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Medical Science Liaison (MSL) / Senior Medical Science Liaison (Sr. MSL), Oncology - Texas; Field-based

Eisai

Company websiteeisai.com (Eisai, opens in new tab)

Base salary From $144,300

Employer-published annual base salary, USD. Advertised base range in United States

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  • LocationUnited States
  • WorkplaceWorkplace not stated
  • Status at last checkSource accepting applications when checked
  • Last checked (1 h ago) · observed since
All 4 locations
  • US Field Based
  • Texas, Dallas
  • Texas, Austin
  • Texas, Houston

About this job

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.

Essential Functions

Product/Therapeutic Area Support to External Stakeholders

  • Act as the primary clinical/scientific resource to Healthcare 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. MSL activities, 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/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.
  • 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 0-3 years 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; effectively solve 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 an understanding of the pharmaceutical corporate environment and appreciation for commercial operations, 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 - Texas; 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

Source: Eisai on Workday · View original posting (opens in new tab)

How this pay compares

Base floor $144,300, above 35% of the 39 Science & Research roles in Texas on this site; the other 65% list the same floor or a higher one. Observed open for 13 days so far (since Oct 26, 2026).

Pay in context

Among 39 Science & Research roles in Texas listed on this site, the median base floor is $151,100 and the middle half runs from $130,000 to $171,172. This role's floor ($144,300) is above 35% of them.

Base floors of 39 Science & Research roles in Texas

Base floors of 39 Science & Research roles in Texas$100K to $125K: 17.9% (7); $125K to $150K: 28.2% (11); $150K to $175K: 38.5% (15); $175K to $200K: 7.7% (3); $200K to $225K: 7.7% (3)0%10%20%30%40%18%10028%12538%1508%1758%200This job $144K
Each bar counts postings on this site by published base floor, in $K. The marker is this job's floor.
Table
Base floors of 39 Science & Research roles in Texas
Floor bandSharePostings
$100K to $125K17.9%7
$125K to $150K28.2%11
$150K to $175K38.5%15
$175K to $200K7.7%3
$200K to $225K7.7%3
How this is calculated
Statistic
Base floor distribution of the cohort
Formula
count of cohort postings in each $25K band of published base floor / postings in the cohort
Denominator
39 open postings with this job family in Texas
Sample size
39
Hidden when
needs at least 30 postings in the cohort
Calculation version
jobpage-analysis-v1
Data as of
2026-11-08
Employer set
Open jobs on this site that publish a base salary of $100,000 or more

Only jobs on this site count, and each one publishes a base salary of $100,000 or more, so this compares six-figure jobs with each other, not with the whole market. Computed Nov 8, 2026.

State against nationwide

Median base floor in Texas vs nationwide

Median published base floor of the same job family, in this state and across all states, next to this job's floor.
Table
Median base floor in Texas vs nationwide
Valuepostings
Science & Research, Texas$151,10039
Science & Research, all states$153K1,811
This job's base floor (marked)$144,300
How this is calculated
Statistic
Median floor, state vs nationwide
Formula
median published base floor of each cohort
Denominator
open postings of this job family
Sample size
39 in Texas; 1811 nationwide
Hidden when
needs at least 30 postings in both cohorts
Calculation version
jobpage-analysis-v1
Data as of
2026-11-08
Employer set
Open jobs on this site that publish a base salary of $100,000 or more

How Eisai pays

31 of Eisai's 47 live roles on this site list a higher base floor and 10 list a lower one. Across them the median floor is $151,040; the middle half runs from $144,300 to $188,340.

Base floors of Eisai's 47 live roles

Base floors of Eisai's 47 live roles$100K to $125K: 6.4% (3); $125K to $150K: 31.9% (15); $150K to $175K: 31.9% (15); $175K to $200K: 14.9% (7); $200K to $225K: 12.8% (6); $225K to $250K: 2.1% (1)0%10%20%30%40%6%10032%12532%15015%17513%2002%225This job $144K
Each bar counts this employer's live roles by published base floor, in $K. The marker is this job's floor.
Table
Base floors of Eisai's 47 live roles
Floor bandShareRoles
$100K to $125K6.4%3
$125K to $150K31.9%15
$150K to $175K31.9%15
$175K to $200K14.9%7
$200K to $225K12.8%6
$225K to $250K2.1%1
How this is calculated
Statistic
Employer base floor distribution
Formula
count of the employer's open roles in each $25K band of published base floor / its open roles
Denominator
47 open public roles at this employer
Sample size
47
Hidden when
needs at least 5 roles
Calculation version
jobpage-analysis-v1
Data as of
current
Employer set
Open jobs on this site that publish a base salary of $100,000 or more

Similar pay elsewhere

Other employers' Science & Research roles in Texas with the nearest published base floor to $144,300, one per employer.

This range next to 6 other live Eisai roles with the nearest advertised base floor
Chart as a table
This range next to 6 other live Eisai roles with the nearest advertised base floor
RolePublished base
Medical Science Liaison (MSL) / Senior Medical Science Liaison (Sr. MSL), Oncology - Texas; Field-based (this listing)From $144,300
Medical Science Liaison, (MSL or Sr. MSL) Neurology (Alzheimer's Disease) - Field Based - Michigan and Toledo, OHFrom $144,300
Medical Science Liaison, (MSL or Sr. MSL) Neurology (Alzheimer's Disease) - Field Based - Northern CA/Reno NVFrom $144,300
Medical Science Liaison (MSL) / Senior Medical Science Liaison (Sr. MSL), Oncology - Southern CA, NV and HI - Field-basedFrom $144,300
Medical Science Liaison (MSL) / Senior Medical Science Liaison (Sr. MSL), Oncology - Massachusetts, Maine and New Hampshire; Field-basedFrom $144,300
MSL/Senior Medical Science Liaison, Neurology (Alzheimer's Disease) - Field Based, Adirondacks (Connecticut/ Western NY/ Bronx)From $144,300
Senior Product Manager, Women's Cancer$148,200 - $194,500

Same $100K to $400K scale as every card. All Eisai roles · How to read the bar

Observed changes

No changes to the pay or listing since we first observed this role on Oct 26, 2026 (13 days ago).

  1. First observed on the employer's board
  2. Began meeting the published-salary criteria
Observed since
Employer-stated posting date
2026-07-15
Where this pay comes from

Location as the employer wrote it: US (regional bands)

Salary range for MSL is $144,300.00 - $189,400 USD Annual

Method
Employer text, read with fixed rules and re-verified
Checked
Rule set
us-base-v2

The pay passage appears in the employer's own job text. Fixed, deterministic rules located it, and the passage below was checked against the stored copy of the posting.

What we verified

  • The pay figures come from the employer's own listing, quoted exactly above.
  • The pay is an annual base salary in US dollars with a minimum of at least $100,000.
  • The role was publicly listed on the employer's job board when last checked.

We do not verify what the employer will actually offer, whether the employer is still recruiting for the role, or anything beyond what the employer published. Full methodology.

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