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Our Directors

Andrew Castle B&W.jpg

Andrew Castle

Andrew’s extensive experience in structural design has enabled him to lead many first class structural design teams in the commercial, residential, recreational and industrial sectors.

In 2007, Andrew founded ABC Consultants, which has developed into a successful engineering company with a highly regarded reputation for its structural designs and exceptional client service.

Andrew has become as an industry leader in several areas including post-tensioned design, concrete framed buildings, steel framed buildings and reinforced concrete pools.


Ryan Campbell

Ryan has over 20 years’ experience in successfully delivering the structural design of many of Australia’s highest profile and most challenging projects. He has significant experience leading design teams in residential, commercial, retail, education, deep excavation and mixed-use developments.

Ryan brings his widely recognised industry leading skills to a dynamic engineering practice that focuses on a hands-on approach to delivering projects and providing real value to their clients.

Prior to joining ABC Consultants, Ryan was a long-term Director of Bonacci Group and was responsible for establishing and running their Sydney, Parramatta and Brisbane offices with overall responsibility for all technical works undertaken in these offices which included their high-rise team

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