Protein Scientist

Onsite Position - Foster City - M-F
Associate Scientist (Contract) Protein Sciences
Position Summary
We are seeking a highly motivated Associate Scientist (Contract) to support our Protein Sciences team. This individual will contribute as a hands-on laboratory scientist, executing protein production, purification, and analytical workflows that support multiple CAR-T and cell therapy programs.
This is a 100% bench-focused, individual contributor role. The successful candidate will work closely with scientists across Protein Science and Research to generate high-quality data and reagents, while contributing to efficient laboratory operations and experimental execution.
Key Responsibilities
Protein Production & Purification
Execute recombinant protein expression and purification workflows across multiple expression systems (e.G., mammalian cell culture, transient transfections)
Perform protein purification using AKTA chromatography systems (affinity, SEC, ion exchange)
Maintain cell cultures and support transfection workflows
Analytical Characterization
Perform biochemical and biophysical characterization of proteins and antibodies, including:
o SDS-PAGE and Western blot
o UPLC/HPLC-based purity assessment
o Binding assays (e.G., Octet/BLI)
Document and summarize experimental data clearly to support team decision-making
Protein Modification & Assay Support
Perform antibody and protein conjugation workflows with appropriate analytical follow-up
Prepare reagents and materials to support downstream functional assays (e.G., flow cytometry or cell-based assays in collaboration with Cell Biology partners)
Lab Operations & Execution
Maintain organized lab practices, including reagents, consumables, and shared equipment
Ensure accurate experimental documentation in electronic lab notebooks and LIMS
Follow established SOPs and contribute to maintaining reproducibility and data quality standards
Collaboration
Work closely with cross-functional partners to execute experiments aligned with defined protocols and timelines
Communicate experimental progress and results effectively to project teams
Basic Qualifications
Bachelor s or Master s degree in Biochemistry, Molecular Biology, Protein Science, or related field
2 4+ years of relevant hands-on laboratory experience in academic or industry settings
Preferred Qualifications
Experience with recombinant protein expression and purification workflows
Hands-on experience with AKTA systems and chromatography methods
Familiarity with protein characterization techniques (SDS-PAGE, HPLC, BLI/Octet, etc.)
Experience with mammalian cell culture and transfections
Strong attention to detail and commitment to high-quality data generation and documentation
Ability to follow protocols, troubleshoot at the experiment level, and work effectively in a fast-paced lab environment
Key Characteristics for Success in This Role
Strong hands-on bench execution skills
High level of organization and reproducibility
Ability to independently execute experiments with appropriate controls
Collaborative mindset and willingness to support team priorities