Tessa Sima, born in Vienna, began hercreative career at the age of seven when she built a robot that said swear words to her teachers. Many longer stays abroad in countries such as Iran, China, Estonia and Denmark have had a lasting impact on her world view and her work. In 2021 she graduated from the University of Applied Arts Vienna in the class for graphic design and advertising. She works as a creative with a focus on illustration and writes.

If Responsibility Were a Hat is her first picture book.