She began her studies at the age of 7 at the Valencia Center of Dance with Mari Cruz Alcalá and Inmaculada Gil Lázaro.

María José Sales won the Honour Price at the II National Contest of the City of Ribarroja (Valencia).

Professional degree at the English National Ballet School in 1996, with Alicia Markova.

María José Sales danced Swan Lake at the Concert celebrated in Memoriam of Princess Diana of Gales.

In 1999, she joined to Juan Carlos Santamaría, dancing all his repertoire included the work created for her: "Aariko" pas de deux.

In 2001 she joined English National Ballet. Her repertoire includes (principal and soloist roles): Fairy Good Mother, Oriental y Summer pas de deux (Cinderella); Crystal Fairy, White Cat y Jewells (The Sleeping Beauty); Moyna (Giselle); Sprite (Snow Queen); Arabian (The nutcracker); Big Swans, Cygnets, Spanish y Princesses (Swan Lake); Rosalyn's friend, Juliet's Friend (Romeo and Juliet), etc.

In April 2008 she left English National Ballet to join Corella Ballet, she was promoted to Soloist in 2009. Her roles with the company include: Odette/Odile in "The Swan Lake", Petipa and Ivanov's version, revised by Ángel Corella; Main Classical Couple in Twyla Tharp's In The Upper Room; Blue couple in Clark Tippet's Bruch Violin Concerto; Titania (A midnight summer dream); 3rd variation shadows Act II Makarov's Bayadère; Catalina de Aragón in Wheeldon's VIII; Main Couple in the 2nd movement in Angel Corella's String Sextet; 2nd woman in Fancy Free of Jerome Robbins.