Mr Hammond is a consultant and adviser to financial institutions, charities and not-for-profit organisations and has over 30 years' experience as a commercial lawyer. He was a member of the panel which reviewed the ACNC legislation in 2018 and he completed an independent review on access capital by cooperatives and mutuals in 2017. He was a partner of King & Wood Mallesons for over 27 years (1987–2014) and an Adjunct Fellow with the Applied Finance Centre at Macquarie University for over 20 years.
His current roles include being Chair of ACS and Olive Tree Media, and a director of Anglican Representative (National Redress Scheme) Limited, the Australian College of Theology, G&C Mutual Bank, the Glebe Administration Board, Opportunity International Australia and Sydney Diocesan Services. He is a member of the Synod of the Anglican Diocese of Sydney. He was appointed to the Board of ACS as its Chair on 1 July 2016.