Sira Thierij is an award-winning investigative journalist and documentary filmmaker based in Dakar, Senegal. She reports across Africa for international and German broadcasters, often working as a one-woman band: directing, producing, shooting, and editing her documentaries independently. She also reports for radio and appears as an on-air correspondent in English and German. Her work focuses on the resilience of people affected by conflict, displacement, climate change, and political upheaval. She has reported from more than 35 countries, including high-risk and hostile environments.

Her documentaries have aired on BBC, ARTE, ZDF, DW, ARD, and VOA, among others. Generation Kush, winner of an AIB Award, is an immersive documentary and the first film to cover the growing drug epidemic in Sierra Leone. Uncut Future, nominated for a Rory Peck Award, follows activists in The Gambia as they fight a bill to overturn the country's ban on female genital cutting. Her most recent investigative documentary, Putin's Power Play in Africa, explores Russia's expanding influence in the Sahel and was filmed under extremely dangerous conditions, gaining rare access to countries no other international film team has reported from in years. Her work has also been recognized by the One World Media Awards and the Society of Editors. She also reports for BBC World Service, BBC Radio 4, DW News, France 24, NZZ, WDR, and NPR.

Before going independent in 2023, Sira was a BBC foreign news journalist working across bureaux in Brussels, Kyiv, and Nairobi, reporting on the decade’s most defining events for the BBC’s flagship TV, radio, and digital programmes. She covered the war in Ukraine from the first day of the invasion and led investigations into Russian war crimes that were cited by the UN Security Council. With Daniel De Simone, she co-reported The Abuser Working for MI5, which the UK government tried to block in the High Court to prevent the exposure of an intelligence agent accused of abusing women.

Alongside her editorial work, Sira has acted as a director of photography on selected projects for clients including Google DeepMind, the Gates Foundation, UN Women, and Action Against Hunger, among others. HEFAT-trained and fluent in English, German, French, and Dutch, she holds a master's in International Security and Journalism from Sciences Po Paris and a bachelor's in political science and law. She is available for assignments worldwide.