Ts.Dr. Siti Hajar Halili is an Associate Professor at the Universiti Malaya, Kuala Lumpur. She is also a Professional Technologist (Ts) from the Malaysian Board of Technology (MBOT). Currently, she is the Head of the Department of Curriculum & Instructional Technology. She was formerly with the Research Division, Prime Minister Department, Malaysia. She holds a Degree in Information System Management from the University Technology MARA, a Master's in Educational Technology, and a Ph.D. in Adult Education Technology from the University Sains Malaysia. Her works are published in ISI, SCOPUS, Malaysian and International journals. She has also published books and chapters in books. She has received awards such as the Deans’ Award, Best of Presentation Award, Excellent Service Award, Gold Award, The Most Outstanding Reviewer, Appreciation Certificate from Jabatan Pendidikan Selangor, and scholarships from MyBrain15 and USM Fellowship. She has broad experience in teaching and training in Instructional Design & Technology. She was Chief Editor of Jurnal Penyelidikan Pendidikan, and article reviewer for several journals and conferences. She is also appointed as the university open distance learning (ODL) expert, Programme Coordinator for the university ODL and Master of Instructional Technology program, Head of Auditor for the faculty of education, and one of the University Malaya Family Research & Development Center committee members. She is active in research and publishes in Instructional Design in Technology-Enhanced Learning (ID-TeL) (Flipped Learning & Open Distance Learning), Open Education and Digital Curriculum.