Senior Associate Scientist; Bioassay Development

Job title: Senior Associate Scientist (Bioassay Development)

Location: Framingham, MA

Sanofi’s Analytical Development team within Mammalian Bioanalytics seeks a highly motivated Senior Associate Scientist to develop, validate, and transfer analytical methods used for characterization and release of biologics supporting clinical development of new medicines.

• Participate in the development, qualification, validation, and transfer of qPCR, ELISA, MSD, cell‑based assays and potentially other analytical methods in a regulated GMP environment.
• Perform routine cell‑culture activities such as thawing, passaging, and banking cells.
• Cross‑train in separation techniques such as cIEF, CE‑SDS and SEC and support GMP release and stability testing as needed.
• Perform cGMP sample testing according to SOPs and compile data packets.
• Assist in drafting SOPs and technical reports and effectively communicate progress and experimental results to supervisor and team members.
• Support analytical equipment maintenance by performing regular scheduled activities to maintain a GMP‑compliant laboratory.
• Ensure timely completion and delivery of all analytical results and documentation (technical reports, SOPs, ELN, LIMS, etc.) during clinical phases.

• B.S. degree in Biology, Biochemistry, Immunology, Biotechnology, or a related life‑sciences discipline with a minimum of 1 year of relevant experience.
• Understanding of biological, biochemical, and biophysical methods.
• Organized, efficient, and able to work according to timelines.
• Excellent organizational and communication skills.
• Ability to collaborate in a fast‑paced, team‑oriented environment.
• Permanent U.S. work authorization.

• Competitive salary range: $75,000 – $108,333.
• Thoughtful rewards package that recognizes contributions.
• High‑quality health and wellness benefits, including prevention programs.
• At least 14 weeks of gender‑neutral parental leave.
• Opportunity to work at the frontier of drug discovery with AI, data, and digital platforms.
• Career growth through promotions, lateral moves, and international opportunities.

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, citizenship, marital status, disability, veteran or military status, gender identity or expression, sexual orientation, domestic partnership status, or any other characteristic protected by law.