Ásthildur joined GRI in 2007 and has held different position within the organization, including being one of two project managers responsible for the development of G4 and Director of the Report Services and Training and Coaching Departments. Since September 2017, Ásthildur has been responsible for all GRI´s regional offices and content development.

Ásthildur is originally Icelandic but also holds the Dutch nationality. Before joining GRI, she worked for international organizations in Brussels, Belgium and The Hague, The Netherlands.