Mellita is a lecturer in Science Education. Her involvement in overseas teaching and learning experiences began in 2010 when she led a small group of six pre-service teachers on a 4-week teaching practicum in the Solomon Islands.

Ten years later the program, which runs for the month of November every year, has grown to 20 pre-service teachers, three university staff members and two schools in Solomon Islands. It is a program close to Mellita's heart, and her work in the space has led to a number of other international engagements including writing the teacher education program fro the Pacific Region through UNESCO, working in Fiji and Kiribati with students and teachers, and recently, an appointment as the coordinator for international community engagement at her university.