**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:** + Currentlyenrolled andpursuing a bachelor's or master's degree in biology, chemistry, immunology, pharmaceutical Sciences, bioengineering, biomaterials, biochemistry, or related fieldat an accredited4-yearcollege oruniversitywiththe expectation that you will complete yourcurrent degreebytheSpring of 2028 + Must be enrolled in an accredited college or university throughout the duration of the co-op/internship + Must be able torelocateto 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** **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 **Why Choose Us:** + Bring the miracles of science to life alongside a supportive, future-focused team. + Discover endless opportunities to grow your talent and drive your career, whetherit’sthrough a promotion or lateral move, at home or internationally. + Enjoy a thoughtful, well-crafted rewards package that recognizes your contribution and amplifies your impact. + Exposuretocutting-edgetechnologies and research methodologies. + Networking opportunities within Sanofi and the broader biotech community. Sanofi Inc. and its U.S. affiliates are Equal Opportunity and Affirmative Action employers committed to a culturally diverse workforce. All qualified applicants will receive consideration for employment without regard to race; color; creed; religion; national origin; age; ancestry; nationality; marital, domestic partnership or civil union status; sex, gender, gender identity or expression; affectional or sexual orientation; disability; veteran or military status or liability for military status; domestic violence victim status; atypical cellular or blood trait; genetic information (including the refusal to submit to genetic testing) or any other characteristic protected by law. \#GD-SA \#LI-SA \#LI-Onsite \#vhd **Pursue** **_progress_** **, discover** **_extraordinary_** Better is out there. Better medications, better outcomes, better science. But progress doesn’t happen without people – people from different backgrounds, in different locations, doing different roles, all united by one thing: a desire to make miracles happen. So, let’s be those people. At Sanofi, we provide equal opportunities to all regardless of race, colour, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, ability or gender identity. Watch our ALL IN video (https://www.youtube.com/watch?v=SkpDBZ-CJKw&t=67s) and check out our Diversity Equity and Inclusion actions at sanofi.com (https://www.sanofi.com/en/our-responsibility/equality-and-inclusiveness) ! _US and Puerto Rico Residents Only_ Sanofi Inc. and its U.S. affiliates are Equal Opportunity and Affirmative Action employers committed to a culturally inclusive and diverse workforce. All qualified applicants will receive consideration for employment without regard to race; color; creed; religion; national origin; age; ancestry; nationality; natural or protective hairstyles; marital, domestic partnership or civil union status; sex, gender, gender identity or expression; affectional or sexual orientation; disability; veteran or military status or liability for military status; domestic violence victim status; atypical cellular or blood trait; genetic information (including the refusal to submit to genetic testing) or any other characteristic protected by law. Global Terms & Conditions and Data Privacy Statement (https://www.sanofi.com/en/careers/global-terms-and-conditions/) Sanofi is dedicated to supporting people through their health challenges. We are a global biopharmaceutical company focused on human health. We prevent illness with vaccines, provide innovative treatments to fight pain and ease suffering. We stand by the few who suffer from rare diseases and the millions with long-term chronic conditions. With more than 100,000 people in 100 countries, Sanofi is transforming scientific innovation into healthcare solutions around the globe. Discover more about us visiting www.sanofi.com or via our movie We are Sanofi (https://youtu.be/96EwNjb1TLo) As an organization, we change the practice of medicine; reinvent the way we work; and enable people to be their best versions in career and life. We are constantly moving and growing, making sure our people grow with us. Our working environment helps us build a dynamic and inclusive workplace operating on trust and respect and allows employees to live the life they want to live. All in for Diversity, Equity and Inclusion at Sanofi - YouTube (http://www.youtube.com/watch?v=SkpDBZ-CJKw&t=2s)