Medical Science Liaison (MSL) / Senior MSL – Oncology
Location: Phoenix, AZ / Southern California (Field-Based)
Department: Medical Affairs – US
Job Type: Full-Time
Salary Range: $127,400 – $234,520 (dependent on experience and organizational factors)
Company Overview
Astellas Pharma Inc. is a global biopharmaceutical leader with operations in over 70 countries, dedicated to translating innovative science into medical solutions that improve patient outcomes. With a focus on unmet medical needs and conducting business with integrity, Astellas develops therapies that bring meaningful value to patients, caregivers, and healthcare providers worldwide. Learn more at www.astellas.com.
Position Summary
Astellas is seeking a Medical Science Liaison (MSL) / Senior MSL – Oncology to join our Medical Affairs team covering Arizona and Southern California. This field-based role requires travel to engage Key External Experts (KEEs), healthcare providers, and other stakeholders.
The MSL will act as a trusted scientific advisor, delivering peer-to-peer scientific exchange, medical insights, and educational solutions throughout the product life cycle. The role also supports evidence generation, identifies emerging stakeholders, and ensures the integration of field insights into medical and strategic planning.
Key Responsibilities
Field Medical Leadership
Execute tactical field plans in alignment with medical strategy and overall business objectives
Serve as a coach, mentor, and role model for other MSLs
Contribute to the deployment of medical and scientific initiatives within the region
Scientific Exchange & Expertise
Conduct one-on-one and group scientific exchanges regarding product knowledge, disease states, and therapeutic trends
Maintain deep understanding of local healthcare dynamics and stakeholder needs
Support medical education activities and peer-to-peer learning within internal teams
Engage with KEEs, nurses, pharmacists, and other stakeholders to identify and communicate medical insights
Medical Insight & Evidence Generation
Capture and report field-derived insights to inform clinical development and medical strategies
Support evidence generation activities to identify data gaps and unmet needs
Collaborate with cross-functional teams including Research & Development, Regulatory Affairs, and Commercial teams
Qualifications & Experience
Education: Doctorate in Health-Related Sciences (MD, PhD, PharmD, DNP, DO)
Experience:
3–5 years of scientific/medical experience in a research-based pharmaceutical organization
Minimum 2–3 years in Medical Affairs or MSL roles
Key Competencies:
Expertise in scientific exchange and peer-to-peer communication
Strong ability to generate and analyze medical insights
Excellent interpersonal and collaboration skills
Learning agility and strategic thinking
Business-fluent English
Working Environment & Travel
Field-based position covering Arizona and Southern California
Frequent travel required to achieve Medical Affairs objectives
Compensation & Benefits
Competitive base salary ($127,400 – $234,520)
Medical, dental, and vision insurance
Generous Paid Time Off, including vacation, sick leave, and national holidays
401(k) match and annual company contribution
Company-paid life insurance
Annual corporate bonus and quarterly sales incentive for eligible positions
Long-Term Incentive Plan for eligible positions
Company fleet vehicle for eligible positions
Employee referral bonus program
Why Join Astellas?
Contribute to the development of innovative oncology therapies
Engage with leading healthcare stakeholders and KEEs
Join a diverse and inclusive global organization committed to improving patient health worldwide
Astellas is an equal opportunity employer, including Disability and Protected Veterans.
Apply Now
Qualified candidates will be reviewed by our recruitment team. Shortlisted candidates will be contacted for interviews and next steps.
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