Md. Rayhan Sarker is an Assistant Professor (On study leave) at the Institute of Leather Engineering and Technology, University of Dhaka. He received his Master of Engineering degree in Advanced Engineering Management from the Bangladesh University of Engineering and Technology (BUET) with 1^st class and M.Sc. in Leather Engineering degree with 1^st class and 2nd merit position from the Institute of Leather Engineering and Technology, University of Dhaka. He completed his B.Sc. in Footwear Engineering degree with 1^st class, 1st merit position from the Institute of Leather Engineering and Technology, University of Dhaka. His research works appear in various international journals like Resources, Conservation & Recycling (Q1, Elsevier), Benchmarking: An International Journal (Q1, Emerald), Journal of Intelligent Manufacturing (Q1, Springer), Measurement (Q1, Elsevier), Global Journal of Flexible Systems Management (Q1, Springer), Discover Sustainability (Q2, Springer), Global Business Review (Q2, SAGE), etc. His research interests include Sustainability, Circular Economy, Supply Chain Management, Waste Management, and Apparel. His Google Scholar profile is scholar.google.com/citations?user=GABp6KgAAAAJ&hl=en. He instructed several theoretical and laboratory courses both at undergraduate and graduate level, including "Circular Economy and Life Cycle Assessment," "Merchandising," "Supply Chain Management," "Product Design and Development," "Footwear Design and Pattern Making," and "Production Planning and Quality Control."