Tahmasebi is the co-founder and Executive Director of Femena, an organization which supports women human rights defenders, their organizations and feminist movements in the Middle East and North Africa and Asia regions. Tahmasebi is a leading expert on the situation of women in Iran and the Middle East.[3] She is a founding member of the One Million Signatures Campaign,[4] a grassroots effort working to end gender-biased laws in Iran.[5] While in Iran Tahmasebi also worked to support the development of Iran's emerging civil society. To this end she co-founded the Iran CSO Training and Research Center[6] and served as its board member.[7] In the US she continued her work to promote women's rights and strengthen civil society with an expanded focus on the MENA/Asia region. She served as the Director of MENA/Asia region at the International Civil Society Action Network (2011-2017), an organization focused on promoting peace and women's rights, which she co-founded.[8] Prior to moving to Iran, she worked in the United States to promote women's reproductive health and maternal and child health.[3]
Tahmasebi is a non-resident fellow at Democracy for the Arab World Now (Dawn),[9] board member of Doria Feminist Fund[10] and is on the Human Rights Watch MENA Advisory Committee.[11]
Tahmasebi was a founding member of the One Million Signatures Campaign, a grassroots effort aimed as collecting one million signatures demanding an end to legal discrimination against women. She served as the editor of the English site for the Campaign.[4] Tahmasebi was repeatedly banned from travel, interrogated and arrested in relation to her efforts to promote gender equality and as a member of the One Million Signatures Campaign.[5] Along with other activists she was arrested on March 4, 2007.[12] She was later sentenced to 2 years in prison, with 18 months suspended for 5 years.[13]
