Mohd Firrdhaus Mohd Sahabuddin is a Professional Architect registered with the Board of Architects Malaysia (LAM), a member of the education committee for the Malaysian Institute of Architects (PAM) and a graduate member of the Royal Incorporation of Architects Scotland (RIAS). He is also a graduate member of the Chartered Institute of Building Services Engineers (CIBSE) and the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). He gained his Master's degree in Advanced Sustainable Design from the University of Edinburgh and was later awarded the ‘Andrew Grant Award’ for the best dissertation in the University for the year. He then pursued his study at a PhD level at the University of Strathclyde, Glasgow with the British Government Sponsorship under the Commonwealth Scholarship Tenable in the United Kingdom. He worked with the Public Works Department (PWD) of Malaysia from 2005 to 2021. His last position was as the head of the Architectural Forensic Unit in the Architectural Branch, Public Works Department of Malaysia. Currently, he is holding a position as a Senior Lecturer at the Department of Architecture, Faculty of Built Environment, University of Malaya. His research work focuses on the areas of sustainable architecture and indoor environmental quality (IEQ) such as thermal comfort, visual comfort, indoor air quality, and building ventilation.