With a powerhouse of cross-sector expertise, our company is – built on strong, enduring client relationships and industry experience. We pride ourselves in being innovative while maintaining safety standards that exceed expectations; this sets us apart from the competition.


John Horne – CHAIRMAN

John has worked in the exploration, geotechnical and mining industries for over 45 years. He has vast international experience having managed dozens of projects throughout Europe, the Middle East, South America and Southeast Asia. John is an expert of all forms of land-based operations as well as over-water rigs including barges, jack-up rigs, drill ships and purpose-built vessels. John has extensive managerial expertise in the mineral drilling industry and relies on his experience to advise the Group on its operations and business expansion.


Jason Lee – CEO

Jason is a commercial lawyer with over 20 years’ experience in the mining and banking sectors, with his most recent role being Corporate Advisor to The GDE Group. Prior to that, Jason spent considerable time at Avocet Mining, JP Morgan Chase and Bank of America. His skillsets include corporate advisory, mergers and acquisitions, business development, regulatory compliance, dispute resolution and HR management. Jason’s previous experience includes working on large international projects for both public and private companies operating throughout North America, Europe, Africa, Asia and Australia. Jason brings this vast and diverse experience to the GDE Group, with a focus on expanding the business globally and guiding the group towards being a leader among its peers.


Chris Stephenson – CFO

Chris has over 27 years’ experience within the mining industry for both contractors and mining groups covering all aspects of Finance, Accounting, Administration, Contract Management, Supply and Logistics, Human Resources, IT, Camp Management and Business systems. During that time Chris has thrived at senior management level leading and driving continuous improvement to increase business effectiveness and efficiencies across the Asia and the Pacific region including Indonesia, Thailand, Laos, New Caledonia and Malaysia.


Andrew Koch – GM Operations Asia


Matt Semmens – GM Operations Australia


Phil Taylor – GM Group Tech Services


Aidu Talib – Head of Legal


Ben O’Malley – Head of Business Development