Harald worked for four years as a CPA after his graduation from the Hogeschool Holland in Diemen. After these four years he worked with Bertelsmann Media Group (BMG) and worked with several companies in different countries for the next 12 year, all of which media- and entertainment related. In this period he was also involved as financial controller with the movie Wit Licht. In 2006 he founded HJB Financial Management B.V. in which he starts working full-time in 2007.

Up till today this company facilitates a wide variety of companies, foundations and private persons with financial issues, planning and forecast and optimization of organizations and structures. In the past 20 years Harald has served in the board of several associations and foundations.