Duncan joined Eckersley O’Callaghan’s structural engineering team in 2014. He is known for his conceptual design and sketching skills. He has delivered multiple award-winning projects such as Apple Flagship stores, El Gouna Conference and Cultural Centre, The Ashworth Centre at The Honourable Society of Lincoln's Inn Fields, The Black & White Building and New Temple Complex. Recently, Duncan has focused on leveraging digital design tools for structural efficiency with the ‘Smart Massing Tool’ and the 'EOC ECO2' plugin for Revit. The latter earned his team recognition as the 'Net Zero Team of the Year' at the 2022 Construction News Workforce Awards.