Leadership 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

Merivale Manager
Merivale Manager

Wendy Barthow

Service Development Manager
Service Development Manager

Board of Directors

Andrea Page, Chair

Andrea has been working in the social service sector since 1992.  Her time at Iosis began in 2017 when she initially came onto the board. She was made chair in 2021.

When we work together with love, respect and courage we understand what it is to be family. The staff at Iosis work hard to provide people with the tools to realise this for themselves, and I am proud to serve on the board of this organisation.
Andrea Page

Bonnie Robinson

Board Member
BA, BD, BAppMgt
Bonnie Robinson is CEO at HBH Senior Living Care & Village.

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.

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