Complex sentence: Since 1996 he is working at the Telematica Instituut appointed as Member of Scientific Staff in 1996, in 2000 he became Manager Application Engineering, in 2006 Expertise Group Leader, and since 2009 Principal Advisor.
Split into simpler sentences: Since 1996 he is working at the Telematica Instituutm where in 1996 he was appointed as Member of Scientific Staff. In 2000 he became Manager Application Engineering, in 2006 Expertise Group Leader, and since 2009 he is Principal Advisor.