applicaties ontwikkeld waaronder de Luminis conferentie app. In zijn vrije tijd vindt hij het leuk om te knutselen aan IoT projecten.


Sam van Geijn

Software engineer at Luminis /Arnhem

Sam werkt sinds een paar maanden als junior software engineer bij Luminis in Arnhem, waar hij indruk had gemaakt met zijn afstudeeropdracht. Sindsdien werkt hij tussen 9:00 uur en 17:00 uur op een doordeweekse dag voornamelijk met Java. Wanneer hij in zijn vrije tijd programmeert werkt hij voornamelijk aan minder serieuze projecten, zoals de Nederlandse rap generator.


Rafaëla Breed

Software Engineer at Luminis /Amsterdam

Rafaëla is a software engineer at Luminis in Amsterdam and driven to solve problems with creative solutions. She is very involved in the development of backend systems in Java with Spring. This is including the surrounded technologies needed to test and monitor the produced applications. In her spare time, she also likes to keep up-to-date with frontend technologies such as Angular and React.


Jettro Coenradie

Fellow at Luminis /Amsterdam

Jettro is a search relevance engineer who specializes in giving customers the best possible search experience.  Jettro has been working with the elastic stack for years, and he knows his way around Solr as well. Next to search, he is experimenting with Machine Learning. Combining Machine Learning with Search to solve one of the hardest search problems, named ranking, is what keeps him going. Jettro believes in the vision of Luminis that: Knowledge is the only thing that increases by sharing. Therefore he writes blogs, gives training and presents at many meetups and conferences.


Willem Dekker

Software Architect at Luminis /Rotterdam

Willem has been fascinated with computers as long as he can remember. He started coding when he was eight years old and began his professional career as a Full Stack developer around 2000. After 20 years he has built up a tremendous amount of experience in building enterprise systems for larger and smaller companies.
Currently, he is working as an architect on a big-data cloud project, but he also likes to share his knowledge for example by giving workshops or as a speaker at conferences.Willem’s favorite quote is: “Keep things as simple as possible, but no simpler”. As a pragmatist, he is always seeking the balance between quality, functionality and not to forget: fun!

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