Senior Medical Science Liaison, Oncology

Eisai US

. Serve as a field-facing representative of US Medical Affairs .

Posted 9/22/2026full-timeRemote • Massachusetts • United StatesSenior💰 $149,300 - $195,900 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates advanced knowledge in medical and health sciences, particularly in Oncology/Hematology, with the ability to effectively communicate scientific information to healthcare providers and key opinion leaders. Proven experience in strategic thinking, mentoring, and leading cross-functional projects within the pharmaceutical industry.

Highest-signal resume keywords

Advanced Doctorate Degree (MD, PhD, PharmD, DPH, EdD)3+ Years MSL Experience in Oncology/HematologyStrong Scientific and Pharmaceutical KnowledgeEstablished Relationships with Key Opinion LeadersExcellent Presentation and Teaching Skills

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Clinical Research ProcessesFDA RegulationsOIG GuidelinesTreatment GuidelinesScientific Data PresentationMedical Affairs Strategy ExecutionInvestigator-Initiated Studies FacilitationHome-Based Office SetupSound Computer SkillsCross-Functional Problem Solving

Soft Skills

Strong Written and Verbal Communication SkillsStrategic ThinkingCoaching and MentoringAbility to Handle Multiple PrioritiesIndependent Work Capability

Industry Keywords

Pharma/Biotech IndustryOncologyHematologyMedical AffairsHealthcare ProvidersKey Opinion LeadersClinical PharmacistPopulation-Based Decision MakersEisai Therapeutic AreasProfessional Organizations

About the role

Key responsibilities & impact

Serve as a field-facing representative of US Medical Affairs
Exchange scientific, medical, and other information with healthcare providers, researchers, professional organization leadership, and population-based decision makers
Understand customer needs, issues, and priorities in relation to Eisai’s strategic business plan
Bring field insights on research developments, treatment landscapes, and new medical treatment concepts
Communicate key information about Eisai and its human health care mission
Provide scientific and clinical information about Eisai products
Facilitate communication between Eisai Research and the medical community regarding future research ideas
Provide leadership through strategic thinking, special projects, coaching, and mentoring
Act as the primary clinical/scientific resource to HCPs in the territory
Serve as a conduit for clinical, scientific, and medical information between KOLs/investigators and Medical Affairs and development groups
Establish and maintain peer relationships with KOLs
Conduct scientific exchanges with KOLs
Present clinical, scientific, and economic data to population-based decision-makers
Support and potentially lead professional congress coverage
Identify and report scientific, clinical, and research insights from KOLs
Develop and present territory plans supporting Medical Affairs strategy
Maintain current knowledge of disease states, study methodology, clinical information, and product data
Execute approved medical platforms, strategies, and MSL initiatives
Serve as a technical/scientific resource to commercial personnel when requested
Teach, coach, and mentor less experienced MSLs; assist with supervision and performance evaluation
Facilitate review and follow-up of Investigator-Initiated Studies and assist with Eisai-sponsored trials
Serve as primary contact for external investigators submitting Investigator-Initiated Studies
Provide recommendations for site selection and scientific expertise for sponsored post-marketing studies
Lead field medical efforts supporting professional organizations, societies, and advocacy groups

Requirements

What you’ll need

Advanced, terminal Doctorate level (D-level) degree in medical or health sciences (e.g. MD, PhD, PharmD, DPH, EdD)
For MSL: 0–3 years of experience in the pharma/biotech industry, clinical pharmacist, research, or related experience in a scientific or clinical setting, preferably as MSL
For Sr. MSL: minimum of 3 years MSL experience in Oncology/Hematology
Strong broad-based scientific and pharmaceutical knowledge
Knowledge of treatment guidelines, clinical research processes, FDA regulations, and OIG guidelines
Knowledge and experience within Eisai desired therapeutic areas
Established relationships with key opinion leaders and knowledge of relevant institutions
Excellent presentation and teaching skills
Strong written and verbal communication skills
Ability to assess issues and think strategically
Cross-functional working experience
Ability to anticipate, organize, plan, and handle multiple changing priorities
Ability to work independently while adhering to Medical Affairs strategic direction
Ability and interest in coaching and mentoring less experienced MSLs
Ability to lead and motivate team members without a direct reporting relationship
Ability to lead and participate in projects while balancing projects with field work
Ability to analyze complex situations and solve cross-functional problems
Sound computer skills, including word processing, slide materials, and spreadsheets
Previous established relationships with KOLs in Oncology/Hematology
Understanding of the pharmaceutical corporate environment and commercial operations
Ability to engage in frequent business travel (approximately 60%), including air travel, overnight travel, and occasional weekend travel
Ability to travel domestically and internationally
Valid driver’s license
Ability to set up a home-based office
Ability to engage in person with HCPs and other third parties regularly
May be required to complete third-party credentialing and/or entry requirements, including vaccination attestations or proof
Work authorization verification through E-Verify for new hires in the United States

Benefits

Comp & perks

Eisai Inc. Annual Incentive Plan
Eisai Inc. Long Term Incentive Plan
Company employee benefit programs
Certain other benefits may be available
Reasonable accommodations for qualifying medical or religious reasons