Regeneron Pharmaceutical's Analytical and Biological Mass Spectrometry Group (ABMS), located in Tarrytown, NY is seeking a highly motivated Associate Scientist. In this role, you will work in an innovative mass spectrometry lab and execute LC-MS methods for characterizing biotherapeutic products to support all stages of drug development, from early-stage candidate selections to late-stage regulatory submissions. You will perform routine technical tasks to support a diverse R&D pipeline.

**A Typical Day in This Role Looks Like:**

+ Execute established protocols and clearly communicate analytical characterization of biotherapeutics, including monoclonal and bispecific antibodies, Fc-fusion proteins, and other modalities (adeno-associated virus, siRNA, etc.) to support drug development.
+ Execute characterization activities, with an emphasis on intact-mass LC-MS technique to elucidate critical quality attributes such as charge variants, size variants, and post-transla...