Semenova is the co-chair of the Ukrainian LGBT organization LIGA, which seeks to promote the interests of LGBTQ individuals, promote healthy lifestyles and diversity, and develop partnerships with state and civil bodies. One of LIGA-Ukraine's biggest achievements has been the creation of the Resource Center, designed to be a hub for young LGBT groups and organizations. Another core focus of LIGA-Ukraine is LGBTQ health, which includes HIV prevention programs for LGB, lesbian health programs, transgender health issues, and a network of friendly doctors. LIGA created the Public Centre on Monitoring of Human Rights Observation in Mykolaiv for monitoring crimes based on LGBTI-phobia. Semenova is a specialist in Public Relations from Kyiv National University of Culture and Arts and a general practitioner from National Medical University in Kyiv.