
Job description
As a Staff Software Engineer, you will work at the forefront of applied AI, building multi-agent architectures, LLM-powered workflows, and intelligent automation pipelines that directly support Sanofi's mission to bring life-saving therapies to patients faster.
Design, build, and deploy autonomous AI agent systems capable of multi-step reasoning, planning, and task execution across R&D workflows. Develop multi-agent architectures, implement tool-using agents, and build feedback loops and self-correction mechanisms.
This is a high-impact role for an engineer who is passionate about autonomous AI systems and wants to apply them in a meaningful, regulated, and scientifically rigorous environment. You will have the freedom of technical choice to drive innovation and take ownership of technical decisions.
Company

Healthcare
Sanofi is a global biopharmaceutical leader that harnesses research and AI to develop innovative vaccines and medicines across immunology, oncology, neurology, rare diseases, diabetes, cardiovascular, and consumer health. The company's deep expertise in the immune system underpins a robust pipeline that protects and treats millions worldwide, while its commitment to scientific breakthroughs drives progress in urgent health, environmental, and societal challenges. Sanofi's culture of purpose-driven innovation and collaborative teamwork fuels continuous growth and delivers meaningful impact for patients and communities alike.
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