Medical Science Liaison/Senior Medical Science Liaison - Infectious Diseases / Antimicrobial Resistance - West

Waltz Health

Waltz Health

San Francisco, CA, USA

Posted on May 22, 2026

Company Description

At EVERSANA, we are proud to be certified as a Great Place to Work across the globe. We’re fueled by our vision to create a healthier world. How? Our global team of more than 7,000 employees is committed to creating and delivering next-generation commercialization services to the life sciences industry. We are grounded in our cultural beliefs and serve more than 650 clients ranging from innovative biotech start-ups to established pharmaceutical companies. Our products, services and solutions help bring innovative therapies to market and support the patients who depend on them. Our jobs, skills and talents are unique, but together we make an impact every day. Join us!

Across our growing organization, we embrace diversity in backgrounds and experiences. Improving patient lives around the world is a priority, and we need people from all backgrounds and swaths of life to help build the future of the healthcare and the life sciences industry. We believe our people make all the difference in cultivating an inclusive culture that embraces our cultural beliefs. We are deliberate and self-reflective about the kind of team and culture we are building. We look for team members that are not only strong in their own aptitudes but also who care deeply about EVERSANA, our people, clients and most importantly, the patients we serve. We are EVERSANA.

Job Description

The Infectious Diseases / Antimicrobial Resistance Medical Science Liaison/Senior Medical Science Liaison functions as a highly trained, field-based, medical affairs scientific expert in the area of Multi-Drug resistant Gram-negative pathogens. Our client is entering the U.S. market with a novel antibiotic targeting multi-drug-resistant Gram-negative pathogens, addressing a critical and growing global health crisis. The MSL/ SR MSL reports to the National Director MSLs.

The Medical Science Liaison (MSL) will serve as a strategic scientific partner and field-based clinical expert, responsible for driving scientific engagement, medical strategy execution, and appropriate clinical Information across hospitals and health systems.

Unlike traditional MSL roles, this position requires deep expertise in:
• Antimicrobial resistance (AMR)
• Hospital-based care pathways
• Antimicrobial stewardship integration

The MSL will operate at the intersection of science, public health, and health system decision-making, ensuring that our client's therapies are used appropriately, timely, and effectively.

Following regulatory and corporate guidelines, they will facilitate and build scientific relationships and collaborations with the INFECTIOUS DISEASE scientific community. This position interacts with local, regional, and national Key Opinion Leaders (KOLs) and health care practitioners (HCPs), as well as professional societies and organizations. The Antimicrobial/Infectious Disease MSL will need to be fully engaged with Infectious Disease Professional Societies, as well as other value-based institutions and associations including clinics and centers that are involved with the management and treatment of infections which result from multi-drug resistant gram-negative pathogens.

ESSENTIAL DUTIES AND RESPONSIBILITIES:
Our employees are tasked with delivering excellent business results through the efforts of their teams. These results are achieved by:

  • Function as the primary point of contact in the field for Medical Deployment.
  • Maintain clinical, scientific, and technical expertise in Infectious Diseases / Antimicrobial Resistance, with specific focus in Multi-Drug-Resistant Gram-Negative Pathogen infections standards of care.
  • Have a thorough understanding of the clinical protocols and related procedures
  • Develop and track key opinion leader (KOL) engagement plans - identify, develop, and maintain long-term collaborative relationships with KOLs within assigned region.
  • Scientific Exchange & Thought Leader Engagement:
    • Establish and maintain peer-to-peer scientific relationships with:
      • Infectious Disease physicians
      • Intensivists
      • ID pharmacists & microbiologists
      • Antimicrobial Stewardship Committees (ASC)
    • Serve as a trusted scientific resource, ensuring accurate interpretation of data and deliver balanced, evidence-based scientific exchange on:
      • Clinical trial data
      • Resistance mechanisms
      • Novel mechanisms of action
      • Patient selection and treatment pathways
    • Support and lead medical & scientific exchange with the medical/scientific community including advisory boards, scientific exchange programs and Congress engagement.
    • Responsible for ongoing territory management and development, including KOL tracking.
  • KOL Strategy & Network Development:
    • Identify, map, and engage national, regional, and institutional KOLs
    • Build relationships across Academic medical centers, Integrated Delivery Networks (IDNs) and Community hospital systems
  • Antimicrobial Stewardship & Health System Integration
    • Engage directly with:
      • Antimicrobial Stewardship Programs (ASP)
      • Pharmacy & Therapeutics (P&T) Committees
    • Support development of:
      • Clinical pathways
      • Antibiotic treatment protocols
      • Institutional guidelines
      • Precision Antibiotic Stewardship informed by rapid diagnostic testing
    • Provide expertise on:
      • Optimal antibiotic selection, dosing, and duration
      • Resistance mitigation strategies
      • Appropriate patient targeting
    • Responsible for all clinical program requests and for unsolicited requests for information.
      • May collaborate with R&D Team to support sites and investigators participating in the company-sponsored clinical trials.
    • Conduct pre-launch KOL profiling efforts to enhance depth of product/disease/scientific knowledge. Facilitate top account/institution profiling efforts to enhance understanding of patient care pathways, including treatment protocol development.
  • Launch Excellence & Market Shaping:
    • Support pre-launch and launch activities, including:
      • Scientific education programs
      • Disease state awareness initiatives
    • Inform appropriate clinical positioning within hospital systems and relevant physicians and stakeholders
    • Partner cross-functionally to ensure aligned, compliant launch execution
    • Work collaboratively and compliantly with commercial colleagues to assure product strategic imperatives are represented cross functionally in account engagement,
  • Insights Generation & Strategic Impact:
    • Collect, analyze, and communicate field-based insights, including:
      • Local resistance patterns
      • Diagnostic and treatment gaps
      • Barriers to adoption
    • Provide actionable intelligence to:
      • Medical strategy
      • Clinical development
      • Market access
    • Respond to and document unsolicited requests for information on clinical initiatives.
    • Be solidly versed in the clinical data such that the full range of innovative science, clinical, outcome, economic and value aspects of the Company’s products can be appreciated by the healthcare practitioner, formulary member or payer
  • Research & Evidence Generation:
    • Identify and support:
      • Investigator-initiated trials (IITs)
      • Real-world evidence (RWE) studies
      • Outcomes research initiatives
    • Collaborate with clinical teams on:
      • Trial site identification
      • Investigator engagement
  • Diagnostics & Innovation Integration (Advanced Capability:)
    • Partner with healthcare systems to understand:
      • Rapid diagnostics
      • Microbiology lab workflows
      • Timeliness of accurate antibiotic selection
    • Support strategies linking:
    • Diagnostics → targeted antibiotic use → improved outcomes
  • Cross-Functional Collaboration & Internal Leadership:
    • Provide medical support, clinical input, and/or training to internal teams as requested.
    • Serve as the scientific interface between:
      • Medical Affairs
      • Market Access
      • Commercial (within compliance boundaries)
    • Provide: Internal training and scientific support for strategic initiatives
    • Operate effectively in a matrixed environment
    • Represent the Company at medical meetings through Medical Affairs’ Scientific Booth coverage and other related activities.
    • Attend congresses as appropriate and develop meaningful internal reports of the congresses covered.
    • Adhere to corporate SOPs and ensure vigilant compliance with relevant legal and regulatory guidelines governing scientific interactions with physicians and healthcare professionals across all activities, including those related to clinical trials, scientific interactions with internal and external groups, and responses to unsolicited requests for medical/scientific information.
    • Consistently demonstrate a high standard of excellence in the management of assigned territory while also contributing to the success of colleagues and the MSL team.
    • Willingness to contribute to the achievement of organizational goals beyond the borders of a geographic territory.

Qualifications

MINIMUM KNOWLEDGE, SKILLS AND ABILITIES:

The requirements listed below are representative of the experience, education, knowledge, skill and/or abilities required.

  • Advanced, terminal degree required (e.g. Pharm.D., Ph.D., M.D.) or equivalent.
  • 3–8+ years in Medical Affairs / MSL role preferred
  • MSL: A minimum of 3 years previous MSL experience necessary with a minimum of 1 year in Infectious Diseases / Antimicrobial Resistance.
  • Sr. MSL: A minimum of 5 years of Pharma experience and 3 years of Infectious Diseases / Antimicrobial Resistance experience. History of successful experience shaping scientific narrative and engaging in higher-order dialogue (e.g., data interpretation, evidence gaps, evolving standards of care) Often handles the most complex or sensitive scientific engagements, representing the field on global medical teams indication working groups, advisory planning committees.
  • Infectious Diseases / Antimicrobial Resistance experience strongly preferred for both positions.
  • Strong expertise in:
    • Infectious diseases
    • Hospital-based therapeutics
    • Critical care / microbiology (preferred)
  • Prior product launch experience highly preferred
  • Experience with Hospital / IDN engagement, antimicrobial stewardship programs
  • Exhibits the highest level of scientific, business, and clinical acumen with excellent communication and networking skills.
  • The ability to interpret and present scientific data to engage KOLs
  • Deep understanding of:
    • Antimicrobial resistance (AMR)
    • Gram-negative pathogens
    • Hospital treatment pathways
  • Ability to:
    • Interpret and communicate complex clinical data
    • Build credibility with high-level clinical stakeholders
    • Increase scientific share of influence without authority in complex systems
  • Excellent written and oral presentation skills
  • Ability to travel frequently (50-70%) with overnight stays (e.g., KOL meetings, site locations, internal meetings, medical meetings and congresses, training).

Additional Information

OUR CULTURAL BELIEFS

Patient Minded I act with the patient’s best interest in mind.

Client Delight I own every client experience and its impact on results.

Take Action I am empowered and hold myself accountable.

Embrace Diversity I create an environment of awareness and respect.

Grow Talent I own my development and invest in the development of others.

Win Together I passionately connect with anyone, anywhere, anytime to achieve results.

Communication Matters I speak up to create transparent, thoughtful, and timely dialogue.

Always Innovate I am bold and creative in everything I do.

Our team is aware of recent fraudulent job offers in the market, misrepresenting EVERSANA. Recruitment fraud is a sophisticated scam commonly perpetrated through online services using fake websites, unsolicited e-mails, or even text messages claiming to be a legitimate company. Some of these scams request personal information and even payment for training or job application fees. Please know EVERSANA would never require personal information nor payment of any kind during the employment process. We respect the personal rights of all candidates looking to explore careers at EVERSANA.

EVERSANA is committed to providing competitive salaries and benefits for all employees. If this job posting includes a base salary range, it represents the low and high end of the salary range for this position and is not applicable to locations outside of the U.S. Compensation will be determined based on relevant experience, other job-related qualifications/skills, and geographic location (to account for comparative cost of living). More information about EVERSANA’s benefits package can be found at eversana.com/careers. EVERSANA reserves the right to modify this base salary range and benefits at any time.

From EVERSANA’s inception, Diversity, Equity & Inclusion have always been key to our success. We are an Equal Opportunity Employer, and our employees are people with different strengths, experiences, and backgrounds who share a passion for improving the lives of patients and leading innovation within the healthcare industry. Diversity not only includes race and gender identity, but also age, disability status, veteran status, sexual orientation, religion, and many other parts of one’s identity. All of our employees’ points of view are key to our success, and inclusion is everyone's responsibility.

Consistent with the Americans with Disabilities Act (ADA) and applicable state and local laws, it is the policy of EVERSANA to provide reasonable accommodation when requested by a qualified applicant or candidate with a disability, unless such accommodation would cause an undue hardship for EVERSANA. The policy regarding requests for reasonable accommodations applies to all aspects of the hiring process. If reasonable accommodation is needed to participate in the interview and hiring process, please contact us at [email protected].

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