Daniela Janjic was born in Mostar, Bosnia-Herzegovina in 1984. After the Yugoslav Wars began, she spent part of her childhood on the road in places like Sweden and Switzerland. In 2005 she began studying German literature at the University of Zurich before switching to the Bern University of the Arts to study creative writing at the Schweizerisches Literaturinstitut. As part of the Dramenprozessor programme for young authors at the Theater Winkelwiese in Zurich, where she also worked as an assistant director multiple times, Gelbe Tage, her first play, celebrated its world premiere. It was then invited to the fourth Wochenende der Jungen Dramatik at the Münchner Kammerspiele and to World Interplay in Australia, as well as being produced and read in staged readings in multiple countries including Austria, Belarus, Chile and Georgia.
In 2008 Janjic participated in the Werkstatttage workshop at the Burgtheater Wien and studied dramatic writing at the Universität der Künste Berlin from 2010-2012. She received a fellowship from the Literary Colloquium Berlin and was honoured in 2012 with an award from the Société suisse des auteurs for her play Hotel Bellevue. Daniela Janjic works as a freelance author and director in Berlin and is represented by Rowohlt Theater Verlag.