CALLISTO


About Us


Dante DeWitt


Dante is a strategic business transformation leader with experience working with multiple Fortune 50 organisations as CIO / CTO and COO. He has founded multiple startups, some of which have gone public.


Dante was the EY Global Tax CTO, Partner and Global Technology Strategy leader responsible for envisioning and building the Global Tax Platform and EY Fabric that moved EY from #3 to #1 in Global Tax Services in 3 years.

John Lawler


John is a Global Technology leader. He was an EY Partner and Global Chief Delivery Officer.


John was instrumental in transforming EY into a globally capable organisation through the introduction of cloud enabled business platforms introducing advanced capabilities including Artificial Intelligence, Machine Learning and Robotic Process Automation.


John has extensive experience of global delivery across the Energy, Brands and Technology industries. 

Mark Stanton


Mark is a Global Technology Delivery leader. He has extensive experience directing and leading change across multiple industries and countries.


His background includes global platform delivery at EY, investment and commercial banking, insurance, manufacturing and telecommunications.


Mark has successfully led transformative initiatives to effect merger, demerger, business unit acquisition and divestment as well as for the creation of entirely new business capabilities.

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