Katrín Júlíusdóttir has a political background and was a member of the Icelandic parliament from 2003 until 2016. Before she was elected to parliament, Katrín was an advisor and project manager at a tech company and a senior buyer and CEO in the retail sector. She worked from a young age in the fishing industry, was a store clerk and also worked the night shift at a pizza restaurant. She studied anthropology and has an MBA from Reykjavík University. Katrin's debut novel, Dead Sweet, was published in English in 2023, and longlisted for the Waterstones Debut Fiction Prize. She is married to critically acclaimed author Bjarni M. Bjarnason, who encouraged her to start writing. They have four boys and live in Garðabær.