Rien is driven, creative and decisive, he is open to new developments and likes to share his experiences with others.

He gained his years of experience in the field of cost management, project planning and project management at various employers, before he founded his own company in 2013. The first years of his career he worked for a major client. In the last 10 years he has done many international projects for that company. After 1999, he worked at (small and large) consultancy firms and his specialisation in costs was further developed.

In addition to the projects that he has been carrying out since 2013 as an independent entrepreneur, he is affiliated with a large internationally oriented engineering firm for which he issues cost advice and performs cost management tasks for both small and large projects, for new construction, renovations or maintenance.