Matiu founded One Good Street, a social networking platform to encourage neighbour initiated care for older residents at risk of social isolation and loneliness. Matiu is Design Integration Lead at Bolton Clarke, driving innovation and creativity in the aged and community sector. Matiu has a Master's degree in Public Health and broad clinical and managerial nursing experience, including working in Tijuana, Mexico with Nobel Prize Laureate Mother Teresa in international border aid, and as an emergency, oncology, intensive care nurse and is a sexual health Nurse Practitioner.

Matiu contributes to health system innovation through involvement with Better Care Victoria as a board member and the Emerging Leaders Clinical Advisory Committee and mentors the next generation of undergraduate and postgraduate science students through the University of Melbourne Science Industry Mentoring Program.