In her final year of B.Sc., she extended her studies to biochemistry and molecular biology and subsequently pursued her master’s degree at the John Curtin School of Medical Research, Australian National University, which was later upgraded into a Ph.D. degree. During her Ph.D., Marsia advanced her biochemical experience, learning peptide/protein science and mastering biophysical techniques to study the structure and function of prion protein repeat peptides. Marsia further developed her biochemistry and molecular biology skills in the research on yeast mutant resistance to atovaquone at the Eijkman Institute for Molecular Biology, before joining the Protein Chemistry group, Leiden Institute of Chemistry in the Netherlands where she developed a fluorescence-based histamine and cholesterol biosensor. In 2009, upon receiving the Small Grant Awards from the International Society for Infectious Diseases and Science and Technology Research Grants from Indonesia TORAY Science Foundation, Marsia started to build a platform of research on T-cell epitope mapping for avian influenza A virus H5N1, combining immunoinformatics and in-vitro T-cell immunology assays.  In 2012, she received a Fulbright Senior Research Fellowship Award that enabled her to join the research group of Prof. Hildebrand at the Oklahoma University Health Science Center to study peptide binding to HLA-A*24:07, one of the major HLA alleles found in the Indonesian population.  She is currently a faculty member of the Biomedicine Department and teaches subjects on immunology, cell signaling, cancer immunology, and virology.  She is a recipient of the Southeast Asia Europe Joint Funding Scheme for Research and Innovation Grant from KEMDIKBUDRISTEK to study cell-mediated immunity toward SARS-CoV-2 in the Indonesian population in collaboration with University Hospital Tuebingen and Faculty of Medicine Siriraj Hospital, Mahidol University.