Job Details
Posted 1 October, 2026
Job Id: 631004
Scientist I
Job Description
Target PR Range: 42-52/hr
*Depending on experience
The Cell Line Development Group in South San Francisco, CA is seeking a Scientist I/II to join a talented and collaborative team developing CHO cell lines for GMP applications. In this laboratory position the candidate will perform hands-on CHO cell line development and characterization studies in a well-supported and dynamic environment to help advance novel biotherapeutics into human clinical studies. The work will encompass molecular, cellular, and bioprocess development studies relating to the generation and characterization of optimized CHO cell lines for production of our cancer pipeline candidates.
Key Responsibilities:
- CHO Cell Line Development & Execution: Lead the end-to-end execution of CHO cell line development workflows for both pipeline and innovation projects. This includes managing post-transfection selective pressures, high-throughput screening, and scaling cultures from 96-well plates to shake flasks.
- Monoclonal Cell Line Generation & Banking: Expertly perform single-cell cloning to generate and establish monoclonal CHO cell lines. Create, expand, and meticulously characterize master and working cell banks.
- Genetic & Molecular Characterization: Engineer and generate complex DNA vector constructs for expressing antibodies and novel protein formats. Perform deep genetic characterization of cell banks by extracting DNA/RNA for analysis via PCR, qPCR/ddPCR, and Next-Generation Sequencing (NGS).
- Advanced Instrumentation & Automation: Skillfully operate and maintain a suite of key laboratory instruments, including ViCell, Octet, flow cytometers, ambr15, HPLC, and automated imagers.
- Cross-Functional Collaboration & Communication: Present scientific updates at cross-functional meetings, collaborating closely with colleagues in purification, analytical, and formulation development to drive projects forward and meet aggressive timelines.
- Data Integrity & Documentation: Maintain meticulous, contemporaneous records of all experimental designs, data, and analysis in electronic lab notebooks (ELNs), ensuring compliance with standards for data integrity and good documentation practices.
Equal Opportunity Employer
We are proud to be an equal opportunity employer. We welcome and encourage applications from all qualified candidates regardless of race, sex, gender identity or expression, disability, age, religion or belief, sexual orientation, or any other characteristic protected by applicable laws and regulations. It is our policy not to discriminate against any applicant or employee, and we are committed to fostering a diverse, inclusive, and respectful work environment across all locations in which we operate. We believe that diversity, equity, and inclusion are fundamental to our mission and enhance our ability to serve clients globally. If you have a disability or require any reasonable accommodations during the application or interview process, please inform your recruiter or contact us directly so that we can explore the appropriate arrangements.
Fraud Alert
Candidate safety is a top priority at Planet Pharma. The industry has seen an increase in people falsely representing themselves as recruiters to gather personal information from job seekers. For your safety, do not provide sensitive data to anyone you have not spoken with thoroughly, never provide banking information during the application process and always double check the email address of the Recruiter to ensure it’s from an official Planet Pharma domain (@planet-pharma.com, @planet-pharma.co.uk, and @ppgadvisorypartners.com) and not a domain with an alternative extension like .net, .org or .jobs.
