Dr. Msolla holds a Ph.D. in Soil Science (majoring in soil chemistry and soil fertility). Dr. Msolla has worked for several years in the agricultural sector in the Government of Tanzania, several NGOs, donor-agencies, and the private sector. He has worked as a researcher, agronomist, agricultural adviser, assistant director and director at the Ministry of Agriculture, a board member on various boards (cotton, smallholder tea farmers, SUA Council, Tanzania Fertilizer Company), chairman of Tanzania Fertilizer Regulatory Authority board and AFAP Country Manager for Tanzania.

During his tenure at the Ministry, he was instrumental in formulating the Fertilizer Act and its regulations of 2011. While working with AFAP, he participated in the formulations of the regulations of 2017. He has made several presentations in most international meetings involving agricultural inputs related issues (technical and policy) and soil fertility. He has also been the OCP Tanzania Country Manager. He is currently working with Minjingu Mines and Fertilizer Limited as an Agronomist.