Our People

Chair and Presbyterian Trustee

Mark comes to PSN with a wide range of experience in the Non-Governmental Organisation (NGO) and Commercial Governance sectors.

Mark’s NGO involvement includes Life Member of Rotaract, Child Cancer Foundation; Board Chair, RMHC NZ Trust; and Board Chair, Saint Kentigern Trust Board. Commercial Governance involvement includes Chair at Auckland Eye Limited, Health Improvement Group Limited, Ormiston Eye Limited, and Ormiston Health Properties Limited.

Mark has also served as Director for East Health Services Limited, and his Senior CFO roles have included Noel Leeming Group, The Warehouse, Trademe, Laybuy Group, and Crane Distribution Limited.

A Chartered member of the New Zealand Institute of Directors (CMIoD), Mark is also a Fellow of the Chartered Accountants (FCA) Australia New Zealand, and holds a Bachelor of Commerce (BCom).

Deputy Chair and Pacific Presbytery Liaison

Yvonne Timaloa joined the PSN Board in December 2020 as a liaison from the Pacific Presbytery.

Yvonne began her working career as an account manager for a global market research company before setting up her own consultancy specialising in research, communications, and community engagement.  She has gained over 25 years’ experience working with clients in government, non-government and corporate sectors that seek to communicate and engage with Pacific communities in New Zealand and in the Pacific Islands.  She has held governance and advisory roles in the not-for-profit sector. Yvonne is a graduate from the University of Auckland with a Master of Commerce with Honours.

She is actively involved in her Pacific community, including running of annual sporting events and conferences for youth and women.

Yvonne is of Tongan (Leimatu’a) and Samoan (Satapuala) descent, born and raised in Auckland and married with two daughters and a son. She has a matai title, Lilomaiava from the village of Satapuala, Samoa.

Trustee and Northern Presbytery Liaison

Barbara joined the Board of PSN in January 2020 as a Northern Presbytery Liaison. 

Barbara is a chartered accountant and chartered member of the NZ Institute of Directors and brings a wealth of experience from various sectors, including health and aged care.  

Barbara now spends her time serving on a number of NFP Boards, and with her extensive senior finance experience works with clients on adding value to their finance, governance and administration processes.

She currently serves on Parish Council at Glendowie Presbyterian church.  

A keen bridge player, if not playing, Babara can be found directing at various clubs in the Auckland area.  

Presbyterian Trustee

Kate is an experienced governance professional with strong strategy and leadership skills across a number of industries including health, not-for-profit and aged care. Beginning her career in the corporate world, she now commits her commercial skills and experience for social good, with a special focus on those with no voice.

Kate’s consulting and general management experience means she understands how to lead effective organisations to deliver on strategy. At the board table, Kate builds great relationships which drive authentic discussion; and she is a chartered member of the Institute of Directors.

Kate is married to Rob and they have two adult children. She follows in the footsteps of many generations of Presbyterians as an active member of the leadership team of St Columba at Botany.

Presbyterian Trustee

Kenneth is an open minded and strong advocate of agile and innovative approaches that support diverse communities to thrive. His approach to governance is values-driven, with a strong focus on diligence and pragmatism. Kenneth likes to be clear about agreed priorities. He also believes in bringing stakeholders on the journey to maintain trust.

He enjoys spending time with family and friends of all ages and backgrounds. He also enjoys being part of his local community, supporting sport and recreational activities, and attending his local Presbyterian church.  

Kenneth is very proud of his Pasifika identity and carries his Samoan heritage with him. He also understands the importance of our special relationship with Māori under Te Tiriti o Waitangi, which is always an important consideration in making holistic and sustainable decisions.

Independent Trustee

Markerita is an experienced public sector executive leader with deep expertise in health, equity, and large-scale system transformation. She has a strong track record of leading national reform, providing strategic stewardship, and embedding Te Tiriti o Waitangi and Pacific equity into policy and practice. Her leadership is grounded in ethical decision-making, collective impact, and a commitment to long-term public value.

Markerita holds an LLB/BA and is currently completing an Executive Master of Public Administration (EMPA). Her governance experience includes being a Director at Arataki PHO, a Trustee of UNICEF New Zealand, and a Director at Boundless Consulting Ltd.

Independent Trustee

Nigel joined the Board of PSN in January 2020 as an Independent Trustee.

Nigel is Director of Viatx Consulting, focused on business strategy consulting. He is a chartered member of the NZ Institute of Directors He is a Trustee of Presbyterian Support New Zealand and has had previous directorships with Leadership New Zealand and Lifeline Foundation Trust. He enjoyed a corporate career spanning 40 years, most recently with NZ’s largest company, Fonterra Cooperative Group where he held a number of senior leadership positions culminating in an assignment to Melbourne as GM Strategy for Fonterra Australia.

Prior to joining Fonterra, Nigel held general management, finance, marketing and consulting roles in the IT & Telecommunications industry, with gen-i and Netway (both since absorbed into Spark) and IBM in both NZ and the UK. He has served as an elder and chairman of the leadership team of the Mt. Roskill Baptist Church and chair of the Roskill Community Trust.

Nigel is married to Adele and they have 3 children in various parts of the world.

Independent Trustee

Rachael is a descendant of the Tainui Waka and of Ngāti Maniapoto.

She is Co-Director of MAPSS (Māori and Pasifika Support Services) which focuses on the intersection between indigenous people’s and improving social outcomes.  She is a former academic of the University of Auckland’s Faculty of Education;  Education Manager of the Auckland South Corrections Facility, and a former Secondary School Teacher.

Rachael’s recent governance experience includes the Boards of Education New Zealand, The New Zealand Qualifications Authority (NZQA), Manukau Institute of Technology, Voyce: Whakarongo mai, Variety Children’s Charity, Man Alive Charitable Trust, Auckland Community Law Centre and COMET Auckland.

Chief Executive (Kaiwhakahaere Mātua)

Shaun joined Presbyterian Support Northern (PSN) as our Chief Executive in December 2024. He is of Ngāpuhi descent.

Shaun has a strong track record in leading for-purpose organisations. Prior to his role at PSN, he was the Executive Director (CE) of Amnesty International Aotearoa New Zealand. This followed his previous stint at PSN where he was GM Engagement, overseeing our People & Culture, Health & Safety, Communications & Marketing and stakeholder engagement functions.

Shaun has also held senior leadership roles in several New Zealand not-for-profit organisations, including New Zealand Red Cross, Scouts Aotearoa and Hato Hone St John. Shaun has previously been on the National Board of Girl Guiding NZ and is currently serving on the Priory Chapter for Hato Hone St John. He was granted the honour of Officer of the Order of St John (the equivalent of an OBE) by Her Majesty Queen Elizabeth II in 2014. 

He is a Member of both the CEO Institute and the Institute of Directors.

Chief Financial Officer

Craig has worked at PSN as CFO since July, 2023. His focus is on working with the Leadership Team and Board on setting and delivering the financial plan for the organisation, and managing the resources to achieve this. He qualified as a chartered accountant in 1993 at Ernst & Young, and has worked in the UK and South Africa. Craig has 20 years’ experience working in charitable organisations, including CFO at Auckland UniServices, and trustee at Monte Cecilia Housing Trust. Prior to joining PSN, Craig ran his own consultancy, providing strategic advice to 32 start-up companies between 2016 - 2022. He has spent many years volunteering in the community including 24 years working in church and youth leadership areas, and 10 years in Rotary.

General Manager, Social Services

Grenville joined in August 2023 as General Manager for PSN’s Social Services, which includes Family Works, Lifeline and Shine. Grenville originally comes from South Africa and has lived in New Zealand and Australia for 25 years.   Grenville is a social services professional with extensive senior leadership experience in New Zealand and Australia. This includes significant experience in both government policy and operational management of large multi-disciplinary teams. He is passionate about making a difference in the lives of whanau and communities, and this has guided his work choices.   His most recent role was Operations Manager, Starship Child Health. Prior to that, Grenville held senior management roles at OzChild (Australia), Oranga Tamariki, Ministry of Social Development, and Child and Adolescent Mental Health Services (NZ and Australia).   Grenville holds an MBA, Post Graduate Certificate in Health Sciences, Diploma in Social Work, and Bachelor of Arts (Hons) (Psychology).   Grenville is a keen gardener and swimmer, and together with his Kiwi partner, he enjoys travelling and meeting people from different places and cultures.

Kaitohu Matua / General Manager Māori

Joe joined PSN in April 2023. His role as Kaitohu Matua is to provide strategic leadership and advice as PSN seeks to engage more fully with Te Ao Māori. Joe also supports PSN’s Kaitakawaenga and Hau Kāinga Rōpū, and other kaimahi Māori across the organisation. Joe is of Te Rarawa and Te Aupouri descent, an uri of Ngapuhi-nui-tonu. He comes to PSN from a Senior Cultural Advisor role at Te Whatu Ora (Greenlane Hospital, Tamaki Mākaurau) and is also a Director of Haua Partners, which works with organisations to strengthen responsiveness to bicultural practice. Joe has trained and worked as a social worker previously and worked with PSN between 2007 and 2009.

General Manager, Fundraising, Marketing & Social Enterprise

Lisa joined PSN in late 2021 and represents Fundraising, Marketing and Social Enterprise. As the organisation enters a period of increasing demand, fundraising and commercial activities are vital to ensure the maintenance of core programmes and development of new and exciting opportunities. Lisa has a background in marketing and has nearly 20 years of fundraising experience gained in the health, arts and culture sectors – most recently as Head of Development at the Auckland Museum. Her favourite saying is ‘from acorns grow oak trees’ – especially when acknowledging and celebrating our donors who support PSN’s work and our mission ‘A better life for everyone’.

General Manager, Engagement

Tom joined PSN as General Manager, Engagement in September 2022. He was born and raised in Glasgow, Scotland but has spent most of his life in Aotearoa. Tom moved to the NGO sector from the banking industry in 2000 and has held People and Culture executive roles in St John, Healthcare NZ and IHC Group. He is a Chartered Member of the Human Resources Institute of New Zealand.

General Manager, Health and Disability

Wendy has worked at PSN since 2014 originally as General Manager Development, then Chief Operating Officer and most recently as GM Health and Disability (Enliven). She has a special interest in providing services which allow people to live in their own homes for as long as they are able and in developing services for people living with dementia. She has more than 20 years’ experience in the health and social sectors working in management positions in Auckland DHB and Waikato DHB in both Operational Management and Funding and Planning Management. Wendy is a Chartered Accountant and has a Certificate in Company Direction. She is a Board Member of the Home and Communities Health Association and shares a keen interest in golf with her husband Stephen.