- Consultant and angel investor
- Member of the supervisory board of the Central Bank of Iceland
- Founder and board member at Dohop.com online travel search engine
- Member of Althingi for the Reykjavík North Constituency 2013 – 2016.
- Chairman of the Economic Affairs and Trade Committee 2013 – 2016
- Member of the Foreign Affairs Committee 2013 – 2016.
- Co-founder and chairman of DataMarket.com
- CEO and later Chairman of Dohop.com
- Chairman CCP Games
- Board member Arctica Finance
- CEO Nyherji Ltd.
- CFO Marel Ltd.
- Founder of Betra Peningakerfi – a movement for monetary reform in Iceland
- Founder of Advice – the „NO to Icesave“ campaign in a national referendum
- Board member Heimssyn – the „NO to EU“ movement in Iceland
- Board member Icelandic Chamber of Commerce
- Board member University of Reykjavik
- Board member University of Iceland Science Park
- Advisory board member for the University of Iceland MBA