Current: Professor of Agricultural Engineering, Sokoine University of Agriculture, Morogoro Tanzania. Formerly: Director of Rural Infrastructure & Agro-industries Division, FAO, Rome, Italy [2001-11]; First Executive Director - ASARECA, Entebbe, Uganda [1995-2001]; Inaugural Dean, Faculty of Agriculture, University of Botswana, Gaborone, Botswana [1987-95]; Professor & Head of Agricultural Engineering Department, University bof Dar es Salaam/Sokoine University of Agriculture [1979/87].