
Vaccines
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extraordinary minds
help protect half a billion people
mRNA - LNP Drug Product Fill Finish Specialist
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: mRNA - LNP Drug Product Fill Finish Specialist
Location: Waltham, MA
About the Job
The mRNA - LNP Drug Product Fill-Finish Specialist will support Fill Finish manufacturing campaigns at Sanofi sites and external CMOs. The specialist will work under the guidance of the Drug Product Development and Industrialization Team, within the CMC Process Development & Industrialization group in the Sanofi mRNA Center of Excellence. All products will be mRNA-based vaccines and/or therapeutics.
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 as a Subject Matter Expert (SME) and provide technical support to enable knowledge and process transfer for fDP manufacturing.
Support the harmonization of fDP processes across different manufacturing sites (local and international).
Support technical activities required to onboard new CMOs/manufacturing sites for fDP manufacturing.
Responsible for authoring and/or reviewing technical reports, batch records, knowledge transfer documents, work instructions, and risk assessments to support process implementation at manufacturing site(s).
Participate in CMC project teams on fDP fill finish topic, contribute to the development of detailed CMC project plans and overall program execution.
Engage with key stakeholders to ensure transparency on program status and alignment on program plans, goals, resource requirements and timelines.
Troubleshoot process issues that occur during tech transfer and in production of drug product. Consult with QA and Regulatory teams as needed.
Contribute to IND filings/regulatory documentation.
About You
Required Qualifications
Work Experience: 15+ years of experience in fill/finish of pharmaceutical drug products
Education: Master's degree in a scientific or related field is the minimum requirement. PhD or PharmD preferred
Language Requirements: English (required); knowledge of French is desired
Preferred Qualifications:
Deep understanding of cGMPs and manufacturing activities including: aseptic filling, filter validation and visual inspection
Prior experience with mRNA-LNP products is desired
Reviews and contributes to deviations during fDP manufacturing and contributes to any follow-up investigations
Excellent technical writing skills as applied to the generation of investigation reports
Proficient in Microsoft Office (Excel, Word and PowerPoint)
Strong time management and prioritization 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 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.
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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
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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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