This laboratory-based role will support the development, qualification, validation, transfer, and clinical implementation of cell-based assays, virus neutralization/functional antibody assays, and ligand-binding assays (LBAs) used to characterize vaccine-induced immune responses and support clinical vaccine development programs, while also contributing to biomarker and immunogenicity testing across Moderna's infectious disease, oncology, and autoimmune disease portfolio. The successful candidate will bring strong hands-on experience with mammalian cell culture, cell-based functional assays, and immunoassays and will be expected to independently execute assay development and optimization experiments, qualification/validation studies, clinical sample testing, data analysis, troubleshooting, and compliant documentation in a regulated clinical laboratory environment.