Janus Verrelst possesses expertise in international relations, sustainable development, international development, policy analysis, intercultural communication and 1 more skills. Colleagues describe them as "Janus Verrelst replaced me as the scientific cooperator of USOS in 2007. He took over the difficult task of bringing sustainable development education to the university campus of the University of Antwerp with a maximum of student participation in the setting up the content as well as the management of the awareness activities, and he does it splendid with great devotion and professionalism."