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Job Title: Summer-Fall 2026 Co-Op - Cell Therapy and Immuno-oncology

Location:Cambridge, MA

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.

About the Job

We re-engineer immune cells to selectively kill the tumor cells in cancer patients. Immune cells will function as living drugs and in favorable situations expand and exert a strong anti-tumor response. Similarly, they are bound by the same laws that endogenous human cells are, such as exhaustion by tumor-produced factors, abnormal tumor vessels, and other obstacles that a suppressive tumor microenvironment poses. We try to remove barriers to the success of cell-based therapies in our group.

The cell therapy Co-op will work hands-on in the lab in developing assays and techniques to mimic the tumor microenvironment and testing antibodies and biomaterials (e.g., nanoparticles) that alter the immune system in favor of tumor cell eradication. As part of a newly established team, the Co-op will have the opportunity to make significant contributions to the research and development on a daily basis.

The ability to learn quickly, work on multiple assignments, and effectively document scientific data are key components of the role.

Main Responsibilities:

• Maintain cancer cell lines in culture, including routine passaging of cells and maintenance of research cell banks

• Isolate primary immune cells from Whole blood or leukopaks

• Plan and execute in vitro experiments, including (a) testing nanoparticle-based formulations in whole blood or isolated immune cells, (b) analysis using flow cytometry, (c) measuring cytokine release using ELISA assays

• Carefully record findings using electronic laboratory notebooks

• Write SOPs in full detail to ensure reproducibility of the work

• Communicate results to team members and participate in meetings

• Maintain laboratory equipment

• Perform additional tasks to support research and development as the scope of the job changes as necessitated by growth of the team

About You

Basic Qualifications:

Preferred Qualifications:

• Ability to work hands-on with cells and laboratory equipment

• Willingness to work with human-derived cells and mouse tissue

• Previous hands-on laboratory research experience in an industry or academic setting

• Experience with cell culture, flow cytometry, ELISA/MSD, Incucyte live imaging, immune cell isolation from whole blood, transfection of cell lines/primary immune cells

• Strong technical/analytical skills to identify and solve problems

• Proven ability to work with a high level of integrity, accuracy, and attention to detail

• Strong organizational skills in order to maintain a high level of productivity to complete assignments on-time

• Excellent oral and written communication skills for effectively interfacing with all members of the company

• Self-motivated, enthusiastic, and results-oriented

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Pursue Progress. Discover Extraordinary.

Join Sanofi and step into a new era of science - where your growth can be just as transformative as the work we do. We invest in you to reach further, think faster, and do what’s never-been-done-before. You’ll help push boundaries, challenge convention, and build smarter solutions that reach the communities we serve. Ready to chase the miracles of science and improve people’s lives? Let’s Pursue Progress and Discover Extraordinary – together.

At Sanofi, we provide equal opportunities to all regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, protected veteran status or other characteristics protected by law.

Watch 'One day at Sanofi' and check out our Diversity Equity and Inclusion initiatives at sanofi.com