Born in Lebanon, Mohamed Haidar obtained a first Bachelor degree in Computer Science at the American University of Beirut, before studying singing at the National Conservatory of his country in the class of Kévork Karamétélian. He pursued his studies at the Conservatoire de Lyon and then at the Haute école de musique de Genève, in the class of Marcin Habela, during which, he received the Colette Mosetti Foundation Scholarship in 2015. At the Opéra de Lausanne, he made his debut as Ramirez in La belle de Cadix by Francis Lopez (2016). At the Grand Théâtre de Genève, he made his debut with the role of Mendiant in the world premiere of Camille Saint-Saëns' Ascanio (2017). Other roles he played include: Il conte Almaviva in W.A. Mozart's Le nozze di Figaro, Belcore in G. Donizetti's L’elisir d’amore, Podestat in Georges Bizet's Le docteur miracle, Fauteuil and Arbre in Maurice Ravel's L'enfant et les sortilèges, Mutter in Die sieben Todsünden by Kurt Weil. He has sang under the baton of conductors such as Guillaume Tourniaire, Leornardo García Alarcón, Frank Beermann and Jacques Blanc. In concert, he performed in Johannes Brahms 'Liebeslieder, Camille Saint-Saëns' Requiem, Joseph Haydn's Missa in tempore belli, Johann Sebastian Bach's St. John Passion and several cantatas. He is currently pursuing a concert master at the Haute école de musique de Lausanne in the class of Stephan MacLeod.