Pfizer Jobs

Medical Scientific Liaison

Pfizer

Medical Scientific Liaison

Posted Yesterday

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Mexico City, Cuauhtémoc, Mexico City, MEX

In-Office

Mid level

Artificial Intelligence • Healthtech • Machine Learning • Natural Language Processing • Biotech • Pharmaceutical

We’re in relentless pursuit of breakthroughs that change patients’ lives.

The Role

Field-based Medical Scientific Liaison supporting Pfizer’s anti-infectives portfolio. Leads non-promotional scientific exchange with hospital-based healthcare professionals, develops KOL relationships, generates medical insights, supports clinical research and pharmacovigilance activities, and contributes to antimicrobial stewardship, infection control, and medical education initiatives. Requires a medical degree, strong infectious diseases expertise, English fluency, scientific presentation skills, and more than two years of field-based Medical Affairs or MSL experience.

Summary Generated by Built In

Location: MEX general Office (CDMX)
MAIN RESPONSIBILITIES / DUTIES
The MSL - Hospitals (Infectious Diseases) is a field-based, non-promotional Medical Affairs role for the anti-infectives portfolio. The MSL leads peer-to-peer scientific exchange with hospital-based specialists and generates medical insights, with a central focus on appropriate antimicrobial use, antimicrobial stewardship, healthcare-associated infections (HAIs), and antimicrobial resistance (AMR), while preserving a clear separation between medical and commercial activities.
Scientific Exchange & Insights

Deliver updated, balanced, non-promotional scientific information (clinical, microbiological, pharmacological/PK-PD, epidemiological, pharmacoeconomic) to hospital-based HCPs and key stakeholders.
Generate, document, and communicate high-quality medical insights from the field to inform the medical strategy of the assigned portfolio.
Engage on antimicrobial stewardship, appropriate use, HAIs, and AMR, contextualized to local resistance epidemiology and institutional needs.

KOL & Stakeholder Engagement / Medical Education

Develop and maintain relationships with KOLs, academic centers, and medical societies; identify and develop rising scientific talent (potential investigators and speakers).
Map and engage the hospital multidisciplinary ecosystem: ID services, ICU/critical care, emergency departments, clinical microbiology laboratories, hospital pharmacy, and infection-control committees.
Prepare scientific materials (with Medical Manager approval) and support congresses, medical events, and educational programs; keep local experts' content accurate.

Clinical Research (Support / Facilitation)

Support investigator and site identification, ISR proposals, and local publication input; collaborate on pharmacovigilance activities including RMP and PASS, and on inspection readiness. Study ownership, timelines, and budget remain with the responsible research function.

Cross-Functional, Medical Information & Compliance

Partner with the Medical Manager and stakeholders on treatment algorithms, guidelines, and care pathways; provide reports/metrics aligned with medical objectives.
Interact closely with Medical Information and the Drug Safety Unit (adverse-event follow-up and scientific dossiers).
Comply with training curricula and participate fully in the Inspection Readiness Process; act in full compliance with Pfizer policies (FCPA, GPIHP, PIGO).

PRINCIPAL WORKING RELATIONSHIPS
Internal: Medical Manager & Medical Department, Medical Information & Pharmacovigilance, Training, Business Technology (BT), Corporate Affairs.
External: KOLs; physicians (Infectious Diseases, Intensive/Critical Care, Emergency, Internal Medicine); clinical microbiologists; hospital pharmacists & stewardship/infection-control committees; hospitals and institutions; medical societies; payers.
REQUIRED SKILL SET
Infectious Diseases (key competencies)

Antimicrobial stewardship principles and programs (PROA/ASP); antimicrobial resistance (AMR) and local resistance epidemiology (cumulative antibiograms).
Healthcare-associated infections (HAIs) and infection-control committees; antimicrobial PK/PD in critically ill and emergency patients.
Interpretation of clinical microbiology data (identification and susceptibility) and diagnostic stewardship; familiarity with relevant guidelines (e.g., IDSA and local).

Technical & Professional

Up-to-date knowledge of local regulations; fluency in English (written and spoken); ability to prepare and deliver scientific presentations and to teach/train.
Knowledge of scientific, ethical, regulatory, and legal aspects of research in human subjects; MS Office and omnichannel engagement; project/budget administration literacy.

Behavioral / Functional

Strategic and analytical thinking; sound judgment; initiative; strong communication; teamwork; results orientation; adaptability and leadership; alignment with Pfizer values (Integrity, Innovation, Respect for People, Customer focus, Teamwork, Leadership, Performance, Community).

Education

Medical degree (required). Specialty training strongly preferred in Clinical Microbiology, Infectious Diseases, Intensive/Critical Care Medicine, or Emergency Medicine (target profile for this vacancy).

Experience

More than 2 years of experience as a Medical Scientific Liaison (MSL) or in other field-based Medical Affairs positions, preferably within the pharmaceutical industry.
Field medical engagement with hospital-based HCPs, KOLs, societies, academic centers, and institutions; knowledge of the hospital / anti-infectives setting preferred; experience in project and budget administration.

Work Location Assignment: Remote - Field Based
EEO (Equal Employment Opportunity) & Employment Eligibility
Pfizer is committed to equal opportunity in the terms and conditions of employment for all employees and job applicants without regard to race, color, religion, sex, sexual orientation, age, gender identity or gender expression, national origin, or disability.
To learn more about acceptable and prohibited uses of AI during the recruitment process, please review our candidate AI-use guidelines available on Pfizer Careers .
Medical

Skills Required

Medical degree
More than 2 years of experience as a Medical Scientific Liaison or in another field-based Medical Affairs position
Fluency in written and spoken English
Knowledge of antimicrobial stewardship, antimicrobial resistance, healthcare-associated infections, and infection control
Knowledge of antimicrobial PK/PD in critically ill and emergency patients
Ability to interpret clinical microbiology data and susceptibility results
Knowledge of relevant clinical guidelines, including IDSA and local guidelines
Knowledge of local regulations and scientific, ethical, regulatory, and legal aspects of human-subject research
Ability to prepare and deliver scientific presentations and teach or train
Experience engaging hospital-based healthcare professionals, KOLs, societies, academic centers, and institutions
Experience in project and budget administration
Specialty training in Clinical Microbiology, Infectious Diseases, Intensive/Critical Care Medicine, or Emergency Medicine
Pharmaceutical industry experience
Knowledge of the hospital and anti-infectives setting

What the Team is Saying

Pfizer Compensation & Benefits Highlights

Healthcare Strength — Health coverage is described as comprehensive, spanning medical, dental, vision, and robust mental‑health benefits, with eligible Pfizer medications available at no cost in U.S. plans. Family‑building support and transgender‑inclusive care are explicitly included, alongside wellbeing resources such as a reimbursement wallet and telehealth options.
Retirement Support — Retirement programs feature a 401(k) with company matching plus an additional Retirement Savings Contribution, complemented by company‑subsidized life, short‑term disability, and long‑term disability insurance. Materials also reference subsidized retiree medical coverage for eligible groups.
Leave & Time Off Breadth — Paid vacation, holidays, personal days, and paid parental and caregiver leave are consistently highlighted in current U.S. summaries and job postings. Options like buying extra vacation days and transition‑back support strengthen the time‑off offering.

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The Company

HQ: New York, NY

121,990 Employees

Year Founded: 1848

What We Do

Our purpose ensures that patients remain at the center of all we do. We live our purpose by sourcing the best science in the world; partnering with others in the healthcare system to improve access to our medicines; using digital technologies to enhance our drug discovery and development, as well as patient outcomes; and leading the conversation to advocate for pro-innovation/pro-patient policies.

Why Work With Us

We are the inventors, the problem solvers, the big thinkers — those who surmount any hurdle to deliver breakthrough medicines to the people who are counting on them the most.