Zoltán Gelsi spent 2011-2014 working towards his bachelor's degree in applied visual design and costume design at the Hungarian University of Fine Arts. Since 2014, he has been enrolled in the master's programme in visual design at the University of Theatre and Film Arts Budapest. He created a Christmas installation for the Kiscelli Museum in 2012, and in 2013 developed the visual design for an exhibit on the history of paper packaging entitled Wrap Art (curated by Anikó B. Nagy), and later on, in 2014, worked as assistant to visual designer Judit Csanádi in Recirquel's contemporary circus production Paris de Nuit. He is one of the founders of the Pantheist fashion brand. At the Best of Diploma 2014 exhibit, his work for Mihály Kornis's drama Hallelujah won the award for best set design, and in 2015, his set and costume designs for Molière's play George Dandin were featured at the Beijing International Art Biennale.