Molecular Biology ScientistSenior Associate Scientist

Legend Biotech is a global biotechnology company dedicated to treating and one day curing life-threatening diseases. Headquartered in Bridgewater New Jersey we are advancing the next generation of cell therapy through a portfolio of innovative technologies including autologous allogeneic and in vivo cell therapy approaches. Our research spans chimeric antigen receptor T-cell (CAR-T) T-cell receptor (TCR-T) natural killer (NK) cell-based therapies and other emerging platforms designed to transform the treatment of serious diseases. From our global network of research and development sites we are committed to discovering and developing safe effective and cutting-edge therapies for patients worldwide.

Legend Biotech entered into a global collaboration agreement with Johnson & Johnson to jointly develop and commercialize CARVYKTI (ciltacabtagene autoleucel; cilta-cel). Through this strategic partnership we combine complementary expertise and capabilities to advance innovative immunotherapies for patients living with multiple myeloma.

Legend Biotech is seeking a Molecular Biology Scientist/Senior Associate Scientist as part of the Research & Early Development team based in Philadelphia PA.

Role Overview

Legend Biotech is a global biotechnology company dedicated to treating and one day curing life-threateningdiseases. Headquartered in Somerset New Jersey we are developing advanced cell therapies across a diversearray of technology platforms including autologous and allogenic chimeric antigen receptor T-cell T-cell receptor(TCR-T) and natural killer (NK) cell-based immunotherapy. From our three R&D sites around the world we applythese innovative technologies to pursue the discovery of safe efficacious and cutting-edge therapeutics forpatients worldwide.

Legend Biotech entered into a global collaboration agreement with Janssen one of the pharmaceutical companies of Johnson & Johnson to jointly develop and commercialize ciltacabta gene autolecuel (cilta-cel). Our strategic partnership is designed to combine the strengths and expertise of both companies to advance the promise of immunotherapy in the treatment of multiple myeloma.

Legend Biotech seeks a motivated molecular biologist to join the Vector Biology team in Philadelphia supporting lentiviral vector (LVV) design construction and functional evaluation as well as engineered cell line development to enable CAR-T and other cell therapy programs. This role emphasizes reliable experimental execution timely delivery of materials and clear data communication.

Key Responsibilities

• Execute viral vector plasmid and helper plasmid design and construction to support gene overexpression knock-down and knock-out studies independently.
• Perform routine molecular cloning workflows and ensure plasmid quality meets established QC standards for vector production.
• Maintain accurate plasmid records including sequence files maps inventory/locations and support internal construct requests in partnership with other cross-functional teams.
• Generate and characterize engineered mammalian cell lines for transient or stable viral vector production single-cell cloning cell engineering and basic characterization.
• Perform mammalian cell culture and transient transfection under BSL-2 conditions.
• Support small-scale vector production using suspension cell lines for early development activities.
• Execute molecular/cellular assays to evaluate vector performance using qPCR/dPCR ELISA/Western Blot and flow cytometry.
• Analyze data summarize results present clear experiment conclusions escalate issues and propose next steps to project leads.
• Adhere to BSL-2 biosafety standards and Legend policies maintaining accurate and compliant electronic lab notebooks and documentation.
• Collaborate cross-functional support tech transfer activities as needed.
• Independently plans day-to-day execution within project goals recommends optimizations and next experiments.

Requirements

• Scientist: M.S. with 5 years or Ph.D. with 0-2 years in a related field; hands-on molecular cloning cell engineering and mammalian cell culture required.
• Hands-on experience in molecular biology techniques (cloning plasmid prep sequence analysis and construct verification).
• Experience with mammalian cell culture and transient transfection; familiarity with BSL-2 practices and documentation.
• Experience generating engineered cell lines (stable expression and/or CRISPR KO/KI) including cloning and basic screening (Scientist preferred).
• Exposure to viral vector production and/or viral vector workflows (LVV preferred).
• Experience with titering and functional readouts (e.g. transduction efficiency and gene expression).
• Experience with qPCR/dPCR flow cytometry Western blot and ELISA for tittering and functional assays.
• Strong ELN documentation sample tracking and ability to follow protocols/SOPs with attention to detail.
• Adaptable to a fast-paced environment; effective prioritization collaboration and communication.
• CRISPR/Cas gene editing for KO/KI or multiplexed cell lines.
• Familiarity with viral vector process development concepts (upstream and/or downstream).
• Exposure to NGS or Nanopore sequencing for vector or genome characterization.
• Tech transfer and/or CMC documentation experience (nice to have).
• Organized and detail-oriented; able to manage multiple experiments/projects.
• Analytical and problem-solving skills to troubleshoot and implement improvement.
• Collaborative; able to work effectively within a team environment.
• Maintain accurate ELN sample tracking and inventory records.
• Clear written and verbal communication for documentation and data presentation.

#Li-JR1

#Li-Onsite

Please note: These benefits are offered exclusively to permanent full-time employees. Contractors are not eligible for benefits through Legend Biotech.

Work Authorization & Employment Eligibility

Applicants must be authorized to work in the United States. As part of our commitment to maintaining a lawful workforce and ensuring compliance with federal employment regulations we participate in the E-Verify program. If you are selected for employment you will be required to complete the Form I-9 process and your employment eligibility will be verified through E-Verify in accordance with applicable federal law. We are committed to providing a fair transparent and welcoming hiring experience for all candidates.

EEO Statement

It is the policy of Legend Biotech to provide equal employment opportunities without regard to actual or perceived race color creed religion national origin ancestry citizenship status age sex or gender (including pregnancy childbirth related medical conditions and lactation) gender identity or gender expression (including transgender status) sexual orientation marital status military service and veteran status disability genetic information or any other protected characteristic under applicable federal state or local laws or ordinances.

Employment is at-will and may be terminated at any time with or without cause or notice by the employee or the company.