Maitec studied sculpture at the Nicolae Grigorescu Institute of Fine Arts in Bucharest from 1945 to 1950. He was one of the founders of the Union of Plastic Artists of Romania. He made his debut as a sculptor 1953, when he exhibited sculptures inspired by communist art of the time, Socialist Realism. He was one of a group of Romanian intellectuals who took part in a movement centered around transcendental meditation. This eventually led to him being expelled from the Communist Party. Maitec was one of a few Romanian artists allowed to travel abroad during the communist era and he exhibited in the Venice Biennale contemporary art shows several times, and the International Festival of Edinburgh.
After 1989, the sculptor exhibited in the Georges Pompidou Center in Paris. His works in metal and wood are displayed in the Tate gallery in London, Paris, Sydney and Florida.