Our relationships are built on a platform of genuine care; we listen with open minds. We're accessible as well as adaptable - seamlessly becoming an important part of any project team.

Technical Leaders

Alex Ting

Senior Associate Geotechnical Engineer

Brendan Perrott

Associate Geotechnical Engineer

Colin Dailey

Principal Pavement Engineer

Daiquan Yang (Dr)

Senior Principal Geotechnical Engineer

David Glover

Senior Associate Geotechnical Engineer / Engineering Discipline Manager

David Haar

Associate Geotechnical Engineer

David Mangan

Technical Director Geotechnical and Pavements

Elmar Kaltenbach

Principal Geotechnical Engineer

Ganesh Manivannan

Principal Geotechnical Engineer

Helena Woolums

Principal Environmental Consultant / Environmental Discipline Manager

Iain Cowan (Dr)

Technical Lead Environmental - Atmospheric Science & Climate Change

Ian Johnston (Prof)

Senior Principal Geotechnical Engineer

James Allison

Senior Associate Enviromental Scientist

Luke Adams

Senior Associate Environmental Engineer

Lyn Denison (Dr)

Technical Lead Environmental - Human Health Risk Assessment

Martin Holliday

Principal Sustainability Consultant

Natasza Letowt-Vorbek

Circular Economy and Resource Recovery Consultant

Pablo Toro

Associate Geotechnical Engineer

Prasanna Punchihewa

Senior Geotechnical and Pavement Engineer

Rhian Owen

Senior Associate Environmental Scientist

Roger Olds

Senior Principal Geotechnical Engineer

Suk-yi Lo

Senior Associate Environmental Engineer

Sunny Singh

Senior Associate Pavements Engineer

Suresh Seetharaman

Associate Geotechnical & Pavements Engineer

Sze-Fei Peng

Principal Environmental Engineer

Tim Bradley

Principal Geotechnical Engineer

Travis Shreeve

Senior Principal Environmental Consultant

Trevor Smith

Senior Principal Engineering Geologist

Business Leaders

David Glover

Senior Associate Geotechnical Engineer / Engineering Discipline Manager

Helena Woolums

Principal Environmental Consultant / Environmental Discipline Manager

Andrew Homer

Company Accountant (Australia)

Ethel Akatos

Senior Health & Safety Advisor

Hannah Vaughan-Floyd

People + Capability Business Partner

Jonathan Nelson

Digital Discipline Director

Liandi Raath

Legal Counsel

Melissa Boyle

Business Support Coordinator - Team Leader

Nicole Neal

General Manager, T+T Australia; Director, T+T; and Director, Chadwick Geotechnics

Sharne Thomas

Strategic Business Development Director

Tim Chadwick

Director, T+T; and Managing Director, Chadwick Geotechnics