Thorhildur holds a BBA in International Business from the University of Texas at Austin and an MBA from Reykjavik University.

She has extensive experience in the Icelandic finance sector, having worked in private banking, investor relations, and as a financial analyst. In recent years, She has focused on consulting in marketing and strategic management, helping businesses refine their brand positioning, optimize market strategies, and achieve long-term growth. She is also an entrepreneur and co-owner of a company she runs with two other women.

Thorhildur has been actively involved in initiatives supporting women in business. She previously served on the board of UNIFEM Iceland and has been part of a committee dedicated to fostering female-led startups.