Sanofi Pasteur Inc.
Bioassay Development Senior Scientist
Framingham, MA · Senior
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odds of building a lasting career here
Sponsors, but it's cap-subject — you still face the weighted lottery (~30% per draw at Level II). Good if you win; have a cap-exempt backup on your list.
Lottery odds assume a STEM candidate.
Personalize to your clock →H-1B wage level
the lottery is wage-weighted — each level is one more entry
The bottom of this range ($50,000) is below the Level I prevailing wage of $90,730. An H-1B cannot be filed below the prevailing wage, so an offer at the floor of this band could not be sponsored as posted.
Based on the DOL prevailing wage for this occupation and worksite, a base salary of $114,795 would place this position at wage Level II. That figure is within the posted range, and I'd like to target it. This role classifies under "Biochemists and Biophysicists" for prevailing-wage purposes.
DOL prevailing wage, 2026-27 wage year · Biochemists and Biophysicists (19-1021) · Boston-Cambridge-Newton, MA-NH. Wage level is derived by USCIS from the offered wage, occupation and worksite; the occupation shown is inferred from the job title.
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Sourced from Department of Labor LCA, PERM and prevailing-wage disclosure data. Employer matching is by name, so figures may be split across an employer's legal entities. Absence of a filing means none appears in our copy of the data, not that none exists.
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About the role
- Job Title: Bioassay Development Senior Scientist - Location: Framingham, MA About the job: Sanofi is committed to being a world-class biologics research organization, striving to bring next generation, transformative therapies to patients.
- 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.
Responsibilities
- Apply scientific expertise and judgement to initiate, design, direct and execute analytical experiments to develop and qualify relative potency methods for early and late-stage clinical molecules.
- Support mAb and bi/tri-specific development as well as other modalities such as viral and non-viral gene therapy.
- Maintain good documentation practices using the electronic lab notebook system.
- Maintain GMP compliance by following GMP procedures in the laboratory, by supporting routine maintenance activities in the department, and by training on drafting appropriate SOPs.
- Collaborate closely with interdisciplinary and cross-functional teams, including biologists, chemists, quality, legal and other stakeholders.
- Lead and contribute to high-profile presentations and publications, ensuring effective communication of research findings and methodologies.
- Support the growth of the team by mentoring interns and junior scientists, sharing knowledge and fostering a collaborative research environment.
- Collaborate with CROs and CDMOs for training, outsourced activities, co-validation or testing.
- Drive progress from within by helping simplify, scale, and modernize how a global biopharma business delivers smarter, faster, and more sustainably.
- Support teams across science, medicine, and operations by building better systems, shaping bold strategies, and enabling innovation at speed.
Requirements
- PhD in Molecular Biology, Cell Biology, Biochemistry, Biotechnology, Immunology, Microbiology, Biomedical Sciences, Life Sciences or a related field with a with a minimum of 1 year of relevant research experience.
- OR a Master's degree in one of the above or related fields with at least 4 years of relevant experience.
- Experience in mammalian cell culture and either engineering cell lines or transgenic model systems.
- Extensive experience in at least two of the following cell and molecular biology techniques: qPCR, Western blotting, and plate-based assays (e.g., ELISA, fluorescence-based assays).
- PhD in Molecular Biology, Cell Biology, Biochemistry, Biotechnology, Immunology, Microbiology, Biomedical Sciences, Life Sciences or a related field with a with a minimum of 1 year of relevant research experience. Academic research, thesis work, co-ops, and/or internships will be considered.
- OR a Master's degree in one of the above or related fields with at least 4 years of relevant experience. Academic research experience will be considered.
- Strong time management skills to execute in a dynamic, fast-paced environment.
- Excellent organization and scientific communication skills.
Nice to have
- Experience with SnapGene, Softmax, luminometer or relative potency statistical analyses
- Knowledge of a biologics' standard analytical methods and controls
- Make your work count by supporting a company that brings life-changing treatments to millions - and is committed to doing right by patients, communities, and the planet.
- Make an impact across borders and functions, collaborating with leaders to turn complex challenges into real-world solutions.
- Thrive in inclusive, high-performing teams where every role matters and every voice helps shape what's next.
- Sanofi US Services 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
- marital, domestic partnership or civil union status
Compensation
- All compensation will be determined commensurate with demonstrated experience.
Benefits
- Employees may be eligible to participate in Company employee benefit programs, and additional benefits information can be found here.
Company info
- We're an R&D-driven, AI-powered biopharma company committed to improving people's lives and delivering compelling growth.
This listing is sourced directly from Sanofi Pasteur Inc.'s careers page and normalized into a canonical job model.