Marco Ingco, a Philippines native who holds a green card and lives in Howell Township, must serve at least 17 years before becoming eligible for parole under the sentence imposed Friday.
He also will have to register as a sex offender and could face deportation once he's freed from prison.
Monmouth County prosecutors say Ingco knew the children, who were both under the age of 11 when the attacks occurred. He also took photos of the girls with his cell phone.
