Senior Medical Science Liaison _ South

About Celldex

Celldex is pioneering new horizons in immunology to deliver life‑changing therapies. We are relentless in our pursuit of novel antibody‑based treatments that engage the human immune system and directly impact critical pathways in allergic, inflammatory, and autoimmune diseases.

We are building a world‑class Medical Affairs organization to support late‑stage development and launch for the company’s immunology asset. Our culture is entrepreneurial, fast‑moving, and deeply mission‑driven—where passionate individuals can make a meaningful impact.

Why Join Celldex?

• Opportunity to build and shape the Field Medical organization at a pivotal stage
• Direct impact on launch readiness and execution for a late‑stage immunology asset
• Highly visible leadership role with enterprise influence
• Entrepreneurial culture where leaders can build, innovate, and drive change
• Mission‑driven organization focused on improving the lives of patients with serious diseases

The Medical Science Liaison (MSL) / Senior Medical Science Liaison (Sr. MSL) will prioritize contacts with key opinion leaders (KOLs), healthcare providers, and clinical investigators within an assigned U.S. region, providing scientific exchange and supporting the generation of actionable insights.

This role serves as a field‑based extension of the Medical Affairs and Evidence Generation (MA&EG) organization, supporting external engagement and contributing to the understanding of clinical practice, treatment dynamics, and emerging data within immunology and/or dermatology.

The MSL / Sr. MSL is expected to deliver scientifically accurate, relevant, and increasingly insightful discussions, gather and communicate insights from the field, and support execution of regional priorities. With increasing experience, the role operates with greater independence, sound judgment, and scientific depth, contributing more meaningfully to insight interpretation, stakeholder engagement, and cross‑functional alignment.

Enhancing knowledge / scientific exchange:

• Engages in Medical‑to‑Medical scientific discussions including disease awareness, clinical data, and treatment considerations. Communicates scientific information clearly and effectively to healthcare providers, investigators, and KOLs.
• Develops and demonstrates increasing depth of knowledge and confidence in scientific exchange, including the ability to navigate more complex or nuanced discussions related to clinical data and treatment paradigms. Builds credibility and trust as a scientific resource within the region and adapts communication appropriately across stakeholder types.

Insight gathering and sharing:

• Responsible for gathering, synthesizing, and communicating insights from field engagement. Identifies trends in clinical practice, perceptions of data, and factors that influence treatment decisions.
• With increasing experience, provides more structured, contextualized, and actionable insights, demonstrating the ability to connect individual observations into meaningful themes. Begins to proactively share insights with internal stakeholders and align with MA&EG partners, including HEOR and PRO functions, to support organizational understanding.

Regional ownership / execution:

• Executes field activities within assigned territory, including planning, prioritization, and engagement. Demonstrates strong organization and time management skills in managing multiple priorities.
• With increasing experience, operates with greater independence and ownership of the territory, effectively prioritizing high‑value engagements and making informed decisions on how to allocate time and resources to maximize impact.

Data interpretation:

• Applies scientific knowledge to understand and communicate clinical data. Develops the ability to interpret study results and discuss findings appropriately with external stakeholders.
• With experience, developing confidence in independently interpreting clinical data, including the ability to translate findings into relevant clinical context for different audiences.

Data generation / R&D support:

• Supports clinical development activities, including engagement with investigators and…