What is Leonardo da Vinci's official occupation?

Leonardo da Vinci, one of the three outstanding figures of the Italian Renaissance, is also the most perfect representative of the whole European Renaissance. He is a knowledgeable and versatile painter, fable, sculptor, inventor, philosopher, musician, physician, biologist, geographer, architectural engineer and military engineer. For his native Italy, he is a symbol of national culture. In this country, there are countless things named after him, such as red wine, furniture, restaurants, hotels and airports. The famous Italian brand Leonardo Di Gasun also used his self-portrait as a symbol.