Senior Principal Scientist, Type Immunology

Job title:Senior Principal Scientist Type 2 Immunology

Location:Cambridge, MA

Immunology and Inflammation Therapeutic Area
We have an exciting opportunity to join Sanofi's Translational Biology team as a Senior Principal Scientist within the Type 2 Immunology cluster. This role sits at the intersection of cutting-edge preclinical research and clinical development, offering a unique platform to shape the trajectory of one of the industry's most compelling immunology portfolios. Working at our Cambridge Crossing research campus, you will contribute to a team with deep commitment to scientific excellence and patient impact across dermatology, gastroenterology, respiratory, and rheumatology.

This position carries a dual mandate. Leading preclinical research programs from hypothesis generation through execution, while also serving as to support early clinical and/or late-stage or marketed product programs. In this capacity, you will drive translational research strategies that inform clinical development and support lifecycle management initiatives for assets. You will integrate insights from clinical studies back into research strategy, ensuring a continuous and productive dialogue between both early research, clinical development and medical affairs.

The successful candidate will leverage Sanofi's extensive technical capabilities, including AI enabled platforms, single cell technologies, and multiomic approaches, while collaborating closely with Development, Medical Affairs, and Commercial teams. This is an opportunity to make a meaningful scientific and strategic contribution within a highly collaborative, cross functional environment.

Join the engine of Sanofi’s mission — where deep immunoscience meets bold, AI-powered research. In R&D, you’ll drive breakthroughs that could turn the impossible into possible for millions.

We’re an R&D-driven, AI-powered biopharma company committed to improving people’s lives and delivering compelling growth. Our deep understanding of the immune system – and innovative pipeline – enables us to invent medicines and vaccines that treat and protect millions of people around the world.

Together, we chase the miracles of science to improve people’s lives.

• Lead preclinical research programs from hypothesis generation through experimental execution, integrating findings into broader clinical strategy.
• Directly support early clinical and or late stage or marketed product programs, translating clinical insights back to research and driving translational strategies to support clinical decision making and asset life cycle management.
• Design and execute research programs in close partnership with Development, Medical Affairs, and Commercial teams as part of IEGP to maximize the value of Sanofi's portfolio.
• Independently formulate research hypotheses and apply scientific expertise to design and execute experiments using murine and human immunology approaches.
• Develop novel in vitro and in vivo assays and apply advanced technologies including single cell approaches (flow cytometry, scRNAseq), multiomics, and imaging platforms.
• Lead cross functional collaborations and manage stakeholder relationships effectively across a matrixed global organization.
• Communicate research findings clearly and compellingly to diverse audiences, both technical and nontechnical, internal and external.
• Mentor and actively support the scientific and professional development of junior team members.
• Stay at the forefront of scientific advances and contribute to the strategic direction of the group.
• Maintain laboratory activity while providing scientific leadership; this role has an expectation of bench engagement as necessary.
• Ensure adherence to safety…