The Upstream Process Development Scientist develops, optimizes, characterizes, and scales upstream bioprocesses supporting production of biologics, vaccines, cell therapies, and other biotechnology products. The role applies expertise in cell culture, fermentation, media development, and bioreactor operations to improve process performance, product quality, and manufacturing efficiency. The scientist works with Process Development, Manufacturing, Analytical Sciences, Quality, and other cross-functional teams to support technology transfer, process validation, and commercial manufacturing. The position also contributes to troubleshooting, continuous improvement, and implementation of bioprocess technologies while maintaining compliance with applicable quality and regulatory standards. This is a temporary position scheduled Tuesday through Saturday, 8 a.m. to 5 p.m.; weekend work might be expected. Candidates living within commuting distance of Malvern, Pennsylvania, are encouraged to apply.