[1] She worked as a lecturer for 44 years[2] at the University of Colombo, Sri Lanka, where she became Dean of Faculty for the Department of Sinhala.

[4] Wijegunasinghe began a new school of Marxist literary criticism in Sri Lanka, writing three books and delivering many lectures on this topic.

She worked as a professor at the University of Colombo in the Sinhala department, where she taught a course on Marxist literary criticism.

Wijegunasinghe translated Marxist books into Sinhala and was a writer for the World Socialist Web Site.

[4][5] Wijegunasinghe was married to Wjie Dias, General Secretary of the Sri Lankan SEP, and had a son, Keerthi.