Associate Director, Drug Substance

Company: Sanofi
Location: Cambridge
Posted on: March 13, 2026

Job Description:

Job Title: Associate Director, Drug Substance Location : Cambridge, MA About the Job Are you ready to shape the future of medicine? The race is on to speed up drug discovery and development to find answers for patients and their families. Your skills could be critical in helping our teams accelerate progress. The Commercial Process Development team, part of the CMC Synthetics Platform within the Sanofi R&D organization, is responsible for mid-to-late-stage process development for drug substances undergoing clinical development and for the chemical process to deliver the drug substance quality target profile. The Chemical Process Development team will own the eco-design strategy for the drug substance and, in collaboration with Analytical Sciences, Process Engineering and Clinical Manufacturing/External Technologies, define the control strategy for the DS synthetic process. We strongly believe that innovation in synthetic concepts and technologies, leveraging modeling, AI/ML and integration of biocatalysis are key drivers to transform drug substance process development to deliver drug substances in the most efficient, robust, economical, environmentally benign, and intrinsically safe way. We are looking for a highly motivated and collaborative individual with expertise in synthetic organic chemistry, late-stage clinical and/or commercial development experience to join our growing Commercial Process Development team as an Associate Director. Under the direction of the Head of the Commercial Process Development, the primary responsibility of this role is to design and oversee lab-based studies to support drug substance commercial route evaluation and selection, and process optimization with the aim of generating data packages to successfully transfer technology into GMP pilot plant and manufacturing sites. Experience in the utilization of technical risk assessments throughout development to guide and prioritize process optimization studies to deliver robust drug substance manufacturing processes that meet Sanofis eco-design and economic targets and undergo successful process validation is a must. This individual may be responsible for the professional development of one or more scientists. We are an innovative global healthcare company with one purpose: to chase the miracles of science to improve peoples lives. Were also a company where you can flourish and grow your career, with countless opportunities to explore, make connections with people, and stretch the limits of what you thought was possible. Ready to get started? Main Responsibilities: Contribute to the design of novel and efficient synthetic pathways for drug substances undergoing clinical development Conduct and oversee route scouting in laboratory to demonstrate synthetic viability Use all imaginable chemistry tools and methods to develop and optimize commercial process for selected drug substance route (photochemistry, biocatalysis, flow chemistry, electrochemistry, on-line analysis/PAT, high-throughput experimentation, structural analysis, computational chemistry, etc.) Design, plan and execute experimental plans to optimize reaction, purification and isolation unit operations, guided by technical risk assessments, to deliver safe, efficient, robust and scalable drug substance manufacturing processes that perform reliably at intended scale in batch or continuous format Collaborate within project teams by working closely with analytical chemists, process engineers, pilot plant experts and project managers within the CMC Synthetics organization Communicate scientific results in a clear, concise, and accurate manner via electronic laboratory notebook documentation, development reports, project discussions and presentations Lead tech transfer of processes to the pilot plant and manufacturing sites including support for technical and HSE risk assessments, review of Master Batch Records, and campaign coverage for key batches as appropriate Provide concise technical presentations to communicate work to project teams, cross functional teams and management. Document all work on projects and continuous improvements in eLNB experiments and summarize in technical reports Establish/extend external network by providing representation and leadership on academic, industrial, or government sponsored collaborations. Steer collaboration projects to address gaps in scientific knowledge Champion continuous improvements through pursuit of scientific and technical innovations, workflow optimizations, and incorporation of digital tools About You Ph.D. in organic chemistry with a minimum of 8 years of experience or a masters degree with a minimum of 12 years of experience in process chemistry and/or commercial manufacturing organizations within the pharmaceutical industry Proven track record of developing and mentoring others to develop multi-step processes to consistently produce DS with required quality attributes using batch and continuous platforms Demonstrated experience leading drug substance teams through late-stage clinical and process validation (PPQ) An ability to operate with flexibility as part of a team in a dynamic environment with tight deadlines, engaging other scientists with complementary skill sets Strong leadership, communication and presentation skills Play to win mindset Familiar with the use of design of experiment, statistical and/or thermo-kinetic modeling to optimize and characterize chemical processes French language skills 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 its 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 and wellness programs and at least 14 weeks gender-neutral parental leave. 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; 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. GD-SA LI-SA LI-Onsite vhd 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.

Keywords: Sanofi, Revere , Associate Director, Drug Substance, Science, Research & Development , Cambridge, Massachusetts