Astrup graduated from Institut Le Rosey with an International General Certificate of Secondary Education (1995) and f… Se mere

Astrup worked in management consulting at Arkwright from 2000 until 2002. Between 2001 and 2008 he was the editor of the conservative periodical Minerva.
Prior to his election to parliament, Astrup worked as p… Se mere

Ahead of the 2009 election for parliament, Astrup was nominated as the Conservative Party's fourth candidate for Oslo, considered the last safe seat; he defeated Inge Lønning in the nomination. Astrup was elected Mem… Se mere

In 2022, Astrup was Norway's candidate to succeed Susanna Moorehead as chair of the Organisation for Economic Co-operation and Development's Development Assistance Committee. In the final vote, he lost to … Se mere

• Asian Infrastructure Investment Bank (AIIB), Ex-Officio Member of the Board of Governors (2018–2019)
• Multilateral Investment Guarantee Agency (MIGA), World Bank Group, Ex-Officio Member of the Board of … Se mere