Management Team

Tracey-Leigh Peters, CEO

Tunumafono Tracey-Leigh Peters has a background in education and human resources. She began her career at Iosis in 2008, as Executive Administrator. She became Operations Manager in 2013, and was Acting CEO for 10 months before her official appointment as CEO on 1 September 2015. Tunumafono is a matai (chiefly) title from her Samoan family line.

To give a voice to our most vulnerable and give them the opportunity to make the changes needed to have a good family life is the heartbeat of what we do. To see that transformation happen through the support that we can give is priceless.
Tracey-Leigh Peters, CEO

Wayne Boyd

Wayne Boyd
Finance Manager


Daphne - Business Operations Manager, Iosis
Operations Manager

Heidi Crawford

Heidi - Iosis SWIS:MASSIS Manager

Sunema Ah-Hing

Iosis Service Delivery Manager
Service Delivery Manager

Board of Directors

Bonnie Robinson, Chair

Bonnie is the CEO of HBH Senior Living. She has worked for over 20 years in social service organisations including Age Concern, The New Zealand Council of Christian Social Services, Presbyterian Support and Alzheimer’s Auckland. Bonnie has served on the board of Iosis for the past 6 years.

I am privileged to work with such a committed and competent team. Our God-given task is together bringing wholeness to individuals and families, and providing skills for permanent change that will be passed on from one generation to another.
Bonnie Robinson, Chair

Vao Muller

Vao Gale
Board Member
Vao Muller is a barrister specialising in family law.

Lyndon Twemlow

Board Member
Lyndon leads the pastoral team of Manurewa Baptist Church.

Andrea Page

Board Member
Andrea began her work in the community sector 20 years ago as a counsellor.

Liz Wilson

Liz Wilson - Iosis Board Member
Board Member
Liz has been working with the Baptist Union as Senior Accountant for the past 3 years

Case Study

A Day in the Life

of a Merivale Social Worker

A Day in the Life of a Merivale Social Worker

To be a social worker within a residential environment like Merivale comes with unique challenges, as the families must adjust to communal living during their stay.

While this can be daunting for the residents initially, the Therapeutic Community model that Merivale uses brings healing, connectedness and growth. Seeing this occur is one of the Merivale social workers’s richest rewards.

Read more