Eisai Inc. Posted August 3, 2026

Medical Science Liaison, (MSL or Sr. MSL) Neurology (Alzheimer's Disease) - Field Based - NJ

US Field Based, United States Full time
Clinical Development Neuroscience Senior

Eisai Inc. is the source of truth for this posting and owns the application process. We surface normalized context and market comparison you won't find on the original listing.

About this opportunity

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 or 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 KOLs/HCPs, researchers, pharmacists, and decision makers in the areas of Eisai’s interest. The person in this position will demonstrate a thorough understanding of Alzheimer’s disease (AD), including the needs, issues and priorities as they relate to Eisai’s strategic medical plan. MSLs will be trained and certified on AD and Eisai’s dementia pipeline data in order to fulfill educational gaps with KOLs/HCPs and gather medical insights to refine medical strategy and continue to close the gap on unmet educational needs for AD HCPs. MSLs also assume responsibility for special internal/external projects as they arise.

The impact that a Medical Science Liaison will have on the organization includes the following: a) as a representative of Eisai, a MSL will communicate key information about Eisai, the company and its hhc mission; b) provide key scientific and clinical information about Eisai’s products/pipeline; serve as a conduit for communication between Eisai Research and the medical community regarding ideas for future research, and c) provide corporate value through demonstrated leadership, teamwork, participation in strategic thinking, and special projects.

ESSENTIAL FUNCTIONS/RESPONSIBILITIES:

Product/Therapeutic Area Support to Stakeholders

· Act as the primary clinical/scientific resource to 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 AD and dementia in which Eisai has current and future interests.

· Present clinical and scientific data on Eisai’s products and relevant therapeutic areas, as requested.

· Support assigned professional congresses in accordance with MSL plan. Be prepared to lead congress coverage efforts, including coordination of all MSL activities.

· Identify and report key scientific, clinical and research insights from KOLs to Medical Affairs.

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 cross functional partners

· Teach, coach and mentor new or less experienced MSLs; assist with supervision/performance evaluation; 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-Initiated Studies (IISs) and assist with Eisai sponsored trials.

· The MSL may also be involved with providing recommendations for site selection and scientific expertise to Investigators involved in company sponsored studies.

Qualifications:

Educational Requirements:

Advanced terminal D degree in medical or health sciences or related field (e.g MD/DO, PhD, PharmD)

Experience:

MSL experience in neurology or complex disease states preferred; prior dementia or AD research experience strongly preferred, 3 yrs+ required for Sr MSL title

Established relationships with KOLs in neurology, and knowledge of institutions focused on AD preferred

2 plus years industry/ clinical research/ related experience in a scientific or clinical setting

Strong broad-based scientific and pharmaceutical knowledge

Clinical trial development and drug launch experience is preferred

Knowledge of treatment guidelines, clinical research processes, FDA regulations, pharma regulations/compliant practices, and OIG guidelines are required

Other:

Interested and skilled in communicating complex data sets and the ability to be seen as a scientific peer while educating top KOLs

Committed to the concept of team and working within the framework of Medical Affairs

Strong overall written and verbal communication skills. Keen understanding of your audience and ability to tailor information appropriately

Highly skilled in the art of strategic conversation along with a demonstrated ability to assess issues, as they arise and adapt appropriately

Demonstrated ability to anticipate, organize, plan and handle multiple priorities, while adapting to the needs of the company and KOLs

Has an ability to work independently and not require close supervision while adhering to compliance/regulatory policies

Interest in leading and participating in projects while effectively balancing field work

Demonstrated ability to proactively identify opportunities/challenges, willingness to communicate these challenges to leadership while working together to overcome them

Seamlessly adapts to field situations and effectively problem solves within territory

Experience working in matrix environment including cross-functional commercial partners, with an understanding of the pharmaceutical corporate environment and appreciation for Commercial Operations, including Marketing and Sales strategies

Sound computer/technology skills including applications for word processing, producing slide materials, working with spreadsheets, and video conferencing.

Possesses and maintains a valid driver’s license and clean driving record

Capable of engaging in frequent business travel (approximately 60% of time), including air travel, ability to travel overnight and occasionally on weekends

This is a field-based position. The employee is required to set up a home-based office within their defined territory

#LI-MI1

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

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 or Sr. MSL) Neurology (Alzheimer's Disease) - Field Based - NJ is from :$149,300-$195,900

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

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Job details

Seniority
Senior
Function
Clinical Development
Therapeutic area
Neuroscience
Location
US Field Based, United States
Employment type
Full time

How this role compares

Computed from every other active Clinical Development role in our database, not just this employer's listings.

We currently track 244 comparable Senior Clinical Development roles across 49 biopharma companies.

244Comparable roles tracked
226Currently active
49Companies hiring similar roles
24Countries represented

Salary context

78 of 244 peers report a salary range (USD, annualized)

Peers share this role's job function and a matching or adjacent seniority level -- not necessarily the same therapeutic area or country.

This roleSubject $144,300/yr – $189,400/yr
Lowest disclosed · Patient Safety Epidemiology Associate Director · Vertex Pharmaceuticals Inc (US) $0/hr – $0/hr (≈ $0–$0/yr)
Peer group range $0 – $363,200 (median $183,250)

Where these roles are based

Top locations among the 244 comparable roles

United States109
India59
United Kingdom13
Germany8
Poland8
China6

+ 18 more countries

Seniority mix

244 of 244 peers have a known seniority level

Senior113
Associate Director102
Principal29

Therapeutic area mix

28 of 244 peers have a known therapeutic area; the rest are genuinely unlabeled, not hidden

Oncology9
Immunology7
Neuroscience6
Ophthalmology3
Dermatology & Aesthetics2
Respiratory1

Similar opportunities

The closest matches from our peer group, ranked by how similar they are, not how well you'd qualify for them -- treat this as market context, not a guaranteed shortlist; a weak match is labeled as one below.

100%similar
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90%similar
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Notify me about similar jobs

Get an email when we spot other openings like this one – same job function, comparable seniority, roles you'd actually want to see.

How we calculate "similar"

No black box, no LLM guesswork: a deterministic score built from four normalized attributes. Here's this role's own peer group at different match levels, so you can see the mechanism, not just the result.

Every comparison starts from the same 100-point budget: 25 for working in the same function, 40 for the same therapeutic area, 20 for the same or adjacent seniority, 15 for the same country. A dimension we can't confirm on both sides contributes nothing, never a guess, never a free pass.

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Unmatched or unknown dimensions score exactly the same: 0 points, never a partial guess. A role we know almost nothing about beyond its function bottoms out at 25%; it never inflates to 100% just because there's little to compare against. Seniority uses a defined ladder (Associate → Manager → Associate Director → Senior → Principal → Director → Senior Director → Executive/VP) so "Director" and "Senior Director" count as adjacent, but "Director" and "Executive/VP" do not.