Leandro Mallamaci è nato in Calabria, ha studiato Medicina a Siena e si è specializzato in Pediatria presso l'Istituto G. Gaslini di Genova. Ha lavorato brevemente in Australia presso i Royal Children's Hospitals di Melbourne e Brisbane. Successivamente, ha lavorato come pediatra ospedaliero a Treviglio (BG) e come Neonatologo a Vigevano (PV) per il Gruppo San Donato. Attualmente lavora a Genova come pediatra nel Sistema Sanitario Nazionale e come consulente esterno pediatra e neonatologo in diversi ospedali del nord Italia.
Leandro Mallamaci was born in Calabria, studied Medicine at the University of Siena, and specialised in Paediatrics at the G. Gaslini Institute in Genoa. He briefly worked in Australia at the Royal Children's Hospitals in Melbourne and Brisbane. Subsequently, he worked as a hospital paediatrician in Treviglio (BG) and as a Neonatologist in Vigevano (PV) for the San Donato Group. He currently works in Genoa as a paediatrician within the National Health Service and as an external Consultant Paediatrician and Neonatologist in various hospitals in northern Italy.