Hi, I'm Marijn.
I'm a unicorn designer developer UX-designer UX engineer

Hi, I'm Marijn.

OpenRCT2 & OpenLoco

2016 – present

I've been involved in the open-source game reverse engineering projects OpenLoco and OpenRCT2. I converted x86 assembly into C and C++ code. For OpenRCT2, I introduced automated testing for the ride drawing code. I was also responsible for adding Android and macOS support to OpenRCT2 and OpenLoco respectively.

  • Open Source
  • Reverse Engineering
  • x86



During my internship I worked on converting the desktop-first website builder to various mobile-compatible designs. I contacted active users to gather information about why they were attempting to use a website builder on mobile, in order to find what features were important. The registration flow, dashboard and website configurator were all prototyped on a fork of the real codebase. Afterwards, I organised usability tests, and updated the prototypes based on the feedback.

  • Usability Testing
  • User Research
  • Responsive Design
  • Mobile
  • Prototyping
  • JavaScript
  • Zend Framework
  • PHP

One More Thing

2014 – 2017

Introduced Composer, automated release deployment and helped with move from physical hardware to virtual servers. Worked on converting 10+ years of legacy forum content to CommonMark, and created yearly interactive 'keynote bingo' cards.

  • PHP
  • WordPress
  • DevOps

I'm an Interaction Designer and Front-end Developer from the Netherlands (hence my hard-to-pronounce name). I got my bachelor's IT & Media Design in Eindhoven, The Netherlands, followed by a master's in Human-Computer Interaction in Umeå, Sweden. I'm not ‘just a’ designer, nor ‘just a’ developer. I'm active as both, and often try to combine the two disciplines in the form of prototypes.

I'm active in various open source projects, aiming to provide the often missing designer's voice, while still being aware of the technical implications.

I frequently tweet, share my code on GitHub and also have LinkedIn, if that's your thing.

Oh. And e-mail is also an option.