[4] Prior to his Cabinet appointment, Jean De Dieu served as director of business planning and development at NPD Ltd, a construction company in Rwanda since January 2016 until July 2017.
[6][7] Between January 2014 and August 2017, Jean De Dieu served as a part-time lecturer for project management courses at the University of Lay Adventists of Kigali (UNILAK).
[8] Jean De Dieu was born on 8 January 1987; he grew up and completed his secondary education at Petit Séminaire Rwesero in Gicumbi, Rwanda.
In 2012, Jean De Dieu enrolled in the University of Manchester in England to pursue a postgraduate degree, and he earned master's in construction project management there in 2013.
[9][10] Following graduation from Petit Séminaire Rwesero in 2006, Jean De Dieu worked for a year as a mathematics, physics, and chemistry teacher at Lycée Muhura St Alexandre Sauli in Gatsibo, Rwanda.