A former acting chief executive of Victoria's Environment Protection Authority, Terry A'Hearn, is to lead a similar agency in Belfast from next month.

Mr A'Hearn's new role as chief executive officer of the Northern Ireland Environment Agency will involve responsibility for an annual budget of £57 million ($A90 million) and a staff of 800.

A former EPA deputy chairman and head of sustainability at the agency, Mr A'Hearn has been based in London working for the international environmental consultancy WSP Environment and Energy for the past two years.

The new role, which Mr A'Hearn takes on from November 19, covers a wide range of duties, including oversight for environmental protection, heritage sites including castles, and waste management.