It all started in summer theater, when Sini was a kid. At ten, her world expanded when a teacher who loved movies showed her class The Sting and Magnolia. They spent hours discussing the films and playing movie critics, shot their own short films on camcorders for homework and put on weekly plays. That’s when she knew.

Originally from Finland, Sini moved to New York to study Acting for Film at the New York Film Academy. She has since spent a decade working in film, television, and theater. Her credits include The Blacklist, Asian Persuasion, The Sky Is Blue With Lies, King of Los Angeles, A Wilderness of Error, and Uncut Gems. She has also appeared in many commercial campaigns for brands including Samsung, White Claw, Nick’s Ice Cream, Dannon Oikos, Cityrow, and Aveeno.

Sini also creates her own work. Her debut short film, Hustle, won Best Actress and Best Writing at festivals across the country. She is an executive producer on Deville (dir. Luca Pizzoleo), currently in production, and will next be seen in Choices (dir. Chris Brew) in 2026.

Outside of her work, Sini is a mom, a classical pianist, a lifelong dancer, and is trained in stage combat.