Cassie M. Seinuk is a Jewish Cuban playwright, AEA stage manager, visual artist, and educator based in Boston, MA. Her plays wrestle with survival, what people do when pushed to their limits, and explore the intersections of trauma, memory, and relationships. She creates work that feels raw and intimate while bursting with theatricality and magic.
Her play From the Deep won the Pestalozzi Prize, the Latinidad Playwrights Award at the Kennedy Center, and the Boston University Jewish Culture Endowment, and appeared on the 2015 Kilroys Honorable Mention List. The Boston Public Works production nearly sold out, and the New York International Fringe Festival run in 2016 played to packed houses and earned IRNE Award nominations.
Her play Eyes Shut. Door Open. (“ESDO”) won the 2016 OnStage...
Cassie M. Seinuk is a Jewish Cuban playwright, AEA stage manager, visual artist, and educator based in Boston, MA. Her plays wrestle with survival, what people do when pushed to their limits, and explore the intersections of trauma, memory, and relationships. She creates work that feels raw and intimate while bursting with theatricality and magic.
Her play From the Deep won the Pestalozzi Prize, the Latinidad Playwrights Award at the Kennedy Center, and the Boston University Jewish Culture Endowment, and appeared on the 2015 Kilroys Honorable Mention List. The Boston Public Works production nearly sold out, and the New York International Fringe Festival run in 2016 played to packed houses and earned IRNE Award nominations.
Her play Eyes Shut. Door Open. (“ESDO”) won the 2016 OnStage Critics Award for Outstanding New Work and received the Bob Jolly Charitable Trust Grant. Dream House was developed through the Next Voices Fellowship at New Repertory Theatre and later at The Nora Theatre Company. It was a finalist for Bay Street Theater’s Title Wave Festival in 2023 and for the Mass Cultural Council Fellowship in 2017. Her trilingual play Una Me Da Leche was a Semi-Finalist for the Eugene O’Neill National Playwrights Conference and received readings at Boston Conservatory at Berklee and the Boston Center for the Arts’ Festival of Women’s Voices. Most recently, Meet Me in the Bathroom was workshopped at Moonbox Productions’ Boston New Works Festival in 2024 and was a finalist for The Playwrights’ Center Core Writer Program (2023–26).
Cassie’s short plays have also had a wide reach. Occupy Hallmark won the Gary Garrison National Ten-Minute Play Award at the Kennedy Center in 2015 and has been produced nationally, from City Theatre to the Samuel French Off Off Broadway Festival. Miles of Homemade Candy has had multiple productions at City Theatre Miami and beyond. No One Talks About It: A Lactation Play and Misplaced have been produced in Boston and New York, and several of her shorts are published in Smith & Kraus anthologies. Her work has also been staged internationally in Paris and Bucharest.
In addition to writing, Cassie works as an AEA stage manager with theaters including American Repertory Theater, The Boston Conservatory, Actors’ Shakespeare Project, SpeakEasy Stage, Boston Playwrights’ Theatre, Central Square Theater, and Berkshire Theatre Group.
She is deeply committed to teaching and mentoring emerging artists. Cassie is an Assistant Professor at Boston Conservatory at Berklee, where she teaches playwriting, literature, and technical theater. She also teaches in Lesley University’s MFA Program in Creative Writing for Stage & Screen and has guest lectured at Wheaton College and Emerson College. She currently serves as Co-Chair of Region 1 for the National Playwrights Program at the Kennedy Center American College Theater Festival.
Her Jewish Cuban heritage, multilingualism (English, Hebrew, and Spanish), and passion for survival stories all fuel her work. Across genres and forms, she is always searching for connection and creating theater that speaks to audiences across communities and cultures.
Learn more at www.cassiemseinuk.com.