Jacques le Roux was born in Colenzo district Ladysmith, KwaZulu-Natal in South-Africa. He majored in Vocal Art under the guidance of Werner Nel at the Conservatoire of the North West University's Potchefstroom Campus. During his studies he won many competitions, bursaries and prizes of which the most acclaimed was a special price at the Fifth UNISA International Voice Competition in 2006 and the Vocal Category winner at the 2005 ATKV Muziq Competition. In his Native South Africa he sung numerous Student opera productions such as Le Nozze di Figaro and Die Zauberflöte (Aardklop production 2002; TUKS 2004), Die Fledermaus (TUKS 2005), Hänsel und Gretel, and Rita by Donizetti (Grahamstown International Arts festival 2006). He has also performed the African premiers of Werner Thomas Mifune's opera Die Nacht des Schicsals in 2003, and PDQ Bach's A Little Nightmare Music in 2006. During his studies he was the vocal coach of the PUK-University Choir of the North West University from 2002 till 2006. Jacques went abroad to the Netherlands in 2007 where he sung Pedrillo (Die Entführung aus dem Serail) in the Residence Artist Program in Enschede at the Nationale Reisopera.
He made his European debut in 2007 in the bel canto role of Don Ramiro at the Jeunesses Musicales Weikersheim Schlossfestspiele production of Rossini's La Cenerentola in Germany. He was there after employed by the Kammeroper München for the opera season 2007/08 where he performed Don Polidoro in Mozart's La Finta Semplice and Il Cavaliere Armindoro in Nicola Piccinni's La Buona Figliola ossia La Cecchina. In opera season 2008/09 he was employed by the Südthüringische Staatsoper in Meiningen where he sung Nemorino in L'Elisir d'Amore, Camille de Rosillon in Die Lustige Witwe, Andres in Wozzeck, Sou-Chong in Das Land des Lächelns, Walter von der Vögelweide in Tannhäuser and Adam in Der Vogelhändler. In 2010 he was honoured by the Deutsche Bühne Theaterverein with the Ulrich-Burchardt-Förderpreis as Young Artist of the year 2010.
He has sung under international conductors such as Alessandro di Marchi, Dennis Russel Davis, Patrick Lange, Hans Urbanek, Alexander Steinitz and Jeremy Silver. As a concert singer, Jacques has performed many major oratorios internationally. As a song interpreter he has obtained a reputation as a "Musical event of Excellence" (Süd-Deutsche Zeitung). He has given recitals in South Africa, Namibia, Germany, Netherlands, Belgium, Austria and Czechia. He has recorded all the Canzone di Camera of both Bellini and Verdi, produced by the Staatsoper Meiningen.
He is closely associated with renown South-African composer Martin Christopher Watt who has dedicated many of his vocal works to him. He has also performed the World Premiers of some of these songs, namely Four Mtsali Songs with the Chamber Orchestra of South Africa (Aardklop 2005) and Doodsgedigte van Eugene Marais (Aardklop 2006 & Netherlands Zuid-Afrikaanse Kunstliederen Festival 2007).
He has made many Radio and TV recordings internationally throughout his career. As from Opera Season 2010/11 he is an ensemble member of the Landestheater Linz (Upper State Theater Linz) in Austria. Here he made his debut in the role of Gerald in Lakmé to great success, and recently sang Don Ramiro in Adriana Altaras' production of La Cenerentola.