Since 2013, Martyna van Nieuwland-Markowska has been the head of programming of the Institution of Culture Katowice City of Gardens, where she programmes the Katowice JazzArt Festival and the world music festival Gardens of Sounds. In addition to writing for numerous publications dedicated to interdisciplinary forms of art, she specialises in curating interdisciplinary and social projects within the programme of Katowice – UNESCO Creative City of Music such as Polish aspect of Czech Music Crossroads in Ostrava. She was a member of the team that organised WOMEX 2017 in Katowice, is a current board member of Europe Jazz Network, and in 2019 was part of the programme committee for European Jazz Conference in Novara in September 2019.