Xavier Mas de Xaxàs is a diplomatic correspondent for La Vanguardia,  for which he has covered major international events (the fall of the Berlin Wall, the wars in Ukraine and Palestine, etc.). He was also their correspondent in the United States during the 9/11 attacks.

Throughout his career, he has advocated for better journalism. In this regard, he has taught classes at the Universidad Autónoma de Barcelona (UAB) and Blanquerna. He also founded the collaborative journalism project wikidiario.info.

He has been a scriptwriter for various documentaries, co-author of the video project La Cadira de Carme, and the interview series Giardinetto Sessions. Additionally, he has written several books.