Our Executive Team

Dr Nathan Harman

Managing Director, CEO

Nathan has a successful history in the Australian IT sector. He started Harman IT in 1997 and by 2001 had won the whole IT outsourcing for Hamersley Iron and grown staff numbers to 120. In 2001 Nathan sold Harman IT to the London-based multinational Marconi plc. In 2004, Nathan founded Zetta and has managed its growth since. Developing Zetta, to a point where it is a significant exporter of services, is a particular passion.

Jim Di Menna

Company Director, Sales Director

Jim is a seasoned executive with extensive experience in the ICT industry and a director of Zetta.

He has held senior positions with large IT multinationals including CSC, HDS and Fujitsu and is highly experienced in professional sales and in pursuing and successfully negotiating large scale ICT outsourcing contracts across Australia.

Mark Vassallo

General Manager

Mark leads our Services divisions which encompasses End User Computing, Data Centre, Managed Services, Project Management and Solutions Architecture teams. Mark began his IT career in 1995 and has a long history delivering managed services to large corporates. Mark has worked with Diageo, Woodside Energy, Rio Tinto, Marconi plc, and Coles Myer in roles ranging from systems analyst, solutions architect and account management.