Ms. Kajiya joined American Ballet Theatre's Studio Company in September 2001. She became an apprentice with the main company in 2002, and was promoted to corps de ballet in June. Ms. Kajiya was appointed a soloist in August 2007.
Her repertory with the company includes Kitri, Amour, and Flower Girl in Don Quioxte; Giselle, Zulma, and Peasent Pas de Deux in Giselle; Gamzatti,1st and 2nd Shade Variation in La Bayadere; Gulnare and Odalisque in Le Corsaire; Valencienne in Merry Widow; Clara/Grande Pas de Deux in Nutcracker (Ratmansky); Clara in Nutcracker (McKenzie); Olga in Onegin; Henrietta in Raymonda; Princess Florine, Lilac Fairy, Fervor Fairy, and Joy Fairy in Sleeping Beauty; Blossom in Cinderella; Pas de Trois, Cygnets, Polish Princess, and Hungarian Princess in Swan Lake; The Waltz in Les Sylphides; Tchaikovsky Pas de Deux; and leading roles in Ballo Della Regina; Brief Fling; Birthday Offering; Carmina Burana; Dark Elegies; Desir; Diversion of Angels; Dumbarton; In the Upper Room; Leaves are Fading; Petite Mort; Overgrown Path; Rabbit and Rogue; Seven Sonatas; Baker's Dozen; Chamber Symphony; The Tempest; and Theme and Variations.
In July 2014, Ms. Kajiya joined Houston Ballet as a First Soloist. On November of 2014 she was promoted to Principle Dancer with the company.
Her repertory with Houston Ballet is Manon in Manon, Giselle in Giselle (Welch), Nikiya in La Bayadere (Welch), Sugar Plum Fairy in The Nutcracker (Stevenson), Aurora and Lilac Fairy in The Sleeping Beauty (Stevenson), Bianca in The Taming of the Shrew, Ballerina in Paquita (Welch), and leading roles in Velocity, Tapestry, Zodiac, One and One, and The Letter V.
Ms. Kajiya was featured as 100 people to look up to in Japanese Newsweek. She starred in the 2007 documentary Passion Across a Continent in Japan. She also appeared on the Tokyo Talk Show and presented the American Ballet Theatre documentary Dancers. Ms. Kajiya has appeared in galas at the West Virginia Dance Festival, Santa Fe Ballet Festival, Roberto Bolle and Friends, Chicago Dancing Festival, Hopes and Pride Gala of Japan, New National Ballet Gala, and the Prix de Lausanne Gala. Ms. Kajiya appeared on the television show So You Think You Can Dance, dancing an excerpt from the Don Quioxte Pas de Deux in a live broadcast. In 2011, a 90 minute documentary entitled Yuriko: Ballerina appeared on national television across Japan. Ms. Kajiya appears as Kitri, in the DVD of Don Quixote from the ABT Japan Tour 2011. The government of Japan gave Ms. Kajiya an Artistic Ambassador Award in 2012. In September 2013, she met with the Prime Minster of Japan, Shinzo Abe, while he visited the U.N., to discuss Women's Rights within Japan. Ms. Kajiya is a member of the SpaceCraft Entertainment Agency.