Senior Scientist I, Cell Line Development

San Francisco, CA /
Research /
Full time
/ On-site
Our mission is to enable pharmaceutical and biotechnology companies to bring more cell and gene therapies to patients, by dramatically increasing the efficiency of viral vector production and reducing the cost of manufacturing. 64x Bio was founded by world renowned scientists and experts in gene therapy from Harvard and the Wyss Institute. Our rapidly growing and cross disciplinary team consists of creative bioengineers and synthetic biologists working alongside data scientists to create cutting-edge solutions to problems in gene therapy. 


    • Analysis and characterization of newly engineered cell lines and stability studies
    • Manufacturing and characterization of research cell banks
    • Identifies and applies emerging practices for biotherapeutic cell line development and manufacturing to develop improved workflows
    • Writing and reviewing R&D protocols, SOPs, reports, and other product development and R&D documents
    • Train and mentor junior members of the team and collaborates across functional areas

About You

    • Ph.D. in molecular biology, bioengineering, cell biology, chemical engineering, or related field with 5-8 years of industry/academia wet lab experience, preferred
    • BA/MS in relevant field with 10 or more years of industry experience
    • Experience with suspension HEK/CHO cell line and cell culture development in a pharmaceutical or biotechnology setting
    • Hands-on experience in cell line development and characterization
    • Prior experience with cell bank development and characterization
    • Strong scientific and analytical skills including the ability to effectively use data in problem-solving and evaluating process changes/impacts
    • Highly detailed oriented, able to change course quickly as needed, never satisfied with the status quo, open to suggestions, and collaborative
    • Due to the inherent nature of cell culture, some weekend work and/or work on holidays may be needed