Darien has been living with HIV for over thirty years. She has worked in various AIDS service organizations throughout this time, mostly in the areas of health promotion, and knowledge translation and exchange. Darien was most recently employed as the Director of Program Delivery at CATIE and is currently the co-chair of the Toronto to Zero Fast Track City Initiative. This new initiative aims to dramatically reduce the number of new HIV transmissions in Toronto and to ensure optimal quality of life for people living with HIV, building on new research linking viral load and transmissibility. Darien is also involved on the community advisory boards of two CIHR research studies on HIV and aging, the provincial PANACHE study with Realize and the national CHANGE study. She was awarded a Casey Award in 2019 for her leadership and activism in the Toronto HIV community. Darien joined Realize in July 2019 and will be filling in for Kate Murzin while she is on maternity leave.