Matthew Garland Kelly, 21, paid the New Zealand woman to assault her one-year-old boy, and record it, so that he could satisfy his sick sexual fantasies.
He faces 16 charges relating to young children in offences committed between December 2013 and August 2014, and was charged at Christchurch District Court this week.
The man did not appear in court at the hearing, despite the severe nature of his alleged crimes.
He stands accused of directing the mother to sexually violate her boy, and then paying her for the digital recording of the act.
Kelly also offered her money so that he could spend time alone with her children - describing the sexual acts he wanted to perform on them.
He also possessed publications that depicted adults sexually offending against children.