Ms von Tunzelmann has made significant contributions to governance and management across public and not-for-profit sectors, working at one time at the Treasury, Ministry of Justice and Office of the Clerk of the House of Representatives.
She was the chairwoman of the New Zealand Women's Refuge Foundation, is vice president of Age Concern New Zealand, a member of the Council of Te WhareWananga o Awanuirangi, and a patron of the Tauranga Community Housing Trust, which provides housing for people with disabilities.
Living in Tauranga for the past 15 years, she served as president of the Tauranga region Chamber of Commerce and led a revitalisation of the Chamber's Business Women's Network.