From April 2017, until she joined Icelandair in early 2018, Birna served as Executive Vice-President of Marketing and Business Development for Landsvirkjun. She worked as an executive for the IT company Síminn from 2011, most recently as head of sales and services. Birna worked for Síminn from 2001, starting in public relations and HR. She led Síminn’s Project Management Office in 2006 to 2010 and concurrently managed market affairs in 2009 to 2010 until she accepted the post of executive officer. Birna has served on the board of directors of Skeljungur hf. since 2015 and Já ehf. Since 2017. She served on the board of directors of Farsímagreiðslur ehf., a mobile payment service provider, from 2012 to 2015 and on the board of directors of Gildi Pension Fund from 2014 to 2015.
Birna has a degree in business from the University of Reykjavik and an M.Sc. In management and strategic planning from the University of Iceland; she has also completed a programme of AMP studies for managers at the IESE Business School in Barcelona.