He is the brother of WikiLeaks founder Julian Assange and has been at the forefront of the fight to free him. In addition to his work as a film producer, Gabriel has produced pioneering work at the intersection of media, technology, and activism to harness the potential of emerging platforms to catalyse social change

Gabriel produced Ithaka: A Fight to Free Julian Assange, an intimate look at his family’s struggle against Julian’s extradition, directed by Ben Lawrence. The film was nominated for the 2022 Walkley Award for Best Documentary, received the Audience Award at the Berlin Human Rights Festival, won the Amnesty Award at the Thessaloniki Documentary Festival, and was broadcast globally, including a theatrical release in the United States.

Beyond filmmaking, Gabriel was a founding member of AssangeDAO, a decentralised autonomous organisation supporting his brother’s legal defence. He also produced “The Censored Collection,” an innovative NFT project by artist Pak and Julian that utilises blockchain technology to tell Julian’s story through interactive digital art. This groundbreaking transmedia initiative engaged a global audience and successfully raised substantial cryptocurrency funds for legal expenses.

Gabriel has served as producer on Emu Runner (2018), which premiered at the Toronto International Film Festival (TIFF) and was nominated for an Australian Academy of Cinema and Television Arts (AACTA) Award in 2019. In 2021, he produced the Arabic-language psychological thriller Farah which was acquired by Netflix.