Job Description

General Summary:

Vertex is seeking a highly motivated Scientist to join the Analytical Development team. This role will lead the development of analytical cell lines that serve as critical reagents for potency assay development, functional characterization, and analytical control strategy. The Scientist will play a critical role in the development, optimization, and validation of bioassays to support characterization of biologics and other complex biologic modalities. Operating at the interface between Research and Analytical Development, the Scientist will translate product mechanism of action into scientifically sound, phase-appropriate cell line and assay strategies. This role requires a strong background in bioassay development, biologics, and cell line development, as well as a passion for innovation and collaboration in a fast-paced, dynamic environment. The position will be based in Boston, MA.

Key Duties and Responsibilities:

Cell Line Development:

• Lead the design, characterization and lifecycle management of stable mammalian analytical cell lines expressing targets of interest, receptor systems, or reporter constructs to support potency and functional bioassays.

• Manage CROs for the development of cell lines for use in bioassays. Act as the primary point of contact to provide technical guidance and ensure alignment with project goals and timelines. Troubleshoot and resolve technical challenges related to cell line development and maintenance.

• Translate product mechanism of action into cell line designs and cell-based assay concepts aligned with potency and analytical control strategy.

Bioassay Development, Validation and Transfer:

• Develop and support cell-based bioassays, including reporter gene assays, signaling pathway assays, proliferation or cytotoxicity assays, and other mechanism-based functional readouts.

• Contribute to early-stage potency assay development and ensure effective technical continuity with late-stage potency, validation, transfer, and QC implementation strategies.

• Evaluate assay and cell line performance attributes, including sensitivity, specificity, robustness, stability, reproducibility, and fitness for intended use.

• Lead or contribute to technical transfers to internal laboratories, external partners, vendors, or quality control functions, providing the technical rationale and knowledge needed for transfer.

Data Analysis and Interpretation:

• Independently design and execute complex experimental plans, interpret data, identify technical risks, and recommend scientifically justified solutions.

• Author and review technical reports, protocols, method documents, cell line characterization packages, technology transfer documents, and CMC source documentation supporting regulatory submissions.

• Ensure that analytical cell line generation, assay development, documentation, and data packages are aligned with applicable quality and compliance expectations, good documentation practices, and data integrity principles.

Collaboration and Cross-Functional Support:

• Represent Analytical Development on cross-functional program teams and provide technical input on potency strategy, functional characterization, cell line suitability, and control strategy.

• Mentor associates through technical guidance, experimental design review, data interpretation, and development of scientific judgment.

Innovation and Continuous Improvement:

• Identify opportunities to improve workflows, increase assay robustness and reduce development timelines.

Knowledge and Skills:

Technical Skills:

• Proven proficiency in plate-based assays including ELISA, reporter gene assays, cytotoxicity/ADCC/CDC assays and other bioassay readout.

• Experience with technologies such as flow cytometry, qPCR or ddPCR is preferred.

• Familiarity with statistical tools and data analysis software (e.g., JMP, GraphPad Prism, SoftMax Pro and other bioassay data analysis software).

• Knowledge of USP, FDA and ICH guidelines governing bioassay development and validation.

Soft Skills:

• Ability to multi-task as necessary, manage competing priorities and advance multiple projects within required timelines.

• Strong problem-solving and critical-thinking abilities. Attention to details.

• Excellent written and verbal communication skills with the ability to present complex data to diverse audiences.

• Demonstrated ability to work collaboratively.

• Effective delivery of objectives within the preset timeline.

• Openness to using digital, automation, and AI-enabled tools to improve data analysis, documentation, knowledge management, and scientific workflows.

Education and Experience:

• Ph.D. in Cell Biology, Molecular Biology, Biochemistry, Immunology, or a biology-related discipline with 0 – 3 years of relevant industry experience in biologics analytical development, bioassay development, cell line engineering, or functional characterization.

• Master’s degree in biology-related scientific discipline and 3 years of work experience in biopharmaceutical industry or

• Bachelor’s degree in biology-related scientific discipline and 6 years of work experience in biopharmaceutical industry.

• Experience developing analytical cell lines and cell-based potency or functional assays to support biologics development. Strong understanding of receptor biology, cellular signaling, reporter systems, mechanism of action, and their application to potency assay design.

At Vertex, we embrace continuous learning and encourage employees to stay informed on advances in AI, technology, automation, and industry trends. We seek talent who bring an external perspective, demonstrate curiosity and sound judgment, and thoughtfully adopt new capabilities that improve decision-making, drive innovation, increase efficiency, and help deliver better outcomes for patients.

Pay Range:

Disclosure Statement:

Flex Designation:

Flex Eligibility Status:

In this On-Site designated role, you will work five days per week on-site with ad hoc flexibility.  

Note: The Flex status for this position is subject to Vertex’s Policy on Flex @ Vertex Program and may be changed at any time.

#LI-Onsite

Company Information

Vertex is a global biotechnology company that invests in scientific innovation.

Vertex is committed to equal employment opportunity and non-discrimination for all employees and qualified applicants without regard to a person's race, color, sex, gender identity or expression, age, religion, national origin, ancestry, ethnicity, disability, veteran status, genetic information, sexual orientation, marital status, or any characteristic protected under applicable law. Vertex is an E-Verify Employer in the United States. Vertex will make reasonable accommodations for qualified individuals with known disabilities, in accordance with applicable law.

Any applicant requiring an accommodation in connection with the hiring process and/or to perform the essential functions of the position for which the applicant has applied should make a request to the recruiter or hiring manager, or contact Talent Acquisition at [email protected]