Dark has performed with Opera Australia, Victorian State Opera, was young artist for Opera Queensland in 2000, performed at the Vienna State Opera the roles of Giovanna, Grimgerde, Annina, Mercedes, and Il Pastore in Tosca. Her 2013/2014 Opera Australia schedule included Emilia, Donna Elvira, Filippyevna in Eugene Onegin, Meg Page in Falstaff, Lady Billows in Albert Herring and Fricka in Der Ring des Nibelungen.She has performed the alto solos in Rossini's Stabat Mater for the West Australian Symphony Orchestra. In 2012, Jacqueline Dark sang Herodias in Opera Australia's new production of Salome and won the Green Room Award for Outstanding Principal Female in Opera as Donna Elvira in Don Giovanni. Her performance experience encompasses opera, music theatre, cabaret, theatre restaurant and the concert platform; it includes the roles of The Composer, Carmen and Mercedes, Dorabella, the title role and Tisbe in La Cenerentola, Suzuki, Rosmira, Donna Elvira, Second and Third Lady, Marcellina, Maurya, Mrs Herring, the title role in Iolanthe, Maddalena, Emilia, Lucilla, Marianna, Flora, Annina, Pitti-Sing/Katisha and Mary. Dark performed the role of Sally Lowe in the world premiere of Lindy and the title role in Iolanthe for Opera Australia, and covered the role of Pearl in the world premiere of Richard Mills' Summer of the Seventeenth Doll. She appeared as a soloist with groups including the Melbourne Chorale, the Australian Opera and Ballet Orchestra, Orchestra Victoria, the Australian National Academy of Music, the Royal Philharmonic Society and the Queensland Symphony Orchestra. She joined the Tasmanian Symphony Orchestra along with Trisha Crowe, Michael Falzon, Amanda Harrison and others to record I Dreamed a Dream: Hit Songs from Broadway for ABC Classics in 2013.
Among Dark's awards and major prizes are two Green Room Award for her role of Tisbe in Opera Australia's La Cenerentola and as Donna Elvira in Don Giovanni in 2011, an overseas study grant by the Australian Elizabethan Theatre Trust, the Vienna State Opera Award, 3rd place in the Metropolitan Opera National Council Auditions finals, as well as a finalist in McDonald's Operatic Aria, Herald Sun Aria, National Liederfest, Covent Garden National Opera Studio Scholarship. She has won the Ringwood Aria 1997, Geelong Aria, Fletcher Jones Memorial Aria, Shell Aria, Victorian Theatre Guild Award , Encore Award for Performance of Excellence. Dark won the award for Best Female Performer in a Supporting Role in an Opera at the 2013 Helpmann Awards for her role as Herodias in Opera Australia's Salome. and nominated in the 2014 Helpmann Award Best Female Performer in a Supporting Role in an Opera category for The Melbourne Ring Cycle. Dark launched the 2007 season at Her Majesty's Theatre in her home town of Ballarat as Dorabella in Così fan tutte.