Jonas Relitzki has been a member of the inclusive theatre ensemble Theaterkönig from Cologne since 2015. Since then, he has performed in seven productions under the direction of Ulrich Marx and Sabine Hahn. From 2016 to 2017, he was an ensemble member of the ImportExport Kollektivs, the young ensemble at Schauspiel Köln, under the direction of Bassam Ghazi. In 2018, Jonas Relitzki appeared in »Die Weber« directed by Armin Petras at Schauspiel Köln in the role of Der Dorfdepp. Jonas has also appeared in several works by directing students at the Folkwang Hochschule since 2020 and was in the cast of the feature-length TV film »Weil wir Champions sind« alongside Wotan Wilke Möhring in 2021.

For the 2023/24 season, Jonas was selected for the professionalisation programme for actors with cognitive and/or physical disabilities »NEXT GENERATION« at Schauspiel Köln.