Biostatistics - Summer 2026 Intern

Sanofi is an innovative global healthcare company focused on improving people’s lives through scientific advancements. They are seeking a Summer 2026 Intern for their Biostatistics team to develop and evaluate deep reinforcement learning models aimed at optimizing dosing regimens in clinical trials, with a direct impact on clinical development and patient outcomes. Responsibilities Design and implement deep reinforcement learning models for dose optimization in clinical trial settings Conduct simulation studies to evaluate model performance under various clinical scenarios Compare DRL-based approaches with traditional dose-finding methods Collaborate with statisticians and clinical scientists to ensure clinical relevance and interpretability Document methodology, results, and insights for internal presentations and potential publications Skills Current PhD student in Statistics, Biostatistics, Computer Science, Applied Mathematics, or a related field at an accredited college or university Experience and foundation in machine learning, with specific experience in deep learning and/or reinforcement learning Hands-on experience with PyTorch, Gymnasium (or similar RL environments), and Python-based data science tools Must be able to relocate to the office location and work 40hrs/week, Monday-Friday, for the full duration of the co-op/internship Must be authorized to work in the US for the full duration of the co-op/internship Familiarity with clinical trial design and statistical modeling is a plus Excellent communication and collaboration skills Benefits Enjoy a thoughtful, well-crafted rewards package that recognizes your contribution and amplifies your impact. Company Overview Sanofi is a global biopharma company focused on prescription drugs, vaccines, and treatments for chronic, rare, and infectious diseases. It was founded in 1973, and is headquartered in Paris, Ile-de-France, FRA, with a workforce of 10001+ employees. Its website is