Senior management


The Department is managed by the Senior Executive Group (SEG), led by the Secretary. Collectively, SEG has significant public and private sector management experience in the areas of economics, finance, people management and technology.

David Martine is Secretary, Department of Treasury and Finance

David joined DTF as Secretary in February 2014. Prior to joining DTF, David worked as a senior executive in the Commonwealth public sector providing strategic advice to governments on a range of complex economic and other policy issues. He has extensive budget, finance, policy and organisational leadership experience, and has been involved in wide ranging strategic policy reform.

David was educated in Melbourne and has an honours degree in economics from Monash University. He completed his Master of Business Administration in 2005.

Melissa Skilbeck is Deputy Secretary, Budget and Finance Division

Melissa's role includes providing advice on the State's fiscal resources and its responsible financial management and consolidated reporting, and on workplace relations. She has held this role since August 2012.

Melissa re-joined the public service in February 2011 to head the Secretariat for the Independent Review of State Finances, supporting the Victorian Government appointed Panel. During 2012, Melissa was the Deputy Secretary, Resource Management Reform. Melissa has consulted to Australian governments, regulators and government businesses on public policy and administration as a director of the Allen Consulting Group and a partner in the economics and strategic advisory practice of Deloitte. 

She has a Bachelor of Commerce (Honours in Economics) from the University of Melbourne, and is a Victorian Fellow of the Institute of Public Administration Australia.

Mark Johnstone is Acting Deputy Secretary, Economic Division

Mark is responsible for the provision of high level policy advice and economic analysis to the Government on taxation, economic, social, environmental and regulatory issues. Mark joined DTF in 2006 as Adviser to the Secretary and then as Assistant Director for competition and regulation reform. He is currently Director of the Economic Policy Group.

Prior to joining DTF, Mark worked in a variety of senior roles in the Department of Education and Early Childhood Development and the Commonwealth Department of Education, Training and Youth Affairs.

David Webster is Deputy Secretary, Commercial Division

David is responsible for providing high level and innovative commercial, financial and risk management advice to the Government including a focus on major infrastructure and the State’s balance sheet.

David commenced as Deputy Secretary in November 2011 and has more than 20 years’ extensive international corporate and commercial senior management experience specialising in economic infrastructure and public private partnerships as a fund manager, equity investor, financial adviser and lender.

Prior to joining DTF, David worked for RBS Funds Management in Sydney as Executive Director and Chairman of RBS Funds Management (Australia) Limited. Previously, David was Investment Director at EISER Global Infrastructure Fund in London and Head of Infrastructure Advisory at RBS London.

He has a Bachelor of Commerce from the University of Queensland and a Masters of Business Administration from London Business School.

Gayle Porthouse is Deputy Secretary, Corporate and Government Services Division

Gayle is responsible for the efficient delivery of financial, people, information, legal, planning, procurement and technology services to DTF, which supports the Department to achieve its objectives and capacity to serve government.

She is also responsible for the management of whole of Victorian Government services provided to departments and agencies, including the development of policies and initiatives to achieve continuous improvement in facilities and real estate management, procurement and strategic sourcing.

Before joining DTF in July 2014, Gayle worked at the Department of Premier and Cabinet as Executive Director, Governance and Operations group and has more than 30 years experience in the public service.