Medical Science Liaison

Vaxcyte

Vaxcyte

San Carlos, CA, USA

USD 184k-215k / year + Equity

Posted on Apr 28, 2026
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Join our Mission to Protect Humankind!

Vaxcyte is a clinical-stage vaccine innovation company engineering high-fidelity vaccines to protect humankind from the consequences of bacterial diseases, which have serious and costly health consequences when left unchecked. Working to eradicate or treat bacterial infections such as invasive pneumococcal disease, Group A Strep, and Shigella is just the beginning. Our path to success is clear and well-defined, and Vaxcyte is set up to go the distance.
WHAT we do is every bit as important as HOW we do it! Our work together is guided by four enduring core values:
*RETHINK CONVENTION: We bring creative and intellectual diversity to every facet of the work we do in order to innovate and re-innovate the way vaccines are delivered.
*AIM HIGH: We embody our collectively audacious goal to courageously make the most complex biologics ever attempted to protect humankind.
*LEAD WITH HEART: Everyone leads at Vaxcyte with a kindness-first, inclusive approach to collaboration and vigorous debate that advances our business objectives.
*MODEL EXCELLENCE: The magnitude of our challenge requires our shared commitment to demonstrating integrity, accountability, equality and clarity across communications and decision making.

Summary:

We are seeking a scientifically driven and communicative Medical Science Liaison (MSL) to join our Medical Affairs team. The Medical Science Liaison (MSL) serves as a scientific expert in immunization and pneumococcal disease prevention. This field-based role will serve as a trusted scientific partner to healthcare providers, public health officials, and key opinion leaders (KOLs) to support vaccine education, clinical development, and real-world evidence generation.

Depending on experience, the role may be leveled at Senior MSL, offering expanded responsibilities in strategic leadership and mentorship.

Essential Functions:

  • Stakeholder Management: Build and maintain scientific relationships with key opinion leaders, clinicians, researchers, and public health stakeholders.
  • Scientific Engagement: Communicate epidemiological, clinical and real-world data regarding pneumococcal disease and Vaxcyte’s candidate vaccine.
  • Evidence Generation Support: Where relevant, support investigator-initiated studies and clinical trial recruitment in vaccine research.
  • Insight Collection and cross-functional collaboration: Gather and share field insights on pneumococcal disease landscape, vaccine data needs, and recommendation scenarios.
  • Education and Engagement: Represent the company at scientific meetings, conferences, and stakeholder events.
  • Compliance: Uphold ethical standards and regulatory guidelines in all field activities.

Requirements:

  • Advanced degree (PhD, PharmD, MD, MPH) in life sciences, immunology, or public health preferred.
  • A minimum of 5 years of experience in medical affairs, clinical research, or infectious disease.
  • Strong knowledge of immunology and vaccine development.
  • Excellent communication skills with ability to address scientific and public health audiences.
  • Travel: MSL positions are field-based and require significant travel, which can vary depending on the assigned territory.
  • Ability to travel up to 70% of the time.
  • Other combinations of education and/or experience may be considered.
Reports to: Senior Director, Medical Affairs
Location: Remote - United States
Compensation:
The compensation package will be competitive and includes comprehensive benefits and an equity component.
Salary Range: $184,000 - $215,000

We are an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status.

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