A promising midfielder, Maher joins Victory after four seasons in the Westfield W-League with Canberra United.

The 19-year-old played a role in Canberra's 2014 title-winning side, starting in the 3-1 Grand Final win over Perth Glory.

Victory coach Jeff Hopkins said he was looking forward to working with Maher as she looks to take the next step in her career.

"Grace has a lot of potential and I'm looking forward to helping her develop as a player in Melbourne," Hopkins said.

"Despite her age, Grace brings great W-League experience to our midfield and she knows what it takes to win a Championship.

"She is a creative midfielder who has great vision for a pass and the ability to penetrate through opposition lines."

Maher is the second new addition to Victory's squad for the 2018/19 season, following the signing of Emily Gielnik last week.