Johan is an independent software architect with a special interest in security.

In 2004 he was so appalled at the poor security he encountered in his daily practice, that he turned to friends and colleagues in industry and universities to run a week-long course on developing secure software applications. Hence the first SecAppDev course took place in February 2005 and the partnership that formed between faculty members of KU Leuven, Solvay Brussels School of Economics and Management and professional software developers grew into a non-profit organisation offering an annual internationally acclaimed course.