Your Network of Experts

Our Service and Sector Leaders are highly regarded in their respective fields of engineering. Bringing together creative, technical, and management expertise and their holistic approach to the design process is a significant aspect of the success of each project.

Meet the People Who Are Shaping GWE

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Gareth Williams 

Director

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Patrick O’Riordan

Technical Director

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Tobias Francis

Technical Director

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Colin Cranfield

Technical Director

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Robin Dawson 

Technical Director

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Emma Trembath

Technical Director – Environmental and Contaminated Land Services

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Maria Johnson

Drinking Water Services Leader

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John Petrovic

Land Development Services Leader

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Mona Liao

Principal Engineer, Water Resources

Geraint Walters

General Manager Waikato Office

Kevin Hyde

Senior Civil Engineer Waikato Office

Mark Mitchell

Principal Geotechnical Engineer

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Gareth Williams 

Director

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Colin Cranfield

Technical Director

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Robin Dawson 

Technical Director

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Emma Trembath

Technical Director – Environmental and Contaminated Land Services

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Patrick O’Riordan

Wastewater Manager

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Tobias Francis

Geotechnical Manager

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Maria Johnson

Drinking Water Services Leader

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John Petrovic

Land Development Services Leader

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Mona Liao

Principal Engineer, Water Resources

Geraint Walters

General Manager Waikato Office

Kevin Hyde

Senior Civil Engineer Waikato Office

Mark Mitchell

Principal Consultant Waikato Office