Alexandru Baciu was born in 1977, in Bucharest. In 1999 he graduated from the Bucharest Film Academy as film director. He continued his studies at the University of Bucharest, Communication and PR department, which he graduated in 2003. As a scriptwriter, Alexandru Baciu worked together with Răzvan Rădulescu and Radu Muntean for Muntean’s The Paper Will Be Blue (Locarno IFF 2006), Boogie (Cannes, Quinzaine des réalisateurs, 2008; Awarded Best Script at Hamptons IFF), Tuesday, After Christmas (Cannes, Un certain regard 2010), One Floor Below (Cannes, Un certain regard 2015; Awarded Best Script at Seville IFF and RiverRun IFF). Muntean's last film, Alice T., with a script by Alex Baciu, Răzvan Răduleascu and Radu Muntean premiered in Locarno IFF. He also teamed up with Răzvan Rădulescu for Gruber's Journey and Principles of Life (San Sebastian IFF, 2010). In 2011, he co-directed, along with Radu Muntean, Visiting Room, a documentary produced by HBO Romania. Together with his wife, Maria Popistașu, he co-directed, in 2017, The Seagull, a short based on a script by Maria Popistașu.