In 1933, Kotta applied for a job at the University of Thessaloniki, aiming to teach a course about the people's public and private lives in Byzantine times. Her application was rejected, possibly on the basis of her gender.[2]
In the 1930s, Kotta became involved with Greece's archaeological community. She wrote for the Archaiologiki Ephimeris, one of Greece's prominent archaeological journals.[1] In the journal's 1937 edition, Kotta published a piece about a rare icon of Mary.[4] That same year, she was a member of the Archaeological Society of Athens.[5]
During the early 1900s, though the sciences in Greece were male-dominated, some women entered careers as archaeologists. In the decades between WWI and WWII, two women were appointed to the state-run Greek Archaeological Service: Semni Karouzou and Eirene Varoucha-Christodoulopoulou, who worked as excavators. Contemporary activist Avra Theodoropoulou called their promotion a "feminist victory".[4]
After the authoritarian Prime Minister Ioannis Metaxas came to power in 1936, a law was passed which forbade women from joining the Archaeological Service. Women already employed there could continue to work, but they couldn't become the directors of museums or archaeological programs. No women joined the Service until the law was abolished in 1955, with two exceptions.[4]
Venetia Kotta was one such exception. She joined the Archaeological Service under the special circumstance of WWII.[4] She worked in the Byzantine Museum for over a decade. She became a curator of the Byzantine Museum in 1943, specializing in Byzantine textiles and other handmade artifacts.[2]
Kotta worked at the Byzantine Museum until her death in 1945.[2]