El Naji Abderrahmane is a professional in their field. Colleagues describe them as "Ladies and gentlemen, First of all, before passing on to you the professional particulars of Mr. El Naji ABDERRAHMANE, I would like to mention that I was very happy to learn and to collaborate with him. Mohamed CHEIKH SIDIYA, university student in master's degree in geotechnical engineering, I studied with Mr. ABDERRAHMANE, in high school, I shared with him the same class, exercises, research and the same aspiration. He was always diligent, intelligent, distinguished in his character, passionate about his contributions, a respectable student and a good person. So, with all my best wishes to you and him for progress and success, and with certainty and sincerity, I've the honor to advise you to add him to your honorable team. Cordially." and "Objet : lettre de recommandation Madame, Monsieur, Durant toutes les années que j'ai connu monsieur EL Naji , il a réalisé un travail tout à fait satisfaisant en faisant preuve d’un réel professionnalisme. Rigoureux, flexible, doté d’un sens avéré des responsabilités et apprécié par tous ses collègues, et ses professeurs. Je me tiens à votre entière disposition pour vous donner plus de renseignements, je vous prie de croire, Madame …, Monsieur, en l’assurance de mes salutations les plus distinguées. "