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Isabel Duffy

Principal | Business Development Manager | Structural Engineer

Isabel leads business development for Northrop’s Sydney region. She brings a friendly and focused approach to forging meaningful client partnerships. Her ability to connect with people and build lasting partnerships sets her apart in the industry.

She is also a structural engineer who leads project delivery across residential, commercial, and public sectors. Some of her standout projects include the Zurich Tower in North Sydney, Wonderland at Central Park and Scape Darling Square. She’s a champion of collaboration, believing that the best solutions emerge from strong teamwork and open dialogue.

Isabel is passionate about thoughtful design, practical solutions, and empowering the next generation of engineers. She is one of the co-founders of Tomorrow’s Women In Construction, an industry-led organisation that helps high-school girls understand their career options in construction through stories of real women, education, resources, and visibility: “You can’t be what you can’t see.”

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Key Projects

Loreto Kirribilli

Scape Darling Square

Zurich Tower

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