What does a principal scientist in upstream process development do?

A Principal Scientist in Upstream Process Development leads the design, optimization, and scale-up of processes for producing biologics such as proteins or vaccines using living cells. They oversee experimental strategies to improve cell culture performance, maximize yield, and ensure product quality. This role often involves mentoring junior scientists, collaborating with cross-functional teams, and ensuring that upstream processes comply with regulatory requirements. Their expertise is critical in advancing drug candidates from research through clinical and commercial manufacturing.