After graduating, Ruttkay went to work at the Pázmány Péter University under professor at the university's Institute for Finno-Ugric Languages, until Zsiray's death in 1955. The following year, she and her husband left Hungary and moved to Austria, where she spent two years as director at the Hungarian Gymnasium in Innsbruck. In 1958, she resumed her studies, under professor at the University of Vienna, studying prehistory, early history and art history. After her matriculation, Ruttkay applied for Austrian citizenship and was naturalized in 1961. The following year, she began working at the in Eisenstadt, where she remained for six years. In 1968, Ruttkay went to work at the Vienna Museum of Natural History, initially inventorying and packaging artifacts for the Prehistoric Department. In 1970, she began archaeological investigations at near Mödling, focusing on the Neolithic development of Central Europe. That same year, she wrote a report about a New Stone Agechertmining community at Antonshöhe near Mauer, which was one of the first industrial complexes in Lower Austria and the only known deep-shaft mine in the country from the period. In the early 1970s, Ruttkay began excavations at Prellenkirchen, which sparked interest in a systematic evaluation of Austria's Linear Pottery culture. She coined the term "Vornotenkopfkeramik" in 1976, to refer to the oldest LBK groups known in Austria, and it referred to potters who used simple linear decoration, tempering their pots with plant matter. Completing her doctorate in Philosophy 1979, with a dissertation of Das Neolithikum mit bemalter Keramik in Österreich. Eine chronologisch–kulturhistorische Untersuchung from the University of Vienna, Ruttkay continued her research into a time-line for Austrian prehistoric cultures. Her studies included many cultural groups, such as the Moravian-Eastern Austrian Group of painted pottery in 1979, the Moravian-Austrian Baalberger Group in 1979 and again in 1989 and the Bronze Age Attersee Group in 1981, among others. The Attersee Group and Mondsee Culture lived along the lake shores of Upper Austria and their pottery was characterized by designs of arcs, lines and chevron bands, sun discs and triangles. Ruttkay's study of the Mondsee was one of the most relevant works on the culture and established a chronology still in use, which was later confirmed with radiocarbon dating. In 1982, Ruttkay's husband died after a lengthy illness. The following year, she was appointed to the High Counselor of the Prehistory Department, becoming the director of the library at the museum. In 1983, Ruttkay married the philosopher, one of the main editors for Radio Free Europe, who she had known since her teaching days in Innsbruck. During her tenure as library director, between 4000 and 5000 new books were added to the collection on prehistoric topics. She retired from the Department in 1991, but continued her research, completing analysis of the Wachberg phase in 1995 and Neusiedl phase in 2002. Until her death, she continued publishing works on Austrian cultural development.
Death and legacy
Prehistory professor dubbed Ruttkay the "grande dame of Austrian Neolithic research". Her contributions to the study of the Austrian Neolithic Age were recognized by many awards including receipt of the Lower Austria Promotion Prize, which recognizes contributions to the development of Lower Austria, in 1987 and receipt of the Austrian Cross of Honour for Science and Art the following year. Ruttkay died on 25 February 2009 in Vienna and was cremated at Feuerhalle Simmering, where also her ashes are buried.
