4th Harmonic • The Team
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The Team

Who we are

Our leadership team comprises three like-minded people with different and complementary skill sets who apply their expertise in fields ranging from military operations to data engineering to solve your problem.

DTC Member
Mat Hunter

Mat Hunter

Co-Founder & Managing Director

Mat Hunter is a graduate of the Royal Military College, Duntroon. As an army officer for more than 15 years, he removed barriers and led teams in some of the world's most complex places.

It was a grounding invaluable in his industry career as an ASC executive team member, where he applied his skills to managing people, IT, facilities, infrastructure and cybersecurity; and in senior operations and business development roles at two global shipbuilding companies.

Charles Carnegie

Charles Carnegie

Co-Founder & Chairman

Charles Carnegie is a mechanical engineer and technologist who moved from software development in the US and Australia to executive recruitment and leadership development. For 20 years he has helped boards and senior management implement fit-for-purpose governance, management and leadership strategies. He is the author of the internationally published Network Centred Leadership: How to lead in an increasingly complex and interconnected world, and a trustee of private equity investor The Nature Conservancy Australia.

Recently, Charles applied his deep understanding of digital technologies and data analysis to develop MAXWELL, the proprietary tool at the heart of our investigative and analytical process.

Steve Ludlam

Steve Ludlam

Associate, Senior Advisor

Former ASC Chief Executive Steve Ludlam is a leader of complex engineering programs in the marine and nuclear sectors. Before moving to Adelaide to join ASC, Steve was president of Submarines at Rolls-Royce plc in the UK, leading the modernisation of the country's nuclear-powered submarine program.

Steve holds a master's degree in nuclear engineering from the Royal Naval College, Greenwich, UK. He has been voted one of Engineers Australia's 100 most influential engineers four times.

Since leaving ASC Steve has joined Mat and Charles at 4th Harmonic, broadening its strong industry and defence related expertise.

Gavin Hamilton

Gavin Hamilton


Gavin is an experienced professional with an extensive career spanning diverse roles related to information technology (IT), operational technology (OT), complex systems engineering, project management, and cyber security in both technical and senior leadership roles. He has worked in many industry sectors including defence, manufacturing, high technology, warehousing, and logistics managing projects for international and national organisations implementing innovative high technology products and change.

Gavin's formal educational qualifications are comprised of a Bachelor of Science (B.Sc.) in the Faculty of Mathematical Sciences from the University of Adelaide and a Master of Engineering in Military Systems Integration from the University of South Australia. He is a Senior Member of the Australian Computer Society.

Tom Radford

Tom Radford


Tom Radford is an experienced leader and manager who commenced his working career on the family farm in the mid-North of South Australia, then trained in tax and insolvency accounting before joining the Army and graduating from the Royal Military College, Duntroon.

Tom has excellent analytics skills and is recognised for his ability to develop systems to manage the transition of new technology and equipment into organisations.

He holds a Bachelor's Degree in commerce from the University of Adelaide; a Master's Degree in Business from the University of New South Wales and a Diploma of Public Safety (Military Leadership).