**Job Overview:** The 2025 Fall Co-Op will work in the downstream process development group of the drug substance function in Recombinant Mammalian Science, Analytics, and Technology (MSAT). The co-op will work in a laboratory setting on a project related to protein purification process characterization and protein drug substance stability. The drug substance function within Recombinant Mammalian Science, Analytics, and Technology (MSAT) is the owner of Life Cycle Management (LCM) of DS Processes within Sanofi biologics manufacturing network. We deliver innovative, robust, and cost-effective next generation processes and provide commercial manufacturing support. The function is responsible for tech transfer activities including process fit-gap assessment, process validation, prepare dossier sections, & PAI support to enable launch of new and LCM products. Our expansive portfolio covers 17 products, 5 modalities, 3 expression systems within 12 internal and external global sites in US and EU. We will be supporting launch of 20 new products in next 5 years including monoclonal and multi-specific antibodies, fusion proteins, antibody-drug conjugates, synthorins and nanobodies. In recent years we have successfully established second-generation manufacturing process with a continuous process platform. We are pursuing future innovations such as digital labs, factories of future and advanced analytics-based process understanding and control. ****** **At this time, Sanofi will not sponsor a new applicant for employment** **authorization or** **offer any immigration related support for this position (** **i.e.** **H1B, F-1 OPT, F-1 STEM OPT, F-1 CPT, J-1, TN, or another type of work authorization). ** ****** **Responsibilities:** + Work on an MSAT development project, to include execution of chromatography and filtration operations, protein stability studies, analytical testing, and data analysis. + Collaborate with the MSAT project team; attend regular team meetings and share study progress and results. + Participate in design and execution of experiments using small-scale models, analyze and interpret results, and recommend additional experiments. + Author internal presentations, protocols, and technical reports, as applicable. **Basic Qualifications:** + Currently pursuing a bachelor's or master's degree in Chemical Engineering, Biochemistry, Biotechnology, or related disciplineat an accredited college or universitywith the expectation that you will complete yourcurrent degreeby the Spring 2027   + Must be enrolled in school the semester following your internship/co-op with Sanofi.  + Must be able to relocate to the office location and work 40hrs/week, Monday-Friday, for the full duration of the co-op + Must have permanent US work authorization **Preferred Qualifications:** + Experience in a biotechnology or pharmaceutical industry laboratory setting + Experience with downstream processes at lab, pilot, or production scale including chromatography (e.g. AKTA), tangential flow filtration, or nanofiltration + Experience / interest in enzyme reactions and kinetics + Experience / interest in mechanistic modeling, coding + Strong technical writing and presentation skills **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. 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)