Willem grew up in Amsterdam where he obtained his undergraduate and graduate degrees at the University of Amsterdam. After many years in software development, Willem made the move to localization. He has over 25 years of experience in translation, localization, and internationalization of marketing materials, software products, and web content. His focus is on project and quality management and localization strategy/processes improvement.

Willem became a PMP® in 2002 and was very involved with the Project Management Institute where he was a board member of the Portland and Silicon Valley chapters. Training for localization is a top priority for Willem with focus on project, quality and risk management. He is a former professor at the Monterey Institute of International Studies and he is also the creator and presenter of the Localization Project Management Certification and a roundtable leader for the Project Management Round Table and the Technology Round Table.