He was a chair of the Board of Governors of the Serbian National Internet Domain Registry Foundation (RNIDS) between 2013 and 2016. He was also coordinating Working groups for ethical policies (2011-2012), IDN Working Group / Rules and Principles (2010), and was directly involved in launching Serbia's IDN ccTLD, .срб.
He has a background in editing, and was the Editor-in-Chief of "Svet kompjutera" (Computer World), which is the oldest computer magazine from the countries of the former Yugoslavia. He started as a contributing author in the magazine in 1987, became a section editor in 2003, and Editor-In-Chief in 2005. Dušan studied Electronic Engineering and is a member of Serbian Society of Engineers.