Since 1998, Freek used open source software. Many years he even has exclusively used FLOSS. In 2005, he joined Inter Access in Hilversum (NL) as a Linux nerd. At this company, he has set up a business unit of 14FTE which focused on the delivery of infrastructural open source solutions. In 2009, Freek exchanged Inter Access for Accretus to become a recruiter of ‘ethical hackers’ and open source specialists. After approximately 2 years, his favorite customer ITQ Consultancy approached him to learn whether he was interested in assuming the responsibility for its Security Unit and to expand the business. Nowadays, Freek is still working for ITQ and is also available for IT infrastructure open source & security assignments.