Jennifer Hoy was appointed to a permanent position in the First Violin section of the Sydney Symphony Orchestra in 2001, after gaining a Bachelor of Music with 1st class Honours from the Sydney Conservatorium and a Masters of Music degree with distinction from the Australian Institute of Music. She studied violin with Goetz Richter and Alice Waten. During her career with the SSO she also performed as guest principal with the Deutsche Radio Philharmonie Saarbrücken, the Western Australian and Adelaide Symphony Orchestras, and with the Australian Chamber Orchestra. Jennifer served on the Musician's Executive of the SSO Management Committee for several years, most significantly during the period of divestment of the Orchestra from the Australian Broadcasting Corporation. She was also actively involved in mentoring and teaching young musicians as part of the SSO Artist Development, Fellowship & Playerlink programs.
Jennifer left the Sydney Symphony Orchestra in 2013 to accept the position of Legal Researcher/Associate to the Honourable Justice Mark Leeming at the NSW Court of Appeal. Since 2015 she has worked as a solicitor at the NSW Office of the Director of Public Prosecutions. She has been a Director of the Sydney Symphony Orchestra since 2008 and a member of Vanguard since 2013.