
R&D
Where your curiosity drives the
miracles of
science
Senior Associate Scientist
At a glance
Bring your curiosity to a team where deep immunoscience meets cutting-edge innovation. Across oncology, rare diseases, neurology, and vaccines, you’ll work at the intersection of lab science and AI-powered discovery — all while collaborating across boundaries to turn breakthrough ideas into real-world impact. Whether you want to deepen your scientific expertise or grow as a leader, you’ll find the opportunity here.
Job Title: Senior Associate Scientist
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.
We are seeking an Associate Scientist to join the Genomics Medicine Unit at Sanofi and play a role in executing in vivo studies to develop best in class gene therapies. The successful candidate will support in vivo experiments to help with the development of gene therapy and other strategies addressing neurologic, neuromuscular, immunology, ocular, rare blood, renal and metabolic diseases and participate in the successful translation of pre-clinical gene therapy programs.
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:
Specifically, the successful candidate will be able to:
Execute rodent pharmacology studies that evaluate gene therapy candidates
Contribute to several experiments simultaneously and perform in a time sensitive manner
Develop and carry out research involving various animal laboratory techniques including surgery, therapeutic administration, behavioral testing, and tissue / blood collection
Communicate and coordinate with other scientists on the project team to draft, finalize, and implement study protocols. Follow protocols, standard operating procedures and independently execute tasks
Collect and record data, prepare a summary of experimental procedures and results and present data in team meetings and across disease areas to support the Genomic Medicine Unit at large
Act as an impactful contributor working in a team or as an individual member
Foster creativity, productivity, execution with a sense of urgency, teamwork, accountability and cross-functional collaboration
About You
Qualifications:
MS in life science with a minimum of 3 years of experience or BS in life science with a minimum of 6 years of experience in biotech / biopharma industry with hands on working experience using research animals is required
Demonstrated experience and expertise in multiple delivery routes of administration into mice and rats as well as an understanding of behavioral analysis tools with mice and rats is required
Surgical experience with mice and rats and the willingness to learn multiple surgical delivery techniques, including stereotaxic delivery, is preferred for the successful candidate
Candidates with experience with in vivo ocular studies in rodent models including OCT imaging and ocular dosing procedures such as intravitreal delivery are encouraged to apply
Strong background experience with rodent tissue collection and tissue collection techniques is required
Experience designing pharmacological testing in various animal models with behavioral, biochemical and physiological endpoints is a plus
Demonstratable organizational skills and attention to detail will be an advantage for the applicant
Ability to effectively communicate ideas, document and present research plus work in a collaborative environment is essential for the successful candidate
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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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.
Pursue Progress. Discover Extraordinary.
Join Sanofi and step into a new era of science - where your growth can be just as transformative as the work we do. We invest in you to reach further, think faster, and do what’s never-been-done-before. You’ll help push boundaries, challenge convention, and build smarter solutions that reach the communities we serve. Ready to chase the miracles of science and improve people’s lives? Let’s Pursue Progress and Discover Extraordinary – together.
At Sanofi, we provide equal opportunities to all regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, protected veteran status or other characteristics protected by law.
Watch 'One day at Sanofi' and check out our Diversity Equity and Inclusion initiatives at sanofi.com
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Why work with us
- Expand your horizons. Grow through curiosity, with support to move, learn, and lead in a culture that champions mentorship, mobility, and bold development.
- Accelerate results with technology. Harness the power of AI and automation to push scientific boundaries and reimagine what's possible in drug discovery.
- Impact through inclusive innovation. Help deliver better science and fairer outcomes by driving inclusive research that reaches more people, in more meaningful ways.
- Turn patient needs into breakthrough science. Drive scientific breakthroughs that start with patient needs – and end in treatments that change lives.
Meet Nils Libert, Associate Scientist
Meet Nils Libert, an Associate Scientist in Belgium, where he plays a key role in advancing groundbreaking research. Learn how his work helps drive innovation, uncover new scientific possibilities, and contribute to life-changing treatments that impact patients around the world.

"At Sanofi, we are building an R&D engine powered by the best science, digital innovation, and a commitment to transforming the lives of patients around the world."

Houman Ashrafian
EVP & Head of R&D
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