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She worked in various positions at Actavis Group until she was made vice president of the company. She resigned when she accepted the nomination for president of Reykjavík University. She is a member of the Board of Alvogen. Grönfeldt published the book Service Leadership - The Quest for Competitive Advantage, in 2006, along with Judith Strother.
- "The secret to the success of Reykjavik University". IceNews. 8 January 2008. Retrieved 2 August 2010.