Manufacturing and Supply
Where the
miracles of
science are made
a reality for patients
Scientist 1 MSAT
At a glance
Our teams produce and deliver over 4 billion units of medicines and vaccines every year, ensuring every breakthrough gets to the people who need it most.
Our state-of-the-art facilities, AI-powered smart factories, and cutting-edge automation are redefining what’s possible: ensuring treatments reach patients faster, safer, and more sustainably than ever before. This is where your skills, ambition, and passion can shape the future of healthcare.
Job Title:Scientist 1 MSAT
Location:Framingham, MA
About the Job
The Scientist I will develop and execute bioassays across various biologic modalities in support of commercial manufacturing and continuous improvement initiatives. In addition, this role will support Stability study management and the execution of biochemical and biophysical assays, as needed.
Join a global network that powers how Sanofi delivers — seamlessly, purposefully, and at scale. In Manufacturing & Supply, you’ll help reimagine how life-changing treatments reach people everywhere, faster.
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 lives.
Main Responsibilities
Execute cell-based assays and immunoassays to assess product potency, biological activity, and impurities (e.g., residual DNA, HCPs) in support of late-stage programs, commercial biologics, and life cycle management programs
Develop and optimize analytical methods including cell-based assays, ELISA, and flow cytometry for MSAT projects and technology transfer activities; perform general biochemical and biophysical assays under SME supervision, as needed
Perform method qualification and transfer in and out of the department
Work with analytical leads and relevant stakeholders to support sample stability studies
Ensure timely completion of assignments and deliverables; independently design and execute complex experiments under general supervision
Participate in characterization and comparability studies
Author protocols, method development/technical reports, data analysis summaries, and investigation reports
Write and review method documentation and characterization reports in support of regulatory filings
Collaborate with other scientists in the team, as well as interact cross-functionally in the Global MSAT organization and interface functions and organizations, such as CMC, Quality, Manufacturing, CMO/CROs as appropriate
About You
Basic qualifications:
PhD with 0–1+ years' experience in the biopharmaceutical industry, OR Master's degree with 3+ years' experience, OR Bachelor's degree with 6+ years' experience in the pharma/biotech industry within analytical development
Scientific background in cell biology, biochemistry, molecular biology, immunology, or a related field
3+ years hands-on experience with cell-based assays, immunoassays (e.g., ELISA), and/or flow cytometry in a laboratory setting
Experience in experimental design, method development, and qualification
Strong analytical and problem-solving skills with the ability to troubleshoot complex assay issues and interpret scientific data
Knowledge of mammalian cell culture and commercial protein purification processes
Experience with bioanalytical equipment, software, and statistical tools for high-level data analysis
Proficiency in data analysis tools and laboratory information management systems.
Skills and Competencies:
Highly organized and detail-oriented with a demonstrated commitment to quality and accuracy
Able to work independently and collaboratively within cross-functional teams and with external partners; enthusiastic, self-motivated, and agile in responding to urgent requests, with the initiative to lead new tasks
Excellent written and oral communication skills with the ability to present complex technical information clearly
Strong time management and ability to prioritize multiple projects
Ability to work full-time onsite in an analytical lab environment
Preferred qualifications:
Experience with method development, method qualification, and/or validation
Knowledge and hands-on experience with sample stability testing and management
Hands-on experience and comprehensive knowledge of other biochemical and biophysical techniques, including but not limited to U/HPLC, CGE,cIEF, spectroscopy, and particle analysis
Familiarity with biologics manufacturing (monoclonal antibodies, vaccines, or other biotherapeutics)
Experience working on highly technical projects requiring adaptability and responsiveness.
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.
Take good care of yourself and your family, with a wide range of health and wellbeing benefits including high-quality healthcare, prevention andwellness programs and at least 14 weeks’gender-neutral parental leave.
Shape the future of medicine and vaccine delivery with cutting-edge technology, ensuring seamless launches and a resilient global supply.
Power industry-leading performance by leveraging digital, data, and AI-driven innovation – at speed and scale
Transform lives worldwide by delivering life-changing treatments anywhere, anytime.
Sanofi Inc. and its U.S. affiliates are Equal Opportunity employers committed to a culturally inclusive 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.
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All compensation will be determined commensurate with demonstrated experience. Employees may be eligible to participate in Company employee benefit programs, and additional benefits information can be found here.
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.
Final compensation will be determined based on demonstrated experience, skills, location, and other relevant factors. Employees may be eligible to participate in Company employee benefit programs.
Find out more about this location
Why work with us
- We’re problem-solvers and pioneers. United by the belief that everyone deserves a healthier future. We create best-in-class vaccines that prevent disease and protect lives.
- Innovation drives us. From AI and mRNA to next-gen science, we push the boundaries to deliver first- and best-in-class vaccines for infectious diseases worldwide.
- Growth happens here. With bold investments in R&D and world-class facilities, Sanofians across the entire vaccine lifecycle are shaping the future of global health.
- We do what’s right. Sustainability and DE&I drive our positive global impact—because the diverse communities Sanofians represent are the patients we serve.
All-in on diversity
At Sanofi, diverse perspectives fuel the best solutions for patients. Hear from Monique Vessey, our Supply Chain Transformation Leader, on how her background shapes her approach to delivering life-changing medicines.
"Manufacturing and Supply is the bridge between the science that happens in research laboratories and the people and communities we serve."
Brendan O’Callaghan
Executive Vice President of Manufacturing and Supply
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