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Field Medical Science Liaison Regional Director

Mirum Pharmaceuticals, Inc.
Remote friendly (United States)
United States
Medical Affairs

Role Summary

The Field Medical Science Liaison (MSL) Regional Director is a senior, field-based, hybrid Medical Affairs role designed initially as a player/coach leader. This individual serves as both a hands-on MSL and a field medical leader, responsible for building, mentoring, and leading an MSL team over time. Initially, the MSL Lead will engage directly with key external stakeholders nationally, providing high-quality, non-promotional scientific exchange, with the role evolving into a people leader position focused on field medical strategy, KOL engagement, and operational excellence across the MSL organization.

Responsibilities

  • Field Medical Engagement
    • Identify KOLs and the treatment landscape nationally, including high prevalence areas of HDV management and treatment.
    • Build peer-level relationships with KOLs, investigators, and thought leaders in hepatology, infectious disease and other appropriate specialties, maintaining trust as a scientific partner/collaborator.
    • Serve as a senior field-based MSL, conducting compliant, fair-balanced, non-promotional scientific exchange with KOLs, investigators, and other healthcare stakeholders in support of the HDV program.
    • Develop and maintain deep expertise in HDV disease state, mechanism of action, clinical data, and emerging literature.
    • Identify unmet medical needs, emerging trends, and actionable insights; communicate internally to inform strategy.
    • Support medical education activities, advisory boards, scientific congresses, and investigator-initiated research as appropriate.
  • MSL Team Leadership & Development
    • Act as a player/coach, balancing individual field responsibilities with leadership and mentorship of MSLs as the organization expands.
    • Support the expansion of the MSL organization including hiring, onboarding, training, and field readiness.
    • Coach MSLs on scientific communication, stakeholder engagement, territory planning, and insight generation.
    • Establish performance expectations, provide ongoing feedback, and support professional development.
    • Help define field medical processes, best practices, and success metrics.
    • Foster a culture of scientific excellence, collaboration, accountability, and compliance.
  • Strategy & Cross-Functional Collaboration
    • Contribute to the development and execution of field medical strategy aligned with Medical Affairs objectives.
    • Support Medical Affairs initiatives across clinical development, launch readiness, and lifecycle management.
    • Work compliantly with cross-functional partners to support the brand strategy through effective communication of scientific information.
    • Provide leadership input into launch planning, resourcing, and long-term Medical Affairs organizational design.
    • Ensure all activities are conducted in compliance with company policies, SOPs, and applicable regulations.

Qualifications

  • Required:
    • Advanced scientific degree (PhD, PharmD, MD, DO, PA, NP or equivalent).
    • 5+ years of experience in Medical Affairs or MSL roles within biotech or pharmaceutical companies.
    • Significant field-based MSL experience with a strong record of scientific engagement.
    • Excellent scientific communication and relationship-building skills.
    • Ability to work effectively in a fast-paced, growth-oriented biotech environment.
    • Willingness to travel extensively (approximately 50–70%).
  • Preferred:
    • 1-2 years of prior people management experience or formal team leadership.
    • Experience building or scaling an MSL team.
    • Hepatology, infectious disease, or rare disease experience
    • Experience in early-stage or high-growth biotech organizations.

Skills

  • Adherence to corporate values and a player/coach leadership mindset
  • Scientific credibility and executive presence
  • Talent development and coaching
  • Strategic thinking and execution
  • Cross-functional collaboration
  • Compliance-focused judgment
  • Adaptability and growth orientation