Božidar Smiljanić made his professional début at Glyndebourne Festival Opera as Captain (Eugene Onegin) under Omer Meir Wellber and returned as Masetto (Don Giovanni) for the Glyndebourne Tour. He made his first appearance with The Mozartists (then Classical Opera) as Simone in La finta semplice in 2018. In his first professional seasons, he débuted at Garsington Opera as Haly (L’italiana in Algeri) under David Parry, at Scottish Opera as Schaunard (La bohème), with the Royal Liverpool Philharmonic Orchestra as Brander in Berlioz’s La damnationa de Faust under John Nelson and with the City of Birmingham Symphony Orchestra in Sullivan’s Yeomen of the Guard under John Wilson. He joined English National Opera as a Harewood Artist for their 17/18 season, singing Marquis (La traviata) and covering the title role in Le nozze di Figaro.