Dagbjört was born on 14 July 1984 in Reykjavík.[1] She is the daughter of business economist Hákon Gunnarsson and nurse Katrín Björgvinsdóttir.[1] She graduated from Hamrahlíð High School (MH) in 2004.[1] She received a Bachelor of Artsdegree in law from the University of Iceland (HÍ) in 2008.[1] She received a Magister Juris degree from HÍ in 2010.[1] She was a student council representative and a board member of Röskva from 2005 to 2007.[1]
Career
Dagbjört was a law student at the Ministry of Transport (2008–2010), an intern at the Ministry of Foreign Affairs (2010), a lawyer at the Debtor's Ombudsman (Umboðsmaður skuldara) (2010–2014) and a lawyer at the Citizens' Ombudsman (Umboðsmaður borgarbúa) (2015–2018).[1] She was then a lawyer at the Office of the Mayor and City Clerk (2017–2018) and a Data Protection Officer for the City of Reykjavík (2018–2023).[1]
In 2002 Dagbjört joined the Social Democratic Youth (Ungt jafnaðarfólk), the Social Democratic Alliance (Samfylkingin)'s youth wing.[3] She was on Ungt jafnaðarfólk's executive board from 2003 to 2006.[1] She was chair of the Young Europeans (2011–2013) and on the board of Nippon – the Icelandic-Japanese company (2013–2015).[1] She served on the board of the Association of Liberal Social Democrats (FFJ) from 2014 to 2021 and was its chair from 2021 to 2023.[1] She was a member of the board of directors of Vertonet, an association representing women in information technology, from 2022 to 2023.[1]