Marc left the Australian Public Service in 2024 after a 31-year career that culminated as a Deputy Secretary within the Australian Department of Home Affairs, where he held responsibility for various portfolios, including strategic guidance and capability planning; national security policy; international relationship management; immigration policy; law enforcement policy and electronic surveillance reform; data and biometrics policy; regional processing and resettlement; intelligence; critical and emerging technology policy; cyber security policy; national resilience and strengthening democracy.
Before joining the Department of Home Affairs, Marc was a senior executive with 25 years within the Australian Department of Defence, where he held positions in capital equipment & acquisition policy, international policy, military strategy, maritime capability development, Air Force long-range planning, futures, and scenario-planning; national support and mobilisation planning, information strategy and futures, strategic reform; Defence strategic policy; Defence industry policy; corporate governance; media and ministerial coordination; contestability and naval shipbuilding policy.
Marc is a graduate of the Joint Services Staff College (1997), the Centre for Defence and Strategic Studies (2002) and the Advanced Management Program 190 (2016) at the Harvard Business School. Marc was awarded the Public Service Medal in the 2018 Australia Day Honours.