Dr Megh Raj Tiwari joined the Nepal Agricultural Research Council (NARC) as a Scientist in 1999 and continued to work as a Principal Scientist at various research centers under NARC. He retired as a Principal Scientist from the Directorate of Agricultural Research, Koshi province, NARC, in 2021 after 22 years of government service. After that, he joined HICAST as a Professor of Animal Nutrition and has been teaching Animal Nutrition, Fodder Production, and Pasture Management.