Diana Nadebaum

Chief People Officer, GURNER

Diana is a commercial and strategic HR leader with international experience across a range of global roles and industries, including property, technology, banking & finance, retail and automotive.  

Diana completed a Bachelor of Commerce / Bachelor of Arts at The University of Melbourne, where she majored in Human Resource Management and Psychology. She holds nearly two decades of generalist HR, change, transformation, leadership and talent management experience. 

Previously, Diana held Head of HR positions within Telstra Consumer and Telstra Business, and was also General Manager Talent & Acquisition for the national telecommunications leader. Other roles have included Group Talent Manager for Salmat and Senior HR positions for Lloyds Banking Group in the UK. 


Diana joined Opteon in 2018, in the newly created Chief People Officer role. Opteon is an international provider of independent property valuation, advisory and specialist property services in the Australian, New Zealand and US markets and are currently embarking on a major international expansion journey. 

At Opteon Diana leads the people, culture, change and communication strategy in support of the Opteon strategic growth goals, the transformation of the operating model and achievement of Vision2023