She has had a long and varied career on-air in Australia on Australian Broadcasting Corporation (ABC) Radio.
She left the ABC in October 2011 to pursue her own writing, and has since published three books of non-fiction, several essays and a range of journalism.
Her collection of international literary interviews is Speaking Volumes: Conversations with remarkable writers, Scribe, 2010.
Koval has traveled extensively and documented conversations with some of the most exciting and respected authors writing in English, and she has made several radio documentaries.
In 2008 she was invited to be one of 1000 people taking part in the Australia 2020 Summit to "help shape a long term strategy for the nation's future".