**Job Description**

**Job Description**

The Screening & Compound Profiling group within the Quantitative Biosciences Department is seeking a Principal Scientist with deep expertise in applied quantitative pharmacology and/or biochemistry to join our Research Laboratories in Rahway, NJ. This role will provide senior-level expertise at the interface of in vitro pharmacology and quantitative modeling. The successful candidate will serve as a scientific resource across the broader research organization, contributing rigorous pharmacological analysis across programs and delivering mechanistic insight to drug discovery decisions spanning target classes, modalities, and therapeutic areas. The primary responsibilities of this role will be to develop, apply, and communicate quantitative data models that elucidate molecular mechanisms of action, support translational profiling of compound activities, and guide molecular optimization. The ideal candidate will combine authoritati...