Kristrun Frostadottir is a Member of the Icelandic Parliament (Althingi) for the Social Democratic Alliance. She has been an active public speaker on macroeconomic and economic policy matters in Iceland, in national media and policy circles. In the three years prior to her candidacy for parliament Kristrun was the Chief Economist at Kvika, a specialized Icelandic bank focusing on asset management and investment services. Kristrun oversaw and conducted macroeconomic analysis for the bank and advised clients on economic and policy matters.

After moving back to Iceland in 2017 Kristrun conducted policy research for a short period as Chief Economist at the Iceland Chamber of Commerce. She has served as Chairman of the Agricultural Pricing Committee at the Ministry of Industries and Innovation and participated in government work on tourism policy. Kristrun also served as adjunct lecturer at the University of Iceland where she taught economic policy to undergraduate students alongside her role at Kvika.

During her studies at Yale, Kristrun focused on economic policy and international finance. She was a summer research associate in Morgan Stanley's New York office in 2015, joining the firm full time in London in 2016. Before coming to Yale, Kristrun worked as an economic analyst for Arion bank in Iceland and as lead economist in a working group on Monetary Reform for the Prime Minister‘s office. In addition to her master's degree in Global Affairs from the Jackson Institute at Yale University, she holds a master's degree in economics from Boston University and an undergraduate degree in economics from the University of Iceland.