A textual overview of some projects I’ve worked on at the companies Level Level, Hoppinger, 0to9 (MetroDC / Bouwmeester van Leeuwen) and currently as an independent developer at my own company Digital Passenger.

Open Source

WordPress is open source and I contribute to plugins and tools that I use. Also check out my GitHub profile for examples like WP-CLI and WP Clarkson: Twig for WordPress.

Freelance at Digital Passenger, 2018 – now

Hired by Level Level – Digital Agency (I used to work at Level Level developing high-end WordPress soluctions)

My latest project as a freelancer for Level Level was for the Dutch foster care organisation Pleegzorg.nl. This application ran on WordPress as a pilot while the tender was set out and could be fully implemented behind the scenes. Here I converted designs from Sketch to accessible front-end code. I worked together with the product owner, content managers of the pleegzorg.nl platform and the level designer to bring concepts to practical solutions.

Reiscompany Camping platform – It all started with campingfrankrijk.eu and after 8 years of working together, Reiscompany and I still have the greatest fun and passion on the Campingspotter platform. It has grown from an underdog to one of the major players in the camping world. Every week we continue to tinker with the platform to further grow and optimize it. Since 2020 I have been working on the platform as an independent developer.

IAB ingenieurs e-learning platform – Monique Dubbelman called me to help with major performance issues on the website. After solving these we started optimising the platform and at one point did a total front-end revamp and custom integration of a course administration done with my fellow WordPress developer Luc Princen.

Hired by Buro Staal – Rosanne called with the question to build the new WooCommerce webshop gezinnig.nl together with their Lead developer Johannes. I was only too happy to do this for this top agency!

Peinemann equipment – At Peinemann I’m working on an internal tool to simplify and optimize the quotation process for all the international departments and their customers.

Breekjaar.nl – Speed optimization, maintenance, automation and extension of the custom website, after I took over the project from the original builder.

Perfectionism coach, stress and burnout prevention coach Xandra van Merrienboer – For Xandra I created an SEO optimized website that serves as a platform for her services and perfectionism programs.

Lichtschrijfsel.nl – Realization and User experience (UX) and online branding. Based on an existing theme.

Smartpixel – Full service agency – Development and maintenance of existing and new clients.

Treffpunkt.nl – A supply and demand platform for sport enthousiaticts to find a professional guide or teacher for their next adventure and a place for self-employed guides and sport teacher to promote their availability and to be hired!

Level Level, 2013 – 2018


At Level Level Full Service agency I worked on beautiful projects like the ones below and I also worked within the WordPress service and support department.

New Scientist, Cordaid, Reiscompany platform, ABN Financial Focus, ABN Insights, SOMO, Good Electronics and MVO Platform.

Hoppinger, 2011 – 2013


At Hoppinger I worked as both a back-end developer and front-end developer. Below some of the featured projects

Campingfrankrijk.eu (Reiscompany platform) – Project management. Lead developer & interaction designer. Customization.
OHM Foundation – Multisite & theming architecture.
Spigt Litigators – Lead developer, back-end & front-end – Multilanguage using WPML.
KoersVO – Corporate website – Lead developer, back-end & front-end.


De Boekensalon – Lead front-end / back-end developer.
Van Oord – Lead front-end developer.
Paans van Oord – Lead developer.
Radtech Europe – Lead front-end developer.
Ministry EL & I Topsectoren – Projectmanagement & Lead front-end developer & back-end developer.

Symfony 2

Energeia Energy Tracker – Lead front-end developer
Koers VO – Care Profiles – Lead front-end developer
CRH Campaign Monitor tool – Project management – Wireframing, Design & Front-end Development

MetroDC (0-9), 2007 – 2011


My Realitycheck for Hogeschool Leiden & Haagse Hogeschool – Lead front-end developer & back-end developer

GGD Rotterdam – Lead front-end developer & back-end developer

United Dutch Breweries – Lead front-end developer


Reflex Art Gallery Amsterdam – Lead developer.
Philips annual report 2006 & 2007 – Lead developer.
Philips worldwide newsletters – Lead developer.