[1] Valdés developed a reputation as a dancer for her interpretations of the female lead roles in the ballets, Carmen, Giselle, Swan Lake,[2] Blood Wedding, Don Quixote,[2] Romeo and Juliet, The Sleeping Beauty, Cinderella, Coppélia, La Fille Mal Gardée, and The Nutcracker.

[3] She also danced in notable pas de deux from Le Corsaire,[4] Diana and Actaeon, Silvia, and Black Swan (El Cisne Negro).

In July 2012, she performed in the special Homage Gala dedicated to Alicia Alonso, sharing the stage with The Royal Ballet of London in the Gran Teatro de La Habana.

[2] A few days ago, someone gave me a filmed version of 'Swan Lake', a subject about which I am far from being an expert, but which in the current circumstances constitutes a very agreeable way of forgetting almost all the time.

I observed for almost two hours the incredible performance of the greatest interpreter of this ballet in the world: Viengsay Valdes, daughter of a Cuban diplomatic couple, who gave her the name in honor of a region of Laos where they were representing Cuba.

[18]"Two exceptional young dancers, Joel Carreño and Viengsay Valdés, led the exuberant version of "Don Quixote" that opened a run by the Ballet Nacional de Cuba on Wednesday, continuing through Sunday at City Center.

Alicia Alonso, now 82, was on hand for a standing ovation at the end of the evening, and it is worth remembering that the company is an outgrowth of the troupe she founded in 1948 in Havana with members of American Ballet Theatre, where she was a star.

[21] In January 2019, Valdés was advanced by the Cuban ministry of culture and Alicia Alonso to the role of Deputy Artistic Director of the National Ballet of Cuba.

In April 2009, the Union of Artists and Writers of Cuba (UNEAC) awarded her the Dance Prize for outstanding female performance during the 2007–2008 season.