[3] She is a founding member of the One Million Signatures Campaign,[4] a grassroots effort working to end gender-biased laws in Iran.

[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.

[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.

[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.