[3][4][5] He has served as acting director of the Office for Cooperation with the Diaspora and the Serbs in the Region in the Ministry of Foreign Affairs of Serbia since 26 November 2020.

In 2004, he passed the examination for admission to the Engineering Polytechnic School of the University of Grenoble, majoring in Ecology and Risk Prevention.

[11] Between 2007 and 2010 he worked as an engineer at L'Oréal in Paris, at the Chamber of Commerce in Bordeaux, as a professor of physics at a French school in Cairo and as a quality coordinator in Zvornik (Republika Srpska) for Studen-Prom, a company exporting frozen food products to France.

[17] However, according to the Balkan Investigative Reporting Network, from 2011 to 2015, Solidarity for Kosovo has allegedly spent more money on collecting funds rather than performing its mission of local level actions.

[3] With the support of over 12,000 donors from all over France, and without any State or European sponsorship, Solidarity for Kosovo has organized over 44 humanitarian aid vehicles and funded dozens of projects in the areas of education, health and agriculture in cooperation with the Diocese of Raška-Prizren.

[15] In cooperation with the Soup Kitchen "Majka Devet Jugovića", it funded the construction of five farms, one dairy, one plant for the pasteurization of fruits and vegetables, it built dozens of greenhouses and purchased hundreds of animals such as cows, sheep and goats, as well as agricultural machines for the local Serbian enclaves.

[15] From 2012 to date, it has renovated 34 schools, took hundreds of children for the first time to the seaside, and helped operate two maternity wards, one hospital and four health centers.

Two years later, he became the trademark and the leader of the Speech Culture Caravan, which organizes trainings and panels for young people across Serbia and Republika Srpska.

[15] He is a frequent guest of the different Institutes of Culture, Universities and Secondary Schools from Serbia and Republika Srpska, that invite him to talk about his experience in the field of humanitarian work and social involvement, but also on philosophical topics such as the symbol of life, humanism, justice.

He did so on the behalf of several far-right movements, including the Bloc Identitaire, known for its support to European nationalist parties and opposition to immigration, of which the young Arnaud Gouillon was a member.

[15] Since 26 November 2020, Gujon is serving as the acting director of the Office for Cooperation with the Diaspora and the Serbs in the Region in the Ministry of Foreign Affairs of Serbia.

[21] He published the book, "All My Roads Lead to Serbia," explaining the reasons that led him to support Serbs in Kosovo as well as his move to Belgrade.