Sinyor was born in Ottawa, Canada, and raised in the Jewish faith as the daughter of Egypt-born father, Albert (a medical-equipment manufacturer) and mother, Lynda (a computer programmer and teacher).
[1] She received a Bachelor of Arts degree in religious studies from Montreal's McGill University in 1998.
[1] She then worked in a call center for a year before taking a screenwriting course at Ryerson University in Toronto and going on to study at the Canadian Film Centre.
Sinyor created the comedy drama time-travel series Being Erica, which ran four seasons from 2009 to 2011.
As of at least 2010, Sinyor is married to entrepreneur David Singer, with whom she has two children, Jada and Max.