Born in 1977, in Piatra Neamt, he studied at the "Sfântu Gheorghe" Theological Seminary in Roman, an experience that would inspire his first feature film Un pas in urma serafimilor/One Step Behind the Seraphim.
A graduate of the Media University – Film directing in 2002, he is screenwriter and director of short films, feature films and TV series.
In 2011 he was the producer, writer and director of the short film Numaratoarea manuala/The counting device that was selected in the official competitions of Sarajevo IFF, Cambridge IFF, Montpellier IFF, Leuven IFF and won the Jury award at Leiden ISF. Other shorts: Vocea a doua/Second voice (2012), Cai putere/Horsepower (2014).
Daniel Sandu’s debut feature One Step Behind the Seraphim won eight awards at the12th Gopo Awards including best film, best director and best debut feature.