[4] Mahjoubi was born in the 12th arrondissement of Paris to working class Moroccan parents[5] who emigrated in the 1970s from Afourar, Beni Mellal.

[11] Mahjoubi founded Equanum along with Guilhem Chéron and Marc-David Choukroun in 2010, a company which develops and gives farmers and artisans a dedicated Internet platform to sell their product.

[13] In September 2016, he founded the "French Bureau", a start-up company that aims to accompany major groups in their innovation process.

[16] Mahjoubi was nominated by President Hollande as Chairman of the Conseil national du numérique (French Digital Council) in 2016, succeeding Benoît Thieulin.

[18][19] On 6 April 2017, Mahjoubi was selected as candidate for the 16th constituency of Paris for the legislative elections, running under La République en marche!

[20][21] He ran against Jean-Christophe Cambadélis, the First Secretary of the Socialist Party, who had represented the district as lawmaker for 20 straight years.

[23] In a 2018 reshuffle of Philippe's government, Mahjoubi's department has been restructured; he now reports to Finance Minister Bruno Le Maire.