Leadership Team

Our leadership team is responsible for more than 60 staff and 2,000 volunteers. Their array of skills and experience has been gained from positions they’ve held all over the world. The sectors they’ve worked in include engineering, science, technology, law, finance, education, marketing and communications.

Chief Executive

Susan Freeman-Greene

Susan became our Chief Executive in February 2015. She has worked in senior leadership and management for the last 15 years. Her most recent position was as the Chief Executive of the Broadcasting Standards Authority. Susan’s practised law in both New Zealand and England for over a decade.

General Manager – Professional Standards

Brett Williams


Before taking up this position in 2005, Brett worked as the Manager Quality Assurance at the New Zealand Qualifications Authority. He was responsible for the quality assurance of private training providers in the tertiary education sector. Brett leads work in the key areas of graduate support, continuing professional development, qualification accreditation and competence assessment. An important part of his role is to ensure New Zealand's standards for qualification accreditation and competence-based Membership and registration continue to meet international standards.

General Manager – Engineering Leadership

Tania Williams


Tania joined us in March 2017 from a long career at MWH, where she was most recently General Manager of Water and Waste.

Tania leads our work on professional engineering practice and policy, growing our continuing professional development portfolio, and fostering relationships with our technical groups.

In addition to being an experienced engineering leader and well known throughout the industry, Tania is a staunch supporter of engineering graduates and of raising engineering’s profile.

General Manager – Marketing and Communications

Bridgit Sissons

Bridgit joined IPENZ from primary industries non-profit organisation OSPRI, where she held the role of Business Development and Marketing Manager. Her previous roles have included marketing and communications, change management and executive management work for organisations including BNZ, ANZ, the Ministry of Social Development and cult-clothing boutique Jetsetbohemian. Bridgit is also Deputy Chair on the Board of Directors of Accuro – NZ’s oldest member-based insurance provider.