Job title: Senior Scientist

• Location: Cambridge, MA

About the Job

At Sanofi we are committed in our quest to be a world-class biologics research organization and are steadfast in our goal to bring next generation, transformative therapies to patients. Our global Large Molecule Research (LMR) organization is focused on antibodies and NANOBODY molecules as therapeutic modalities. Our platform enables and partners closely with other research platforms and Sanofi’s therapeutic areas (Immunology & Inflammation, Immuno-Oncology, Rare & Neurologic Diseases) in the discovery and ultimate delivery of new candidate molecules.

We are seeking an exceptional and highly motivated Senior Scientist to join our innovative team in the Molecular, Expression and Screening Technologies (MEST) Group within Sanofi's North America R&D LMR organization. The successful candidate will serve as a scientific leader expert in ultra-high-throughput protein and antibody expression, driving the development and optimization of next-generation production platforms that support therapeutic candidates designed by state-of-the-art AI/ML models and structural biology. In addition to overseeing day-to-day operations of cutting-edge automated systems, the candidate will play a pivotal role in shaping the strategic direction of the high-throughput expression platform, identifying opportunities for innovation, and championing cross-functional scientific initiatives across MEST and LMR (Antibody Discovery, Protein Production, and Protein Engineering). The candidate will be expected to independently lead complex projects, mentor junior scientists, and contribute to the broader scientific community through publications, patents, and conference presentations.

The demand for production of complex protein variants continues to grow significantly year on year, and this role will be instrumental in designing scalable, forward-looking solutions to meet and anticipate those needs. The ideal candidate brings deep expertise in mammalian expression systems, automation technologies, and data-driven approaches to protein production, combined with the scientific vision and leadership skills to drive platform evolution.

Join the engine of Sanofi’s mission — where deep immunoscience meets bold, AI-powered research. In R&D, you’ll drive breakthroughs that could turn the impossible into possible for millions.

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 people’s lives.

Main responsibilities:

• Lead the design, optimization, and implementation of ultra-high-throughput protein and antibody expression platforms supporting therapeutic discovery

• Oversee day-to-day operations of cutting-edge automated systems (Tecan/Hamilton) and integrated robotic platforms, ensuring optimal performance

• Drive innovation and scalability of the high-throughput expression platform to meet growing demand for complex protein variant production

• Independently manage multiple complex projects simultaneously in a fast-paced, matrixed R&D environment

• Partner with cross-functional teams (Antibody Discovery, Protein Production, Protein Engineering) to advance LMR initiatives and align on platform strategies

• Develop and implement data-driven approaches to protein production using biological registration and data management systems (Genedata Biologics, Spotfire, Pipeline Pilot)

• Mentor junior scientists and foster a culture of scientific excellence within the team

• Present complex scientific findings to senior leadership and external partners; contribute through publications, patents, and conference presentations

• Identify and evaluate emerging technologies and methodologies to maintain competitive advantage in large molecule research

About You

Education:

• Master’s degree with minimum 2 years of experience in a research laboratory or a biopharma/biotech company OR

• Bachelor’s degree in biology or related field with minimum 4 years of experience in a research laboratory or a biopharma/biotech company.

Experience & Technical Skills:

• Extensive experience designing, optimizing, and leading high-throughput automation workflows using advanced liquid handling platforms (Tecan/Hamilton) and integrated robotic systems.

• Deep expertise in transient mammalian protein and antibody expression, including troubleshooting complex expression challenges, optimization of transfection strategies using recombinant DNA and developing novel solutions.

• Strong experience with biological registration and data management systems (e.g., Genedata Biologics, Spotfire, Pipeline Pilot) and the ability to drive improvements in data integrity and workflow efficiency.

• Advanced proficiency in Microsoft Excel and the broader Microsoft Office suite.

Soft Skills:

• Exceptional organizational, time management, and communication skills, with the ability to influence and align diverse scientific and cross-functional stakeholders.

• Proven ability to independently lead and manage multiple complex projects simultaneously, with a track record of delivering results in a fast-paced, matrixed environment.

• Demonstrated experience presenting complex scientific findings to senior leadership, external partners, and broad scientific audiences in a clear, compelling, and strategic manner.

• Experience contributing to or leading platform development initiatives, technology transfers, or process improvement programs within a pharmaceutical or biotechnology R&D environment.

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 and wellness programs and at least 14 weeks’ gender-neutral parental leave.

• Be part of a pioneering biopharma company that engages patients early in drug development and uses their insights to design studies that reflect real-world needs.

• Help improve the lives of millions of people globally by making drug development quicker and more effective.

• Work at the forefront of drug discovery, harnessing cutting-edge AI, data, and digital platforms to push the boundaries of science.

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.

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Pursue progress, discover extraordinary

Better is out there. Better medications, better outcomes, better science. But progress doesn’t happen without people – people from different backgrounds, in different locations, doing different roles, all united by one thing: a desire to make miracles happen. So, let’s be those people.

At Sanofi, we provide equal opportunities to all regardless of race, colour, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, ability or gender identity.

Watch our ALL IN video and check out our Diversity Equity and Inclusion actions at sanofi.com!

US and Puerto Rico Residents Only

Sanofi Inc. and its U.S. affiliates are Equal Opportunity and Affirmative Action employers committed to a culturally inclusive and diverse workforce. All qualified applicants will receive consideration for employment without regard to race; color; creed; religion; national origin; age; ancestry; nationality; natural or protective hairstyles; 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.

North America Applicants Only

The salary range for this position is:

$85.500,00 - $123.500,00

All compensation will be determined commensurate with demonstrated experience. Employees may be eligible to participate in Company employee benefit programs. Additional benefits information can be found through the LINK.