Graduating from NCAD in 1982, Grainne then completed a two year apprenticeship at the Geoffrey Healy pottery. Her exhibitions include the Irish Ceramic Awards, Ceramics Ireland and the International Symposium of Ceramic Art V-oglje , Slovenia.

Grainne has won awards at the Irish Ceramic Awards, Ceramics Ireland, DCCOI (RDS National Craft Awards) and the Dublin Airport Authority to design the Allianz B2Arts Awards 2014.