Peter Livingstone carried out a shocking campaign of abuse against five young victims at Tyneholm House in Pencaitland, East Lothian, in the 80s.
He was found guilty of six charges on February 14 following a trial at Edinburgh Sheriff Court.
The court heard the 67-year-old was employed at the Barnardo's home between 1979 and 1983 to look after vulnerable children and young adults, who required structure, care and emotional support.
The fiend repeatedly assaulted one boy by seizing and dragging him by the hair, throwing him onto a bed, punching him on the body and pressing or kneeling on his chest.
He also seized the victim by the neck and pressed his knuckles into his head.
The house parent sexually abused a second child by massaging his body and touching him indecently.
A third boy was repeatedly assaulted by Livingstone, who would seize him by the body, on one occasion dragging him into a room before attacking him.
Livingstone sexually abused a fourth child and forced a fifth to remove his clothing and stand naked ...