Deloitte Top 200 judges

Jonathan Mason has over 30 years of experience in financial management roles in the oil, chemicals, forest products, and dairy industries with an emphasis on emerging markets.

Jonathan was CFO of Fonterra Co-operative, CFO of Cabot Corporation (a Boston based chemical company), and CFO of Carter Holt Harvey. Jonathan also served in senior financial management positions at US based International Paper from 1990-2000.

Jonathan is currently a director of numerous large organisations and an Honorary Adjunct Professor of Accounting and Finance at the University of Auckland. 

Darren has over 30 years’ experience in buy-side and sell-side roles in New Zealand capital markets. He is an Executive Director and Head of Markets at Forsyth Barr, a leading New Zealand wealth management, sharebroking and investment banking business.

Darren is a member of the New Zealand Markets Disciplinary Tribunal, a trustee of the University of Auckland School of Medical & Health Sciences Foundation and a member of the University of Auckland Foundation Investment Committee.

Hinerangi Raumati is a Fellow of Chartered Accountants Australia and New Zealand and a Member of the New Zealand Order of Merit. She is an experienced governor with a focus on post-settlement iwi entities and Māori commercial entities. Hinerangi has a particular interest in driving Māori economic development and creating models of governance that capture tikanga and mātauranga as an appropriate lens for doing business in Aotearoa.

She is the current Chair of Tainui Group Holdings Ltd and the iwi investment company of Ngāti Mutunga. She is on the boards of Genesis Energy, the NZ Super Fund, IAWAI – Flowing Waters Ltd, and Pouarua Farms GP. Her iwi are Ngāti Mutunga and Waikato. Hinerangi was also a member of the Tax Working Group in 2019.

Susan is a prominent figure in New Zealand’s business landscape, focusing on innovation, technology, and sustainability. As the Chair of Vista Group and Kiwibank, and an Independent Director on the boards of Xero, Mercury and Craigs Investment Partners, her work emphasises ambition for New Zealand with a special interest in using technology and inclusion to create a better future for all. 

Susan’s past directorships include Arvida Group, ASB Bank, Trustpower, Property for Industry, Compac Sorting and The New Zealand Merino Company. Susan served on the New Zealand Markets Disciplinary Tribunal for nine years and has been a long-serving member of the Global Women Board.

Susan is a Chartered Fellow of the Institute of Directors and has been a finalist in the New Zealand Women of Influence Awards.

Gavin Lonergan is non-executive director of leading private equity firm, Direct Capital. The firm has raised more than $2.2 Billion in capital and invested in more than 80 companies since its establishment in 1994. In his 28-year executive career with Direct Capital, Gavin served on a number of Direct Capital investee boards. He is a former chair of the New Zealand Private Capital Association. Gavin is currently a director of Qestral Corporation and a trustee of the Woolf Fisher Trust.

Juliet Tainui-Hernández (Ngāi Tahu, Ngāti Kahungunu, Te Whakatōhea, Te Whānau-a-Apanui) is a professional director and lawyer with 30 years’ experience spanning professional and financial services, central banking, investment and iwi economic development. She serves on the boards of ASB Bank, Powerco, Whai Rawa Fund, Rewiring Aotearoa and Skills Group Trust, and is a standing member of the Waitangi Tribunal. A former Assistant Governor of the Reserve Bank of New Zealand, Juliet brings extensive international leadership experience, having begun her career with Te Rūnanga o Ngāi Tahu during the Treaty settlement negotiations.

Juliet sees diversity, equity and inclusion as fundamental to effective governance, stronger institutions and sustainable performance. Grounded in te ao Māori, she champions diverse perspectives in leadership and decision-making to build a more inclusive, prosperous and resilient Aotearoa for future generations.

Rob is currently Chair of New Zealand Rural Land Company. He also holds the position of Chancellor at Auckland University of Technology. Rob has over 30 years’ experience in capital markets and has previously been a director of or advisor to a range of investment fund and private equity groups in New Zealand, Australia, Hong Kong and the United States of America.

In 2019, Rob was awarded a Companion of the New Zealand Order of Merit 2019 (CNZM) and received the Distinguished Alumni Award from Victoria University of Wellington.

Rob holds a Bachelor of Arts with First Class Honours in Economic History and Political Science and a Master of Philosophy in Economics. 

Dame Ranjna Patel, with her husband Kanti, set up the East Tamaki Healthcare Business in 1977. Tamaki Health has 52 clinics serving over 350,000 registered patients, and is the largest private primary healthcare, and telehealth provider in New Zealand. In 2014 she founded Gandhi Nivas, a family harm initiative that has seen amazing results in non-recidivism in men, and ROI of $1 to $12.80.

Dame Ranjna Patel has extensive involvement in charitable and community groups for which she received a QSM in 2009 and ONZM in 2017, and DNZM in 2025. She sits on many advisory boards: Koi Tu-Centre for Informed Futures, Exec Trustee of Total Healthcare, ISSO Swaminarayan Temple, New Zealand Police National Ethnic Forum, Counties Manukau Police Advisory Board and Chair of Indian Ink. Over the years she has been on NACEW, Lotteries Distribution Committee, Diversity Works NZ as Deputy Chair, Mental Health Foundation, Middlemore Foundation, Co of Women, Global Women, and Director of Bank of Baroda. She was past chair of the NZCIA Women’s Group and President of the Manukau Indian Association.