She has been a Labor Party member of the Victorian Legislative Assembly since November 2014, representing the electorate of Dandenong.

Her father worked as an electronics technician and for most of her life, her parents ran a small business repairing household electrical goods.

After completing her university studies Williams worked as solicitor at Baker McKenzie.

Most recently before becoming an MP, Gabrielle worked as a Project Manager in the Office of the Vice Chancellor at The University of Melbourne.

[6] Williams has one son and has been open about her IVF journey and life as a solo mother by choice.