Medical Science Liaison (MSL) / Senior Medical Science Liaison (Sr. MSL), Oncology

• Southern CA, NV and HI
• Field-based Eisai United States, Nevada, Las Vegas Aug 24, 2026 At Eisai, satisfying unmet medical needs and increasing the benefits healthcare provides to patients, their families, and caregivers is Eisai's human health care (hhc) mission.

We're a growing pharmaceutical company that is breaking through in neurology and oncology, with a strong emphasis on research and development. Our history includes the development of many innovative medicines, notably the discovery of the world's most widely-used treatment for Alzheimer's disease. As we continue to expand, we are seeking highly-motivated individuals who want to work in a fast-paced environment and make a difference. If this is your profile, we want to hear from you. The Medical Science Liaison (MSL) / Senior Medical Science Liaison (Sr. MSL) is a field-facing representative of US Medical Affairs with a primary responsibility of engaging in the exchange of scientific data and other medical and/or scientific information with external customers (healthcare providers, researchers, professional organization leadership, and population-based decision makers) in the areas of Eisai's interest. The person in this position will demonstrate a thorough understanding of the customer's needs, issues and priorities as they relate to Eisai's strategic business plan. The MSL/Sr. MSL brings relevant insights from the field on research developments, treatment landscape and new concepts in medical treatment. The MSL/Sr. MSL will assume a leadership role by teaching, coaching and mentoring new or less experienced MSLs and by assuming responsibility for special projects as they arise. The impact that a MSL/Sr. MSL will have on the organization includes the following: a) as a representative of Eisai, the MSL/Sr. MSL will communicate key information about Eisai, the company and its hhc mission; b) provide key scientific and clinical information about Eisai's products; serve as a conduit for communication between Eisai Research and the medical community regarding ideas for future research with Eisai's products, and c) provide corporate value through demonstrated leadership and participation in strategic thinking. The Medical Science Liaison (MSL) / Senior Medical Science Liaison (Sr. MSL) is a field-facing representative of US Medical Affairs with a primary responsibility of engaging in the exchange of scientific data and other medical and/or scientific information with external customers (healthcare providers, researchers, professional organization leadership, and population-based decision makers) in the areas of Eisai's interest. The person in this position will demonstrate a thorough understanding of the customer's needs, issues and priorities as they relate to Eisai's strategic business plan. The MSL/Sr. MSL brings relevant insights from the field on research developments, treatment landscape and new concepts in medical treatment. The MSL/Sr. MSL will assume a leadership role by teaching, coaching and mentoring new or less experienced MSLs and by assuming responsibility for special projects as they arise. The impact that a MSL/Sr. MSL will have on the organization includes the following: a) as a representative of Eisai, the MSL/Sr. MSL will communicate key information about Eisai, the company and its hhc mission;b) provide key scientific and clinical information about Eisai's products; serve as a conduit for communication between Eisai Research and the medical community regarding ideas for future research with Eisai's products, and c) provide corporate value through demonstrated leadership and participation in strategic thinking. Essential Functions Product/Therapeutic Area Support to External Stakeholders Act as the primary clinical/scientific resource toHealthcare Providers(HCPs) in the territory for information pertaining to disease state and Eisai's product(s) to ensure awareness and understanding. Serve as a conduit for accurate and updated clinical, scientific and medical information between Key Opinion Leaders (KOLs)/investigators and the company's Medical Affairs and development groups. Establish, foster, cultivate and maintain peer relationships with KOLs in the therapeutic areas in which Eisai has current and future interests. Share knowledge and participate in scientific exchanges and interactions with identified KOLs. Present clinical, scientific and economic data on Eisai's products and relevant therapeutic areas to population-based decision-makers, as requested. Support assigned professional congresses in accordance with MSL plan. Be prepared to lead congress coverage efforts, including coordination of all MSL/Sr. MSLactivities, as required and assigned by the management. Identify and report key scientific, clinical and research insights from KOLs to Medical Affairs. Develop, implement and present to management plans to support Medical Affairs strategic direction for assigned territory. Training/Education Resource Maintain and demonstrate thorough and up-to-date knowledge of disease state, study methodology, clinical information, and product data. Demonstrate full knowledge of and ability to execute on approved medical platforms/strategies and MSL initiatives. Serve as technical/scientific subject matter resource to Eisai commercial personnel, if requested. Teach, coach and mentor new or less experienced MSLs; assist with supervision/performanceevaluation;assume responsibility for special projects. Provide valuable contributions to the organization including leadership and strategic planning. Research Support Facilitate review and follow up of submitted Investigator-InitiatedStudies(IISs) and assist with Eisai sponsored trials. Serve as primary contact to external investigators who submit IISs. The MSL may also be involved with providing recommendations for site selection and scientific expertise to Investigators involved in company sponsored post-marketing studies. Professional Organization Support Lead field medical efforts in support of Eisai's collaboration and interactions with professional organizations/societies&advocacy groups, as required. Educational Requirements Requires an advanced, terminal Doctorate level (D-level) degree in medical or health sciences (e.g. MD, PhD, PharmD, DPH, EdD). Experience For MSL 0-3years of experience in the pharma/biotech industry/clinical pharmacist/research/ related experience in a scientific or clinical setting, preferably as MSL. For Sr. MSL, a minimum of 3 years MSL experience in Oncology/Hematology. Strong broad-based scientific and pharmaceutical knowledge. Clinical trial development and drug launch experience is strongly preferred. Knowledge of treatment guidelines, clinical research processes, FDA regulations and OIG guidelines are required. Knowledge and experience within Eisai desired therapeutic area(s) and ability to communicate with confidence and accuracy across multiple disease states. Established relationships with key opinion leaders and knowledge of institutions in therapeutic areas of interest.

Other Skills and Abilities:

Excellent presentation and teaching skills. Strong overall written and verbal communication skills. Demonstrated ability to assess issues and think strategically. Demonstrated ability and experience working cross-functionally. Demonstrated ability to anticipate, organize, plan and handle multiple changing priorities. Demonstrated ability to work independently and not requiring close supervision 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 and interest in leading and participating in projects while effectively balancing projects with field work. Demonstrated ability to analyze complex situations and proactively identify opportunities/issues;effectivelysolve problems that cross functional boundaries. Committed to the concept of team and working within the framework of the Medical Affairs Department and Eisai organization, including as it pertains to compliance with policies, systems and practices. Sound computer skills including applications for word processing, producing slide materials and working with spreadsheets. Previous established relationships with KOLs in Oncology/Hematology. Possesses anunderstandingof the pharmaceutical corporate environment and appreciation for commercialoperations,including marketing and sales strategies. Capable of engaging in frequent business travel (approximately 60% of time), including air travel, ability to travel overnight and occasionally on weekends. Domestic and international travel may include spending time at cancer trial sites/institutions, conference center, offices and hotels. Possesses and maintains a valid driver's license. This is a field-based position. The employee is required to set up a home-based office. Salary range for MSL is $144,300.00

• $189,400 USD Annual Salary range for Sr. MSL is $160,100.00
• $216,900 USD Annual #LI-MI1 As a condition of employment and an essential function of this field-based position, applicants must be able to engage in person with HCPs and other third parties at their offices, institutions and other appropriate locations on a regular basis.

In order to gain in-person access, applicants selected for the position may be required to complete third parties' credentialing and/or entry requirements, which often include an attestation to and/or providing proof of having received certain vaccinations. To the extent you are unable to meet certain requirements for qualifying medical (including pregnancy-related) or religious reasons, applicants must request a reasonable accommodation by contacting the Human Resources Department.

Skills:

Communication & Cross-functional Influence, Critical Thinking & Agility, Healthcare Environment Dynamics, KOL/ HCP Engagement, Medical Data and Insights, Mentoring, Resource Planning & Management, Territory Management (MSL)

Eisai Salary Transparency Language:

The annual base salary range for the Medical Science Liaison (MSL) / Senior Medical Science Liaison (Sr. MSL), Oncology

• Southern CA, NV and HI
• Field-based is from :$165,300
• 216,900 Under current guidelines, this position is eligible to participate in : Eisai Inc.

Annual Incentive Plan & Eisai Inc. Long Term Incentive Plan. Final pay determinations will depend on various factors including but not limited to experience level, education, knowledge, and skills. Employees are eligible to participate in Company employee benefit programs. For additional information on Company employee benefits programs, visit https://careers.eisai.com/us/en/compensation-and-benefits. Certain other benefits may be available for this position, please discuss any questions with your recruiter. Eisai is an equal opportunity employer and as such, is committed in policy and in practice to recruit, hire, train, and promote in all job qualifications without regard to race, color, religion, gender, age, national origin, citizenship status, marital status, sexual orientation, gender identity, disability or veteran status. Similarly, considering the need for reasonable accommodations, Eisai prohibits discrimination against persons because of disability, including disabled veterans. Eisai Inc. participates in E-Verify. E-Verify is an Internet based system operated by the Department of Homeland Security in partnership with the Social Security Administration that allows participating employers to electronically verify the employment eligibility of all new hires in the United States. Please click on the following link for more information: Right To Work E-Verify Participation