**Job Title:** Winter, Spring 2026 Co-op-Intern – Immunology Checkpoint Cluster **Location:** Cambridge, MA **About the Job** Are you ready to shape the future of medicine? The race is on to speed up drug discovery and development to find answers for patients and their families. Your skills could be critical in helping our teams accelerate progress. Sanofi's Immunology & Inflammation (I&I) Checkpoint Cluster is seeking a motivated and talented co-op student to join our innovative research team. This position offers a unique opportunity to contribute to cutting-edge research in immunobiology and its applications in treating inflammatory diseases. We are an innovative global healthcare company with one purpose: to chase the miracles of science to improve people’s lives. We’re also a company where you can flourish and grow your career, with countless opportunities to explore, make connections with people, and stretch the limits of what you thought was possible. Ready to get started?​ **Main Responsibilities:** + Assist in the execution of in vitro experiments focusing on immune pathways. + Support the development and optimization of cell-based assays for evaluating immunomodulatory therapeutics. + Contribute to the analysis of flow cytometry data and other immunological readouts. + Participate in the maintenance of cell cultures and preparation of reagents. + Assist in data collection, analysis, and presentation at team meetings. + Contribute to laboratory organization and maintenance of equipment. + Collaborate with team members on ongoing research projects in a matrix environment. **About You** M **ust be permanently authorized to work in the U.S. and must 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** **Basic Qualifications:** + Currently enrolled and pursuing a bachelor's or master's degree in Immunology, Biology, Biotechnology, or related field at an accredited college or university with the expectation that you will complete your current degree by the Spring of 2027 + Must be able to relocate to the office location and work 40hrs/week, Monday-Friday, for the full duration of the co-op/internship **Preferred Qualifications:** + Strong academic background and experience in cell biology, preferably including coursework in mammalian immunology. + Basic laboratory skills including aseptic technique, mammalian cell culture, and protein analysis. + Excellent analytical and problem-solving skills. + Strong attention to detail and ability to maintain accurate records. + Self-motivation, maturity, and strong drive to quickly learn and master new technical skills + Good communication skills and ability to work effectively in a team environment. + Previous or current lab bench research experience in immunology or a related field. + Experience with primary human (blood) immune cell isolation and culture. + Familiarity with basic flow cytometry and data analysis. + Knowledge of checkpoint inhibitor biology and its role in inflammation **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, 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. 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)