Leadership Team

Leadership Team

Interflow employs over 550 personnel, many of whom have worked for the Company for in excess of 20 years. Some 60 are degree qualified civil, mechanical or environmental engineers.

The specialised nature of Interflow’s work means that the company invests heavily in in-house training and on-the-job learning not offered elsewhere in this field.

The Company’s background has meant that it has retained highly experienced Engineers and Project Managers who have been valuable in developing safe and effective work practices in the highly specialised field of “trenchless” pipeline rehabilitation. Their experience is passed to employees involved on our projects.

Chief Executive Officer & Managing Director: Geoff Weaver

Geoff is an Executive Director who commenced in 1976 and in 1990 assumed the role of Managing Director.


Geoff is responsible for leadership of the Group within its domestic and international footprint. He is accountable for the achievement of Interflow’s strategic objectives through the development and successful execution of market & product growth strategies.


With over 40 years of experience in civil construction and pipeline renewal, Geoff is considered an industry leader and pioneer of trenchless technology. In 1990 Geoff was responsible for the successful re-invention of General Constructions into the current Interflow group with the commercialisation of emerging technologies in trenchless renewal of pipelines and underground structures.

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Non-Executive Director: Paul Borg

Paul is a Non-Executive Director who commenced with Interflow in 2003 as Director Corporate Services and in 2016 was appointed the role of Deputy Chief Executive Officer. In 2018 Paul was appointed as a Non-Executive Director.


Paul brings to the group over 45 years of experience in general management, governance and financial management.

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Executive General Manager - Operations: Michael Weaver

Michael is an Executive Director who joined Interflow in 1996 and appointed Operations Director in 2000. In 2018 Michael was appointed Executive General Manager - Operations.


Michael is responsible for the delivery operations of Interflow across Australia & New Zealand. He has a focus on the safe delivery of field works and reducing the impacts of our activities in the environment and the communities we work within.


Having more than 20 years of construction and management experience Michael successfully leads the group’s operations management in efficient and cost effective contract delivery.

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Executive General Manager - Operations: Daniel Weaver

Daniel is an Executive Director who commenced with Interflow in 2003 holding progressively senior roles towards his appointment in 2018 as Executive General Manager - Operations.


In addition to his role as Executive General Manager - Operations, his scope of responsibility includes Product Support and Development.


Daniel has over 13 years of project management and technical experience and has formal engineering qualifications.

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Executive General Manager - Business Information: David Lilley

David is an Executive Director who joined the company in 1984 and has held senior positions within the group including General Manager & Director of Business Development from 2002. In 2016 David was appointed the role of Executive Manager Client Services and in 2018 appointed as Executive General Manager - Business Information.


David is in charge of our client interface that results in positive long term relationships with our industry partners and the marketplace.


With over 35 years of years of industry experience, David has a reputation of delivering successful client outcomes balanced against the experience and capabilities of Interflow. He has demonstrated a commitment to working with clients to develop value based procurement models that reduce risk while maximising programme and delivery outcomes.

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Executive General Manager - Corporate Services: Graham Reid

Graham is an Executive Director who joined Interflow in 2015 and was appointed Executive General Manager - Corporate Services in 2018.


In his role Graham is responsible for long term strategic planning, economic regulatory affairs, customer insights, business development, community and stakeholder engagement and communication programs.


Graham brings over 25 years of experience in the banking and professional services industry in Australia and overseas, having held a number of senior leadership roles at NAB, ANZ and Deloitte.

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Executive Manager - Commercial and Risk Management: Jason Marshall

Jason Marshall was appointed as Executive Manager – Commercial and Risk Management in 2018. Jason commenced with Interflow in 2006, during which time he held positions in business development and tender management, proving himself to be a committed company advocate.


Jason is responsible for the improvement of the bid management process, creating a business model of metrics and standards on performance reporting and developing strategies to maximise market opportunities for Interflow. His ability to motivate his team has led to his continued success at Interflow.


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Executive Manager - HSE: Adrian Smith

Adrian Smith commenced with Interflow in September 2017 as the Executive Manager - HSE.


The primary role of the Executive Manager - HSE is to provide leadership and strategic planning to allow the integration of HSE across Interflow's operations.


Adrian has over 14 years’ experience in senior safety roles from various industries such as automotive, warehousing, logistics, manufacturing and Government.

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