Started out in multi-media in the early nineties with some of the first online stores in the Netherlands, the first online supermarket in the Netherlands, and too many CD-ROM projects to count. Moved to KPN for a few years to do the kpn.com architecture, before starting his own company. iPhone apps, Android apps, making a Raspberry Pi check the acidity of a swimming pool whilst receiving airplane locations, and working on medication safety for electronic prescriptions, everything is fair game. Security isn’t a separate subject - it is part of everything. Since co-founding Radically Open Security he has made several radio appearances to talk about cybersecurity. He joined the IT Professional of the Year 2017 jury, and speaks about cybersecurity to a wide variety of audiences on a regular basis.