Zellei studied Photography at the University of Kaposvár and received her MA in Photography at Moholy-Nagy University of Art and Design Budapest in 2017. In 2016 she studied as a visiting student at Hochschule für Künste Bremen. Besides Hungary, she was represented in exhibitions in Berlin, London, Vienna, Kanazawa, Breda, and Monopoli. Her works were published in several magazines, for example on the cover of HANT Magazine für Fotografie, in The Guardian, Spiegel Online, IMA Magazine (JP) and C41 Magazine (IT).
In 2020 she earned the 3-year scholarship of Hungarian Academy of Fine Art. In 2018 the artist was a New East Photo Prize finalist, a Prix Pictet nominee, and earned the Pécsi József Photography Grant. She won the third prize of Different Worlds competition in 2017.