Professor Arnold Onyango Watako joined Jaramogi Oginga Odinga University of Science and Technology (JOOUST) as a Senior Lecturer in the School of Agricultural and Food Sciences in November 2013. Prior to joining JOOUST, he held various positions from Graduate Assistant to Senior Lecturer at JKUAT. Previously, Watako worked as a Research Officer with the Ministry of Agriculture, Kenya. Watako received his BSc. in Agriculture and MSc. Horticulture from University of Nairobi and PhD in Horticulture from JKUAT. In January 2015, Watako was appointed to the Chair of Department of Agricultural Economics and Agribusiness Management and promoted to position of Associate Professor in the same department in June 2016. From August 2020 to August 2022, Prof. Watako held the position of Dean, School of Agricultural and Food Sciences of Jaramogi Oginga Odinga University of Science and Technology.

Watako specializes in environmental horticulture, stress physiology, foliage plants, interior plants cape design, landscape planning, and management. His research includes control of flowering in summer flowers, optimization of cultural practices in floriculture and organic culture in summer flower production. He is a member of International Society of Horticultural Science, American Society of Horticultural Science and African Horticultural Society. Prof. Watako is a honorary member of New York Academy of Sciences He is a referee / editor to several Journals related to areas of Agriculture and Life Sciences.