Leonid Tome Da Costa Joaquim was born on 22nd October 1984 in Mozambique Island city, Nampula province, Mozambique. He is Mozambican, is married with 4 children and lives in Maputo province. He has been an expert in HIV service delivery since 2020 with the International AIDS Society (IAS) in collaboration with the Instituto de Higiene e Medicina Tropical, Lisbon, and Nelson Mandela University, KwaZulu-Natal, South Africa. He achieved a diploma in HIV management from the college of physicians of South Africa in 2021 and a Bachelors in medicine from Eduardo Mondlane University, Mozambique, in 2014. He is a member of the International AIDS Society, member of the HIV South Africa society and a member of the College of Medicine of South Africa. He is a junior research medical doctor. Portuguese is his mother tongue and he speaks and writes English fluently. He has been engaged in HIV programs since 2014 and has attended many international HIV conferences organized by the IAS since 2018 in many countries.