[1] Following tenures as music director of the Opéra de Rouen and the Salzburger Landestheater, he has worked freelance conducting major orchestras and opera houses in Europe, and is Principal Guest Conductor of the George Enescu Philharmonic.
He has also conducted outside Europe, for example Capriccio by Richard Strauss at the Santa Fe Opera, as well as concerts in Japan, Australia, New Zealand and the USA.
[3] He served as an assistant to Simon Rattle at the Salzburg Festival, working with the Berlin Philharmonic which won him international recognition.
[3][4] Hussain conducted Tchaikovsky's Eugen Onegin at the Bavarian State Opera, Bizet's Carmen at the Royal Danish Theatre and Korngold's Die tote Stadt at the Théâtre du Capitole in Toulouse.
Productions at the Oper Frankfurt have included the double bill of Ravel's L'heure espagnole and de Falla's La vida breve, as well as Weinberg's Die Passagierin in 2015.