Koorosh has worked as an academic (+12 years) and Professional Engineer (+6 years) in both Public and Private sectors. He has been employed in various Municipalities and some large private organisations, specialising in Heavy Construction. His past projects varied from High Rise Buildings to Civil Construction including Roads and Bridges. He is currently involved with the Department of Economic Development, Jobs, Transport and Resources [formerly known as the Department of Transport, Planning and Local Infrastructure] (Melbourne, Australia), as a Senior Technical Advisor working on various Victorian Infrastructure projects.

In addition he is a registered research supervisor (supervising PhD students), and his areas of interest include (Listed as a Media Expert on the RMIT Expert Guide): Infrastructure Engineering and Management, Heavy Construction Engineering, Steel Engineering and Construction (including Modular Construction and Fabrication), Composite Materials in Construction, Structural Analysis and Design, and Seismic Rehabilitation of Existing Structures. He is also a Paper reviewer for assorted International Journals and Conferences. Furthermore, he conducts various independent short courses for the professional bodies such as John Holland, VicRoads etc.