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Senior Scientist, MSAT

Synthorx

Synthorx

Framingham, MA, USA
USD 122,250-176,583.33 / year
Posted on Sep 24, 2025

Job Title: Senior Scientist, MSAT

Location: Framingham, MA

About the Job

We deliver 4.3 billion healthcare solutions to people every year, thanks to the flawless planning and meticulous eye for detail of our Manufacturing & Supply teams. With your talent and ambition, we can do even more to protect people from infectious diseases and bring hope to patients and their families.

The Senior Scientist will be responsible for developing and executing bioassays for various biologic modalities while collaborating cross-functionally within the Global MSAT organization and interfacing with Development/CMC, Quality, Manufacturing, and external partners.

We are an innovative global healthcare company with one purpose: to chase the miracles of science to improve people’s lives. We’re 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:

  • Develop and execute bioassays, binding and immunoassays for various biologic modalities, including, mAbs, ADCs, multi-specific antibodies, enzymes and recombinant proteins, and other biologic modalities

  • Lead and perform method qualification and transfers in/out of the department

  • Develop and implement technology platforms, including novel techniques and technologies

  • Create and execute study plans independently and with guidance from the direct manager and other SMEs

  • Collaborate cross-functionally within Global MSAT and interface with Development/CMC, Quality, Manufacturing, and CMO/CROs

  • Serve as representative on cross functional teams including Sanofi network teams, technology transfer teams, and project teams

  • Lead and perform characterization and comparability studies

  • Author protocols, technical reports, data analyses, process investigations, and procedures

  • Contribute to control strategy establishment in bioassays, immunoassays, and binding assays

  • Support regulatory filings as needed

  • May supervise associates or junior scientists

About You

Basic Qualifications:

  • PhD with 5+ years' experience OR Master’s degree with 7+ years' experience OR Bachelor’s degree with 9+ years' experience

  • Experience in Biopharmaceutical Industry

  • Degree preferably in Cell Biology, Biochemistry, Molecular Biology, immunology or similar field

  • 5+ years’ experience with bioassays and immunoassays

  • Knowledge of mammalian cell culture and commercial protein purification processes

  • Experience with bioanalytical equipment and software

  • Experience in analytical method development/troubleshooting

  • Supervisory experience (managing and developing staff)

  • Project management skills

Preferred Qualifications:

  • In-depth understanding of regulatory requirements for CMC analytical development

  • Expertise in flow cytometry and bioassay/immunoassay development

  • Strong statistical knowledge and demonstrated practical applications

  • Experience with novel biologic modalities (gene/cell therapies, RNA based therapeutics)

  • Demonstrated potential to serve as a bioassay/immunoassay SME

  • Track record of scientific publications in bioassays and immunoassays

Competencies/Other Skills:

  • Highly organized and detail-oriented

  • Demonstrated ability to work independently and collaboratively

  • Strong written and oral communication skills; excellent presentation abilities

  • Proven ability to work in a matrix and highly technical environment

  • Flexibility to adjust to a fast-paced, goal-oriented environment

  • Willingness to expand and broaden skillset.

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.

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:

$122,250.00 - $176,583.33

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.