Dr Sayeedur Rahman is a Professor and former Chairman of the Department of English Language at the Institute of Modern Languages (IML), University of Dhaka. He received his PhD in English Language Teaching. He was also the Distinguished Visiting Fellow with the Advanced Research Collaborative (ARC) , City University of New York(CUNY). He has extensively worked as an ESL/EFL teacher and researcher for the last 22 years and has published widely in the areas of Second language acquisition, TESOL and Sociolinguistics. He has worked as a consultant and led several ELT projects with the Defence Services Command and Staff College (DSCSC), the Open University-UK, UNICEF, Dhaka Ahsania Mission (DAM), British Council and English in Action (EIA). He was the recipient of prestigious the Researcher Links fellowships from the British council, UK and worked as a Visiting Fellow at the Open University, UK. He was also a recipient of the American Centre’s fellowship for Professional Development for Teacher Trainer module from Arizona State University in 2018. Dr Rahman is a certified Master Trainer by the University Grants Commission (UGC) and the British Council, Bangladesh. He is also the founder and President of one of the largest Teaching Associations- TESOL Society of Bangladesh. His expertise and research interest include academic writing in ESL context, EFL syllabus design and materials development, socio-psychological study of EFL/TESOL, sociolinguistics, individual differences in language learning and EAP/ESP.