Medical Science Liaison (Eastern US)

About the Job

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.

Required Qualifications

• 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

Preferred Qualifications

• 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

Key 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

In your first six months, some projects you’ll work on include:

• Becoming a subject-matter expert in Ossium’s HPC, Bone Marrow (cryopreserved) platform


• Establishing scientific relationships with priority transplant centers and KOLs


• Supporting pre-launch congress activity and medical engagement planning


• Contributing medical insights to refine positioning, evidence gaps, and launch readiness

We Offer a Full Slate of Employee Benefits Including:

• Competitive salaries


• Stock options


• 401(k) matching


• Medical, dental, and vision coverage


• Four weeks of PTO accrued annually (vacation & sick time) + 11 company holidays


• Employer paid life insurance and long-term disability


• Gym membership and recreational sports reimbursements