Sheridan is Program Coordinator for ABC International Development Papua New Guinea (PNG), working on the Media Development Initiative with various media organisations in PNG. 

Previously, Sheridan worked for the Australian Trade and Investment Commission (Austrade) as a Pacific Business Liaison Researcher. She holds a Bachelor of Arts in International Security from the Australian National University, and a Master in Sustainable Development and Diplomacy from the United Nations Institute of Training and Research and The University for Peace, based in Costa Rica. 

Sheridan’s research interests include non-militarisation and countries without sovereign military institutions, security dynamics in the Pacific region, and traditional governance and bilateral security partnerships in Pacific Island countries.