Fall 2026 Co-Op - Large Molecules Research

Sanofi • Cambridge, MA

1d • $27 - $45 • Onsite

About The Position

At Sanofi we are committed in our quest to be a world-class biologics research organization. We are pioneering innovation in biologics with the first approved nanobody drug, the first clinical stage tri-specific antibody, and novel synthetic biology for new engineering paths. Our global Large Molecule Research (LMR) platform focuses on antibodies, nanobodies and synthorins as therapeutic modalities to partner closely with other research platforms and Sanofi’s therapeutic areas (Immunology, Oncology, Rare Disease and Neurology) in the discovery and ultimate delivery of new candidate molecules into our pipeline. Responsibilities in this co-op may include: Express and purify recombinant antibodies, antigens, and fusion proteins from mammalian expression systems Perform analytics to ensure the purity, quality, and function of recombinant proteins Initiate, design, and perform innovative technology development experiments Present data to department and project teams Ensure thorough and compliant experimental data capture to enable training of ML/AI algorithms Interface with digital teams to automate data management bottlenecks About Sanofi 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.

Requirements

• Currently enrolled and pursuing a bachelors or masters degree in Molecular Biology, Biology, Chemistry, Engineering, or related STEM field at an accredited college or university with the expectation that you will complete your current degree by the Spring of 2028
• Must be enrolled in an accredited college or university throughout the duration of the co-op/internship
• 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 permanently authorized to work in the U.S. and not require sponsorship of an employment visa (e.g., H-1B or green card) at the time of application or in the future. Students currently on CPT, OPT, or STEM OPT usually require future sponsorship for long term employment and do not meet the requirements for this program unless eligible for an alternative long-term status that does not require company sponsorship

Nice To Haves

• Passion for scientific rigor with a curiosity and drive to explore new scientific questions
• Ability to troubleshoot technical and scientific problems, analyze and interpret experimental data and suggest next steps
• Excellent organizational and time management skills are required
• Experience with mammalian cell culture including sterile technique and use of biosafety cabinet (BSC)
• Experience with mammalian expression systems (CHO, HEK cells) and general transfection techniques
• Experience with general biologics analytical characterization and techniques
• Experience or knowledge of affinity-based and/or conventional chromatographic separation systems and techniques (Akta protein purification systems and Unicorn software)

Responsibilities

• Express and purify recombinant antibodies, antigens, and fusion proteins from mammalian expression systems
• Perform analytics to ensure the purity, quality, and function of recombinant proteins
• Initiate, design, and perform innovative technology development experiments
• Present data to department and project teams
• Ensure thorough and compliant experimental data capture to enable training of ML/AI algorithms
• Interface with digital teams to automate data management bottlenecks

Benefits

• Bring the miracles of science to life alongside a supportive, future-focused team.
• Discover endless opportunities to grow your talent and drive your career, whether it’s through a promotion or lateral move, at home or internationally.
• Enjoy a thoughtful, well-crafted rewards package that recognizes your contribution and amplifies your impact.
• Exposure to cutting-edge technologies and research methodologies.
• Networking opportunities within Sanofi and the broader biotech community.

What This Job Offers

• Career Level: Intern
• Number of Employees: 11-50 employees