She has participated in masterclasses with renowned conductors such as Bernard Haitink, David Zinman, Zubin Mehta, and Pierre Boulez. Viliana Valcheva is a finalist in the prestigious international conducting competition in Cadaqués (Spain) and has been an active conductor in the Berlin forum "Das Kritische Orchester," composed of musicians from the most prestigious German orchestras, including the Berlin and Munich Philharmonics, the Bavarian Radio Orchestra, and the Dresden Staatskapelle.
In 2013, she began working as a répétiteur and assistant to the chief conductor at the opera theater in Lucerne, where she was engaged for three seasons. That same year, she was also selected for an internship in a new production at the Zurich Opera under chief conductor Fabio Luisi. In 2014, she was invited to become a permanent conductor at the Varna Opera House, where she led numerous new productions – Andrea Chénier by Giordano, Adriana Lecouvreur by Cilea, Norma by Bellini, Lucia di Lammermoor by Donizetti, Don Giovanni by Mozart, and many others.
Between 2008 and 2014, she was a scholarship holder of the "Zeno-Karl Schindler Foundation" (Geneva) for medieval German music and the "Richard Wagner Foundation" for studying Wagner’s works in Bayreuth and Venice. In January 2018, she debuted on the stage of the Francesco Cilea Theater in Reggio di Calabria with Verdi’s Requiem. Later that year, she successfully staged Bellini’s Norma. She has also conducted at the opera houses in Plovdiv and Biel/Solothurn (Switzerland), and took part in the “Knobelsdorff” ensemble affiliated with the Berlin Staatskapelle. Since 2021, she has been a permanent conductor at the Ruse Opera, and in January 2022, she made her debut with the Sofia Philharmonic. In July 2022, at the invitation of renowned Argentine tenor and conductor José Cura, she participated in the first edition of the "Palešak" Festival in Orebić, Croatia.
During the 2023/2024 season, Viliana Valcheva conducted the Bulgarian premiere of the musical The Addams Family as part of the "Opera Open" festival in Plovdiv, and also took part in the summer festival "Symfonia Umenia" in Bratislava, together with the Berlin Staatskapelle ensemble. In 2023 and 2024, she was again invited by the Sofia Philharmonic to conduct concerts featuring world-class instrumentalists such as the Japanese violinist Midori and cellist Anastasia Kobekina, performing works by Bernstein, Palmieri, Dobrinka Tabakova, Tchaikovsky, and Schumann. In May 2024, she was a jury member of the prestigious “Dimitri Mitropoulos” conducting competition in Thessaloniki.