Professor Ho Lai Yun is the Founding Head of the Department of Neonatology (1986-2004) and is currently Emeritus Consultant, Singapore General Hospital (SGH). He is also the Founding Head of the then Child Development Unit (CDU), KK Women's and Children's Hospital (KKH) (1997-2008) and is presently senior consultant and Advisor of the Department of Child Development, KKH. Prof Ho started the CDU as the Development Assessment Clinic at SGH in 1991. He has been the Director, Child Development Programme, Ministry of Health, since 2002.

Prof Ho is Professor at the Duke-NUS Medical School, Singapore, and is currently the Academic Deputy-Chair, SingHealth Duke-NUS Academic Clinical Program (Paediatric Medicine). He is also Clinical Professor at the Yong Loo Lin School of Medicine, National University of Singapore (YLL-SoM NUS), and was the Associate Dean, SGH and Outram Campus, YLL-SoM, from 2004 to 2012.

He is a strong advocate of child welfare and protection, early childhood education and intervention. He has been actively involved in various community projects that address social and educational issues, such as child abuse and neglect, bullying in schools, parenting attitudes, pre-school education, and children with special needs. He plays a leading role in building an inclusive, family-focused and community-based early childhood intervention ecosystem in Singapore.