Our Group

Our Group

The Ertech Group is a diversified engineering group with businesses operating across urban and regional areas throughout Australia. The Group is a long-term investor in new and emerging businesses focused on building Australian capability and capacity.

The businesses work independently or in partnership to design, construct, and manage projects and are trusted partners to clients across the oil and gas, mining, transport, defence, utilities, infrastructure, and building sectors. Collectively, we provide:

  • Civil construction
  • Electrical installation services
  • Nearshore marine construction
  • Ground improvement
  • Structural strengthening and remediation services

Employee ownership is the cornerstone of our business model and has underpinned the sustainable development of the Group, as employees are deeply invested in ensuring success with our clients.

Group Operations

In addition to Ertech’s national flagship civil and electrical operation, Ertech is a majority shareholder in Fortec, Geomarine, Groundex and, more recently, an investor in Yaraandoo, a majority Indigenous-owned contractor.

The Group is a shareholder in several other organisations, including listed entity, Duratec, one of Ertech’s earlier business investments that listed on the ASX in 2020.

Ertech is founding member of the Ertech Group and also established the Motivation Foundation, a charity that has grown from strength to strength and continues to invest in local youth by creating pathways into civil construction careers.

Group Construction Businesses

Ertech

Ertech is a national civil and electrical contractor delivering public and private infrastructure for the Transport, Resources, Defence, and Infrastructure sectors.

Geomarine

Geomarine is a locally based specialist contractor delivering near-shore marine solutions for the infrastructure, resources, and defence sectors.

Groundex

Groundex provides engineering ground solutions including pile foundations, piled retaining walls, and auger drilling for the resources, infrastructure, and building sectors.

Fortec

Fortec is a specialist contractor providing structural, geotechnical, and remediation services, from design through to construction and maintenance.

Yaraandoo

Yaraandoo is a majority indigenous-owned electrical and civil contractor providing solutions for government and private sector clients in Western Australia.

Ertech Group Board

Gavin Miller

Chairman

Gavin Miller is a Certified Practicing Accountant, Chartered Secretary, and graduate of the Australian Institute of Company Directors. He brings more than thirty years of financial and commercial management experience across manufacturing, utilities, and civil construction industries. Gavin currently serves as Chairman of the Ertech Group.

James Giumelli

Director

James Giumelli, a Civil Engineer and Harvard Business School OPM program graduate, oversees the national operations and strategic growth of The Ertech Group. Beginning his career with Ertech in 1993, he went on to deliver some of the company’s largest projects and gained international geotechnical experience before becoming CEO and Managing Director of the Group in 2008. James is focused on sustainable growth, innovation, and developing a strong people centred culture.

Jim Giumelli

Non-Executive Director

Civil Engineer Jim Giumelli founded Ertech in 1981 and continues to serve as a Non-Executive Director across the Ertech Group. He is passionate about providing opportunities for young people entering the industry and actively supports initiatives such as the Motivation Foundation and the University of Western Australia's (UWA) rural scholarship program. In 2017, Jim was awarded an Honorary Doctorate of Engineering from UWA.

Paul Depiazzi

Non-executive Director

Paul is a Chartered Accountant and Fellow of the Australian Institute of Company Directors with over 25 years’ experience in senior executive and board roles within large ASX listed organisations. He provides business consulting services and manages private investment companies, specialising in strategy, mergers and acquisitions, and corporate governance with a strong focus on shareholder outcomes. He also serves on multiple not for profit boards and committees.

Claire Giumelli

Non-executive Director

Claire has more than 15 years’ experience in the construction industry. She is actively engaged in charitable and philanthropic initiatives and has been involved with Motivation Investments and the Motivation Foundation since their inception. Claire is also a director of Australian Training Management (ATM). She holds postgraduate qualifications from the Curtin Graduate School of Business, the Australian Institute of Company Directors, and in philanthropy from Cass Business School, University of London.

Mike Best

Non-executive Director

Mike Best is a civil engineer whose 24‑year career at Wood & Grieve Engineers included nine years as CEO, leading the company through major expansion. A Fellow of the Australian Institute of Company Directors, Mike now contributes as a non‑executive director across several boards. He brings robust governance knowledge, broad industry experience, and a strong professional network.

Interested In Working With Us?

When you work with Ertech, you work with the owners of the business who are in it for the long game. 

If you’re looking to develop your company’s next civil or resources infrastructure project, our door is open, and we’d love to chat with you about how our company can assist.

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