Medical Science Liaison

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Job title: Medical Scientific Liaison (Vaccine)
* Location: Tokyo, Japan

About the job
As Medical Scientific Liaison (Vaccine) within our Vaccines Medical team, you'll be the vital connection between cutting-edge vaccine science and healthcare professionals across Japan, building trusted relationships and sharing scientific insights that help protect millions of lives. Ready to get started?
Join the team protecting half a billion lives every year with next-gen science, mRNA innovation, and AI-driven breakthroughs. In Vaccines, you'll help advance prevention on a global scale - and shape the future of immunization. As a field-based MSL, you'll serve as the extension of our medical function, developing enduring partnerships with key opinion leaders and healthcare institutions throughout Japan.

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:
* Build and maintain trusted scientific partnerships with healthcare professionals, key opinion leaders, and medical institutions across Japan through proactive field engagement
* Deliver high-quality, balanced scientific information during one-to-one interactions and group settings, responding to unsolicited requests with accuracy and expertise
* Organize and facilitate local scientific meetings including hospital staff meetings and webinars, aligned with stakeholder engagement and country medical plans
* Generate valuable insights from field interactions and collaborate with internal teams to inform medical strategy and evidence-generation activities
* Support investigator-initiated research submissions and manage local advisory boards in full compliance with regulatory requirements
* Communicate the clinical value of vaccine products to healthcare decision-makers and contribute to population health outcomes
* Travel extensively (80%) across Japan to engage with healthcare professionals and build meaningful scientific relationships

About you
* Education: MD, Pharmacy degree, or postgraduate science degree
* Experience: Background in stakeholder strategy, planning, and engagement within healthcare or pharmaceutical settings
* Technical skills: Strong disease and therapeutic area knowledge, proficiency with CRM tools, and ability to deliver impactful scientific exchanges across multiple channels and formats
* Soft skills: Strategic thinking, business acumen, excellent interpersonal relationship building, transversal collaboration abilities, and learning agility
* Languages: Native Japanese with intermediate level spoken and written business English

Why choose us?
* Work at the forefront of AI-driven research, smart manufacturing, and groundbreaking mRNA platforms that are redefining the future of immunology
* Help protect half a billion people every year, contributing to one of the largest global vaccination efforts in healthcare
* Make the impossible possible for millions by contributing to breakthrough moments like the world's first RSV toddler vaccine
* Share knowledge with leading scientists, healthcare professionals, and experts in a purpose-driven community dedicated to protecting millions worldwide
* Develop your career with access to mentoring, international mobility programs, and opportunities to grow across four continents
* Experience the dynamic nature of field-based work, connecting directly with healthcare professionals and making a tangible impact across Japan
* Join a workplace where diversity, equity, and inclusion are at the core, with Employee Resource Groups and leadership programs that celebrate every voice

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.

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