Marinez has a degree in Biological Sciences and a PhD in Marine Science. She is an associated university professor and has been teaching Integrated Coastal Management and Marine Spatial Planning at Federal University of Santa Catarina (UFSC), Brazil, since 2010. At UFSC, she is the Research Leader of the Integrated Coastal Management Laboratory. Marinez is also visiting professor at the University of Cadiz, Spain, for the Master on Integrated Management of Coastal Areas. She is a trainer in BPiP since 2017, having held workshops in Brazil, Surinam, Argentina, Guyana, Mozambique and countries of the East Asia Seas Region.

Marinez is the executive secretary of the Brazilian Sea Forum and the Technical Director of the Brazilian Agency for Coastal Management. She is also one of the Brazilian Coordinators of the Iberoamerican Network on Coastal Management (IBERMAR) and the Editor in Chief of Revista Costas (an IBERMAR scientific journal for coastal and marine management). She is member of three IUCN groups: Task Force for Nature Conservation in Urban Areas; World Commission on Protected Areas and Commission on Ecosystem Management.