Our People

Office Executive

The Office Executive provides the leadership necessary for the Audit Office to achieve its strategic direction and goals, maintain its services and comply with relevant laws, codes and direction. The Office Executive is chaired by the Deputy Auditor-General and draws on the expertise of other staff and taskforces when required.

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• Peter Achterstraat

  Auditor-General
  BEc (Hons) LL B B.Comm FCA FCPA FCSA FCIS GAICD

• Peter Achterstraat was appointed the Auditor-General of New South Wales on 25 September 2006. Before joining the Office, he was the Chief Commissioner State Revenue for New South Wales from July 1999.

  Peter spent 20 years in the Australian Tax Office where he had a variety of roles, and was appointed Deputy Commissioner of Taxation with the Australian Taxation Office in 1987.

  Peter holds an honours degree in economics as well as degrees in law and commerce from the Australian National University. He was awarded the Australian Finance Conference prize for Company Finance, and the PricewaterhouseCooper prize for Accounting. In 2006, he was inducted into the Australian National University College of Business and Economics' Hall of Fame.

  Peter is a Barrister of the Supreme Court of New South Wales, and is a Fellow of the Institute of Chartered Accountants in Australia, a Fellow of CPA Australia, a Fellow of Chartered Secretaries Australia and a Fellow of the Institute of Public Administration Australia.

  Peter is currently the President of the Institute of Public Administration Australia (NSW Division).

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• Tony Whitfield

  Deputy Auditor-General
  B.Comm FCA

• Before joining the Audit Office in 1994, Tony Whitfield spent 29 years in the private sector, including 17 years as an audit partner in a ‘Big Four’ accounting firm. During that time, he was responsible for delivering audit and other services to a portfolio of clients, and for audit technology within the firm. Tony has also worked in the USA.

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• Louise Mooney

  Assistant Auditor-General, Corporate Services
  LLB FCA

• Louise Mooney commenced her accounting career with Price Waterhouse as a member of the audit staff before moving on to a wide variety of roles within both public and private sector service industries in Australia and overseas. Prior to joining the Audit Office in 2008, Louise was Finance Director at The Children’s Hospital at Westmead and two large Australian law firms.

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• Greg Gibson

  Assistant Auditor-General, Financial Audit
  B.Ec Grad Dip App Finance FCPA FCA F Fin

• Greg Gibson joined the Audit Office in 1973 and was appointed Assistant Auditor-General on 1 July 2006. Greg has significant experience with public sector financial operations and has been at the forefront of major accounting and financial reporting milestones.

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• John Viljoen

  Assistant Auditor-General, Financial Audit
  B.Acc CPA

• John Viljoen joined the Audit Office in 1996, after 18 years in the private sector. He spent nine years with a ‘Big Four’ accounting firm, where he was responsible for delivering audit services to clients in Australia and Africa.

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• Scott Stanton

  Assistant Auditor-General, Financial Audit
  B.Comm FCPA

• Scott Stanton has significant experience in leading the delivery of audit services to a diverse range of public sector clients including those in the transport, electricity and the university sector. He is the immediate past Chair of CPA Australia’s NSW Public Sector Committee and is currently serving on CPA Australia's NSW Divisional Council. Scott joined the Audit Office in 1987 and was appointed Assistant Auditor-General on 30 August 2010.

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• Rob Mathie

  Assistant Auditor-General, Performance Audit
  MA (Hons) MCP

• Rob Mathie rejoined the Audit Office in 2010 after ten years with Deloitte, where he worked on internal audits and performance reviews of government agencies across Australia. Rob joined the Audit Office originally in 1993 from the Audit Commission in England after an early career in consulting and public sector management.