Medical Science Liaison (Eastern US)

Ossium Health•San Francisco, CA

5d•Onsite

About The Position

Ossium’s mission is to improve the health, vitality, and longevity of human beings through bioengineering. We develop, manufacture, and bank cell therapy products that apply the power of stem cell science to revolutionize treatment for patients with blood, immune, and orthopedic diseases. At Ossium, we empower our employees, maintain the highest standards of operational excellence, and are a force for good. We’re hiring a Medical Science Liaison (MSL) to support pre-launch medical affairs activities for our proprietary cryopreserved hematopoietic progenitor cell (HPC) bone marrow graft product that will be available through an on-demand donor bank. This role will play a critical part in shaping scientific understanding, building transplant-center readiness, and establishing Ossium’s medical presence ahead of commercial availability. This is a hands-on, field-based role, focused on deep scientific engagement with priority allogeneic BMT centers, investigator education, and support of evidence-generation efforts. You will serve as a scientific expert on Ossium’s HPC, Bone Marrow platform, supporting pre-launch medical strategy through high-quality scientific exchange, clinical insight gathering, and collaboration with internal teams. This role reports to the Chief Commercial Officer.

Requirements

Advanced degree (MD, DO, PhD, PharmD, or equivalent)
Minimum 3-5 years relevant experience as an MSL or in a scientific field facing role within biotech or pharma
Strong background in bone marrow transplantation, hematologic malignancies, cell therapy, or immunology
Ability to operate with a high level of organization and time management in a dynamic startup environment.
Willingness to travel up to ~80%
This role is a field based position based in the Eastern United States and requires regular travel to transplant centers across the region; candidates must reside within 50 miles of a major airport to facilitate this travel

Nice To Haves

Direct experience in allogeneic BMT, HPC grafts, or cell-therapy launches
Experience supporting pre-commercial or first-launch programs
Familiarity with transplant center workflows, registries, and guideline development
Existing relationships within the BMT community

Responsibilities

Act as the primary medical liaison for designated transplant centers within an assigned territory
Conduct non-promotional scientific exchanges regarding cryopreserved bone marrow
Educate investigators and transplant teams on Ossium’s banking, matching, and logistics model to support early awareness and readiness
Develop and maintain strong relationships with key transplant physicians, program directors, and cell-therapy stakeholders
Identify and cultivate future investigators, advisory board participants and speakers for Ossium programs
Collect structured medical insights to inform clinical strategy, launch planning, and evidence needs
Support ongoing and planned clinical studies as needed per clinical team, expanded access programs, and registry efforts related to HPC, Bone Marrow
Facilitate investigator-initiated research (IIR) discussions in alignment with medical strategy
Assist with site education related to protocol understanding and study conduct
Support major hematology and transplant congresses (e.g., ASH, TANDEM, local chapters) and engage with advocacy groups
Contribute to the development and review of medical materials and scientific content; support internal training
Partner closely with Clinical Development, Regulatory, Manufacturing, and Commercial teams to ensure medical alignment