He is a graduate of the Music Academy F. Chopin in Warsaw in the singing class of prof. Kazimierz Pustelak. The artist received the first prize at the International Vocal Competition Viotti in Vercelli in Italy and the Audience Award at the Competition Alfredo Kraus in Las Palmas.
As a student, he began working with the Warsaw Chamber Opera, singing at the Wedding of Figaro and Don Giovanni by Mozart. At that time he also performed at the Grand Theater - National Opera in Warsaw as Don Basilio in Rossini's Barber of Seville. He has traveled abroad with ensembles of these theaters, including in Spain, France, Germany, Belgium, Switzerland and Japan.
Robert Gierlach performs on prestigious opera houses and concert stages in Europe, North America and Japan. He sang, among others on stages such as Teatro La Fenice in Venice, Teatro Filarmonico in Verona, Teatro Comunale in Bologna, Teatro dell 'Opera in Rome, Teatro dell' Maggio Musicale Fiorentino in Florence, Teatro G. Verdi in Trieste, Teatro alla Scala in Milan, Grand Theater in Geneva, Opera in Nice, Opera in Marseille, Theater des Champs-Elysees in Paris, Flanders Opera in Antwerp, Opera du Montreal, Opera in Ottawa, New York City Opera, Lyric Opera in Baltimore, Detroit Opera House, Arizona Opera, Cleveland Opera, Florida Grand Opera in Miami, Opera in Saint Louis, Theater in Cape Town (South Africa), cooperated with the National Philharmonic Symphony Orchestra in Warsaw, NOSPR, Sinfonia Varsovia, Berliner Philharmoniker, Wiener Philharmoniker, Orchestra of the Roman Switzerland in Geneva and Lausanne, Philadelphia Orchestra, Orchester National de France, I Solisti Veneti, City of Birmingham Orchestra, Rundfunk Sinfonieorchester Berlin, Dresdner Rundfunk Orchester, NHK Tokyo Orchestra. The artist has participated in many music festivals, including Opera Festival in Glyndebourne, Salzburger Festspiele, BBC Proms (Royal Albert Hall), Berliner Festwoche, Schleswig-Holstein Festival, Wratislavia Cantans, Mozart Festival of the Warsaw Chamber Opera. He collaborated with many well-known conductors such as: Sir Simon Rattle, Sir Yehudi Menuhin, Nello Santi, Charles Dutoit, Jeffrey Tate, Rafael Fruhbeck de Burgos, Vladimir Jurovski, Daniele Gatti, Vladimir Gergiew, Christian Thielemann, Jan Krenz, Kazimierz Kord, Jerzy Maksymiuk , Gabriel Chmura, Jerzy Semkow, Antoni Wit.