Scientist I Cell Line Development (contract)

Sanofi's contingent workforce program, FLEXT Direct, is seeking a Scientist I for a 12-month contract.Fully onsite role in Framingham, MA (local candidates only).Sanofi is looking for a Scientist I to support its Cell Line Development group within a mammalian expression systems platform. The team focuses on improving CHO-based cell line generation processes used to produce recombinant biologics, with an emphasis on increasing productivity, consistency, and overall process efficiency.This is a hands-on laboratory role centered on mammalian cell culture and supporting molecular biology workflows in a fast-paced, collaborative R&D environment.Key ResponsibilitiesDesign, execute, and analyze studies supporting CHO cell line development and platform optimizationGenerate and maintain mammalian cell lines (transfection pools and clonal lines) expressing recombinant proteinsPerform routine mammalian cell culture techniques including sterile technique, passaging, cell counting, and cryopreservationSupport molecular biology workflows such as plasmid prep, PCR, and restriction enzyme digestionRun multiple parallel studies aimed at improving cell line development timelines and productivityDocument experimental work and communicate results through reports, presentations, and team discussionsWork closely with cross-functional teams in a structured, protocol-driven lab environmentBasic QualificationsPhD with 0–2 years of relevant experience in Biology, Molecular Biology, or Cell Biology OR Bachelor’s/Master’s degree with equivalent industry experienceMinimum 1 year of hands-on laboratory experienceStrong experience in mammalian cell culturePreferred QualificationsExperience with CHO cell culture (strong plus)Suspension culture experience in biotech or pharmaceutical environmentsFamiliarity with molecular biology techniques such as gene editing, Gibson assembly, or copy number analysisExposure to CRISPR or plasmid engineering workflowsStrong organizational skills, attention to detail, and ability to follow structured protocolsEffective communication and strong documentation practices in a lab setting