Scientist II - Cell Process Development

Prime Medicine•Cambridge, MA

About The Position

Prime Medicine is a leading biotechnology company dedicated to creating and delivering the next generation of gene editing therapies to patients. The Company is leveraging its proprietary Prime Editing platform, a versatile, precise and efficient gene editing technology, to develop a new class of differentiated, one-time, potentially curative genetic therapies. Designed to make only the right edit at the right position within a gene while minimizing unwanted DNA modifications, Prime Editors have the potential to repair almost all types of genetic mutations and work in many different tissues, organs and cell types. Prime Medicine is currently progressing a diversified portfolio of investigational therapeutic programs organized around our core areas of focus: hematology, immunology & oncology, liver and lung. Across each core area, Prime Medicine is focused initially on a set of high value programs, each targeting a disease with well-understood biology and a clearly defined clinical development and regulatory path, and each expected to provide the foundation for expansion into additional opportunities. For more information, please visit www.primemedicine.com. We are seeking an experienced and motivated Scientist II to join the Cell therapy team within the Process Development department to execute on supporting BLA activities associated with PM359 ex vivo cell therapy program. This role is central to overseeing process validation and clinical manufacturing oversight at our CDMO partner and to provide technical documentation needed for regulatory submissions. This is an exciting opportunity to work at the intersection of cell biology, cell processing, bioengineering, and manufacturing to bring a breakthrough genetic medicine to patients in need and to gain experience with product licensure. This is a hands-on, technical role where the successful candidate will be involved in multiple technical and external manufacturing activities, so excellent organizational abilities, communications and collaboration are critical. The ideal candidate thrives when working in a fast-paced environment, working with purpose, and making an impact for patients.

Requirements

PhD in Bioengineering, Chemical Engineering, Immunology, or related life science field with 3+ years of industry experience; or M.S/BS with 8+/10+ years of directly applicable full-time work experience.
Deep hands-on experience in cell therapy manufacturing including cell isolation, gene editing, electroporation, cell culture, formulation, and cryopreservation
Experience with automated cell therapy unit operations required (e.g., Rotea, LOVO, CliniMACS); experience with cell therapy analytical methods preferred
Proven experience overseeing or working within cGMP manufacturing at a CDMO or internal GMP facility, including experience being the Person-In-Plant during campaigns, batch record creation and review.
Proficiency with DoE and statistical methods for process characterization; ability to link process parameters to product quality outcomes
Excellent written and verbal communication skills; ability to clearly present technical data to cross-functional audiences.
Highly self-motivated, detail-oriented, and able to operate independently with strong ownership mindset.
Comfortable in a fast-paced, matrixed biotech environment with evolving priorities.
Familiarity with common statistical analysis tools (e.g., JMP, Minitab), project management tools (e.g., Smartsheet), and productivity tools including generative AI (e.g., Claude, ChatGPT).
Ability to travel to manufacturing site up to 20% of the time as needed.

Nice To Haves

Experience with late-stage HSC or T cell therapy process development, including PPQ execution and/or BLA CMC authorship; rare-disease program experience is considered a plus
Prior experience as a Sponsor-side person-in-plant representative or as a cell therapy CDMO technical representative working with Sponsors.
Familiarity with regulatory submission writing and review.

Responsibilities

Apply knowledge in ex vivo cell therapy manufacturing unit operations (i.e., cell isolation, electroporation, culture, formulation, and cryopreservation) to prepare technical reports and documents for BLA.
Use knowledge of CPPs, PARs/NORs and QbD applied to process validation.
Collaborate with Analytical Development and Quality to document the process control strategy.
Serve as Subject Matter Expert (SME) to provide on-site support at the CDMO, oversee process execution, contribute to knowledge transfer and operator training, review batch records, investigate and close process deviations, and analyze manufacturing trends to recommend improvements.
Represent Cell Therapy MSAT on cross-functional team meetings; provide technical assessments and risk mitigation strategies.
Broaden experience and expertise by supporting other platform technologies associated with PM359 and then provide expertise to other pipeline programs.

Benefits

Prime Medicine offers a comprehensive Total Rewards package with robust health, financial, and wellness benefits—including medical, dental, vision, life insurance, a 401(k) match, and equity programs—along with generous paid time off, wellness days, and company-wide recharge breaks.
Our commitment to employee well-being reflects our belief that when we care for our people, we strengthen our ability to put patients first and make meaningful impact together.

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