Mr. Maitland spent over 35 years with the ANZ Banking Group Ltd (ANZ), retiring in June 1997. He served the ANZ Group in New Zealand, United Kingdom and Australia. Amongst other positions, he was Chief Economist and then held General Management positions in Global Treasury, Retail Banking, Management Services and was Managing Director of ANZ in New Zealand. In his last six years, he was on the main board of the bank being Executive Director International. In this position, he was directly responsible for the Group's operations in 42 countries.

Today, he is a consultant to corporations and Governments and a professional company director. He is Deputy Chairman of the Victorian Schools of Innovation Commission and Chairman of Eastern Health Network Victoria, ComLand Ltd, Folkestone Limited, Mawson Capital Pty Ltd, Bevington Consulting Ltd and Australian Centre for International Business, University of Melbourne.