Zaihirat co-founded Oak3 Films in 1996 together with two friends. She is a producer with 12 years of experience spanning a breadth of productions including feature films such as Chicken Rice War
and the 2007 New York drama Girl in the Park
starring Sigourney Weaver and Kate Bosworth, to name a few. She has directed and produced TV series and factual programmes for various broadcasters including ESPN Star Sports, Discovery Channel, Arte, Channel News Asia, ARD, Ciné Cinémas and Animal Planet.