She is chief editor of the first German magazine for women and AIDS, the DHIVA. As founder and director of the GSSG, a charitable foundation on sexuality and health, she coordinates projects like Lifeboat Germany, a Guide to (HIV-) positive Motherhood, and the nationwide Network on Women and AIDS. Previously, Harriet worked for the German AIDS Foundation for 10 years in Bonn as the Manager Director. She now also undertakes research at the University of Malmö in Sweden into internet forums of sex workers' clients.