She has performed extensively on Broadway, Off-Broadway, regionally, and in various films and television series, and is known for her versatility and transformational character work in a number of world premieres.
While there, she was an active participant in Yale Undergraduate Theater,[3] where she first met Alex Timbers, with whom she has subsequently collaborated on a number of projects, most notably Here Lies Love.
She was also a member of the esteemed a cappella groups SHADES (whose alumni include fellow Broadway colleagues Anika Larsen and Lauren Worsham) and WHIM N' RHYTHM.
In summer of 2004, Oliveras was accepted into the Shakespeare Lab at The Public Theatre, where she studied with Ron Van Lieu, Kate Wilson and Michael Cumpsty, both of whom she later worked with on Broadway in Machinal.
In fall 2018, Maria-Christina returned to New Haven to co-star with Jennifer Paredes at the world premiere of El Huracan by Charise Castro Smith, a play directed by Laurie Woolery at the Yale Repertory Theater.
In October 2022, Maria-Christina began performances as Persephone in the North American tour of the Grammy- and Tony Award-winning musical Hadestown, directed by Rachel Chavkin.
[16] In January 2023, it was announced that Oliveras would return to Broadway as part of the cast of the Second Stage Theater revival of Stephen Adly Guirgis's Between Riverside and Crazy in the role of Church Lady, succeeding Liza Colón-Zayas.
Oliveras was the 2014 recipient of the Charles Bowden Actor Award from New Dramatists, whose previous honorees include Jessica Hecht and Lynn Cohen.