Mahassine graduated in 2017 from the National School of Agriculture of Meknes in Morocco with an agronomic engineering degree. She undertook her graduation project at the National Institute of Agronomic Research (INRA-Morocco) where she worked on the optimization of the micropropagation techniques of date palm in the face of Bayoud disease in the moroccan oasis. After her graduation, Mahassine worked as a production manager in a date palm tissue culture laboratory. She was also a journalist for an agricultural news-magazine before joining University Mohammed VI Polytechnic (UM6P) as a lab manager for a year.
Mahassine is now a PhD student based at Rothamsted Research as part of the Rothamsted-Cranfield-UM6P partnership.