Sr. Principal Scientist - Cell Line Development

EPM Scientific; Boston (MA); On-site; USD 140,000 - 187,000; Full time

Job summary

EPM Scientific is seeking a Sr. Principal Scientist - Cell Line Development in Massachusetts to lead mammalian cell line and microbial strain programs for therapeutic proteins.

You will guide a team, oversee vector construction, transfection, and cell banking, and drive development toward IND and BLA milestones. The role requires extensive expertise in CHO/HEK systems, GMP/ICH-like environments, and leadership of cross-functional teams to deliver high-quality development documentation and

Qualifications

• Ph.D./M.S./B.S. in Molecular Biology, Cell Biology, Biochemistry, Biotechnology, or related field.
• Hands-on mammalian cell line development experience for therapeutics.
• Experience leading scientific teams and IND/BLA submissions.
• Familiar with CHO, HEK, NS0 expression systems and regulatory expectations.
• Proficiency with statistical DOE and data analysis tools.

Responsibilities

• Lead development and optimization of mammalian cell lines and microbial strains.
• Manage vector construction, screening, transfection, and cell line development activities.
• Oversee recombinant protein characterization (ELISA, PCR, SDS-PAGE, Western blot).
• Provide scientific and operational leadership to a team of scientists and associates.
• Support IND/BLA documentation and broader CMC submissions.
• Drive strategic initiatives, evaluate new platforms, and manage budgets.

Skills

Cell line development

Mammalian expression systems

Leadership

IND/BLA documentation

Design of experiments

Cross-functional collaboration

GMP/ICH knowledge

Education

Ph.D. in a related field

M.S. in a related field

B.S. in a related field

Tools

JMP

Minitab

Design-Expert

Job description

Sr. Principal Scientist - Cell Line Development (PR/595784) Massachusetts, USA

Salary: USD140000 - USD187000 per year

Sr. Principal Scientist, Cell Line Development

Summary

Our firm is currently partnered with a growing biopharmaceutical development organization seeking an Associate Director of Cell Line Development to lead its mammalian cell line and microbial strain development capabilities.

This individual will lead a team of scientists and associates responsible for developing high-performing expression systems for monoclonal antibodies, recombinant proteins, and other therapeutic products. As a key member of the Biopharmaceutical Development leadership team, the Associate Director will help shape the strategic growth of the cell line development function while providing technical leadership across client programs.

Key Responsibilities

• Lead the development and optimization of mammalian cell lines and microbial strains for therapeutic protein production.
• Oversee activities spanning vector construction, screening, transfection, media optimization, stable cell line development, and cell banking.
• Manage recombinant protein characterization activities, including ELISA, PCR, SDS-PAGE, and Western blot.
• Provide scientific and operational leadership to a team of scientists and research associates.
• Support the preparation of cell line and strain development documentation for IND, BLA, and broader CMC submissions.
• Drive innovation projects, evaluate emerging technologies, and oversee the implementation of new platforms and capabilities.
• Represent the cell line development function in client meetings and provide technical support to business development and commercial teams.
• Contribute to departmental strategy, capability expansion, resource planning, and budget management.
• Author and review SOPs, protocols, technical reports, and development documentation.
• Ensure programs meet applicable regulatory expectations, technical standards, and project timelines.
• Mentor and develop team members while fostering a collaborative, results-oriented environment.

Qualifications

• S., M.S., or Ph.D. in Molecular Biology, Cell Biology, Biochemistry, Biotechnology, or a related scientific discipline.
• D. with at least 5-7 years, M.S. with 8-11 years, or B.S. with at least 12-16 years of relevant industry experience.
• Demonstrated expertise in mammalian cell line development and expression technologies supporting monoclonal antibody and recombinant protein therapeutics.
• Hands-on experience with mammalian expression systems such as CHO, HEK, and NS0.
• Experience with the CHO-GS platform is highly desirable.
• Experience developing cell lines for bispecific antibodies or other complex biologics is strongly preferred.
• Familiarity with microbial strain development and optimization.
• Strong understanding of PAT technologies, GMP expectations, ICH guidelines, and CMC development.
• Experience supporting IND/BLA documentation and regulatory submissions.
• Proficiency in statistical design of experiments and data analysis using JMP, Minitab, Design-Expert, or comparable software.
• Demonstrated ability to lead technical programs, solve complex development challenges, and make strategic recommendations to senior leadership.
• Strong team leadership, project management, organizational, and cross-functional communication skills.