Seka studied sculpture at the Academy of Fine Arts in Zagreb with Frano Krsinic and Krsto Hegedusic (1942–45), before moving to Paris on a scholarship from the French government from 1946 until 1948.
There, she continued her studies in sculpture as well as drawing at the Académie de la Grande Chaumière, before earning a degree from the Sorbonne (1948) in art history and archaeology.
While in Paris, Seka experimented with materials and processes and made animations with wax-sculpted figurines; her work in a ceramic button workshop led to a more technical understanding of the medium.
In 1952, she moved to Caracas, where she continued making utilitarian objects, while testing variations in heat and firing times in her newly acquired large kiln.
After 1972, Seka explored the possibilities of ovoid forms with a completely solid exterior, further bridging the divide between ceramics and sculpture.