
Vaccines
Where
extraordinary minds
help protect half a billion people
Clinical Immunology Lead - Vaccines
Waltham, Massachusetts Salary Range USD 147,000.00 - 212,333.33
Who we are
Every day, 2.5 million Sanofi vaccine doses reach patients worldwide - powered by bold ideas, cutting-edge science, and passionate people like you. Across every stage — from discovery to delivery — Sanofians are shaping the future of vaccines. In global R&D hubs, exceptional offices, and state-of-the-art manufacturing sites, we’re reimagining what’s possible. But science alone isn’t enough — it’s the extraordinary minds behind it that truly make the difference.
Job Title: Clinical Immunology Lead - Vaccines
Location: Waltham, MA or Swiftwater, PA
About the Job
Sanofi is recruiting for a Clinical Immunology Lead to support a diverse and maturing portfolio of vaccines targeting infectious diseases. This role provides strategic guidance and operational support for immunogenicity, virologic, and bacterial endpoints in late-stage clinical trials. As a part of the global project team, the successful applicant will contribute to the development of clinical protocols, provide scientific and technical support for regulatory communications and filings, as well as define the strategy for clinical endpoints and develop serology, mucosal/cell mediated immunogenicity, efficacy-supporting diagnostics, and next generation sequencing endpoints for a late stage program. The successful applicant will operate at an extremely fast pace, working with other global project team members including physicians, regulatory leaders, CMC representatives, discovery scientists, and assay development experts.
We are an innovative global healthcare company that helps the world stay ahead of infectious diseases by delivering more than 500 million vaccine doses a year. Across different countries, our talented teams are exploring new technologies to protect people and promote healthy communities. We chase the miracles of science every single day, pursuing progress to make a real impact on millions of patients around the world.
Main Responsibilities:
Represent Global Immunology (GI) on the global project team to design, execute, and communicate data from clinical trials from multiple late-stage programs
Write/review regulatory documents such as INDs, CTDs, Clinical Trial Protocols, CSRs, and e-BLA sections
Ensure the development and qualification/validation of robust immunologic, virologic, and bacteriologic assays that meet ICH guidelines to support clinical studies
Support and coordinate all clinical testing activities (internal or at third party laboratories) related to Project including communication of resource needs, assisting Lab Coordinators with scheduling for routine testing and with the Scientists/Lead technicians for test development or troubleshooting by providing the necessary scientific expertise
Liaise with biosamples leadership to determine key components of sample lifecycle (biospecimens being collected, biospecimen collection kit composition, biospecimen handling and stability, etc.), and to generate the analysis testing plan
Scientifically review and provide interpretation of both assay development and clinical development data and experimental designs
Serve as function representative and SME at key strategic internal/external meetings, conferences/congresses, and key meetings with CROs and with regulatory authorities
Lead and influence evaluation and improvement of new/existing technologies
Act as a contributing author to high-quality publications describing assay development and/or the immunogenicity and efficacy of candidate and approved drugs in technical, medical, or scientific journals
Management of Key Interfaces
Work closely within Sanofi Vaccines (both R&D and Medical), including One Operations (1 Ops), Global Clinical Development (GCD), leaders in Global Antigen Design (GAD), mRNA Center of Excellence and various medical franchise teams to ensure that clinical testing strategy is designed to maximize scientific quality and timeliness whilst operating within budget targets
Collaborate with Head of Strategic Alliances and Head of Global Clinical immunology to ensure strategy for assay development, validation, and testing is performed according to plan and within expected timelines
People and Organization
Provide scientific guidance and line of sight to product development to inspire and motivate internal and external stakeholders to continuously strive for excellence
Model Inclusion and Diversity principles and behaviors in all ways of working
Strengthen the team and the company by creating a winning spirit and by developing excellence-oriented and customer-focused culture, while fostering innovation
About You
Minimum Requirements:
Masters degreein Virology, Bacteriology, Immunology, Molecular Biology, Microbiology, Cell Biology, or other relevant scientific field
PhD in the above mentioned fields is preferred
5+ years of experience in immunology, vaccines, antiviral or monoclonal antibody development with some experience supporting the clinical development of vaccines
Skills & Capabilities:
Familiarity with laboratory testing regulations both internally and externally (CROs)
Entrepreneurial mindset with positive energy and strong sense of determination
Record of innovation as evidenced by a strong publication record, inventorship on patents/filings and presentations at major conferences
Proven leadership, verbal and written communication, organizational and team management skills
Proven ability to develop and implement new procedures/processes
Project management and computer skills required
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 a 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
- We’re problem-solvers and pioneers. United by the belief that everyone deserves a healthier future. We create best-in-class vaccines that prevent disease and protect lives.
- Innovation drives us. From AI and mRNA to next-gen science, we push the boundaries to deliver first- and best-in-class vaccines for infectious diseases worldwide.
- Growth happens here. With bold investments in R&D and world-class facilities, Sanofians across the entire vaccine lifecycle are shaping the future of global health.
- We do what’s right. Sustainability and DE&I drive our positive global impact—because the diverse communities Sanofians represent are the patients we serve.
What does it take to protect the world from disease?
For over a century, we’ve been pioneering breakthroughs that help protect millions from diseases like polio, influenza, RSV, and more. And we’re not stopping there.
Powered by groundbreaking technologies - mRNA platforms, recombinant proteins, and AI-driven insights - we’re pushing the boundaries of science.

"I’m immensely proud of the pace of our innovation – the urgency by which our teams are working to transform the practice of medicine."

Thomas Triomphe
Executive Vice President, Vaccines
Discover more

Sanofi’s mRNA Center of Excellence
Step into the future of healthcare with Sanofi’s mRNA Center of Excellence. Discover how a global team is transforming medicine with cutting-edge mRNA technology – and explore the skills, inspirations, and breakthroughs driving this revolution. Ready to shape the future?

About Sanofi Vaccines
Explore our commitment to protecting global health through the power of vaccines. We’re building healthier communities with innovative solutions that save millions of lives each year. Dive into the future of vaccines, discover the diseases we’re tackling, and learn why vaccination is critical at every stage of life.

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