Jayaraman is a biotechnology and plant-microbiology professor at The University of the West Indies (UWI), Trinidad and Tobago (TT). He has completed over 25 funded research projects and published over 125 refereed publications. He has received several awards including UNDP-CARUTA Research Award; UWI Vice-Chancellor's Excellence Award for Outstanding Research Accomplishments; Accreditation Council of Trinidad and Tobago Award, Government of TT for Outstanding Achievements in Applied and Academic Research; and Environmental Management Authority-TT- Greenleaf Award. He is a DST-BOYSCAST Fellow, and an elected Fellow of the Indian Phytopathological Society. He served as advisor to UNU-BIOLAC programme of the UN. He serves as plant protection advisor to programmes for several Caribbean states. A lead trainer for integrated disease/pest management (IDM/IPM) techniques for the Caribbean region, his research projects cover diverse topics focussing on sustainable agriculture including biological control, disease diagnostics, plant-microbe interactions, elicitor-biomolecules, induced disease resistance, seaweed-based products, genetic engineering of plants for biotic stress tolerance, etc.