Job Details

Job Title: Sr Associate Scientist
Location: Foster City, CA, 94404
Work Type: Onsite (Lab-based, 5 days/week)
Duration: 12 Months

Position Summary:
We are seeking a highly motivated Sr Associate Scientist to support purification process development activities for biologics during pivotal and commercial development phases. This role is laboratory-focused and supports bench-scale downstream purification development and process characterization studies.
The ideal candidate has strong hands-on laboratory skills, experience with purification process execution, and the ability to troubleshoot and refine experimental methods in a fast-paced development environment.Key Responsibilities:
Purification Process Development

• Execute purification process development and characterization experiments in support of pivotal and commercial programs
• Perform bench-scale purification studies including chromatography, filtration, and UF/DF as appropriate
• Support resin and membrane lifetime studies, robustness assessments, and process characterization activities
• Collect, analyze, and interpret experimental data in compliance with data integrity expectations
• Author experimental protocols, reports, and maintain high-quality electronic laboratory notebook documentation

Technical Excellence & Collaboration

• Support implementation of new purification technologies, instrumentation, and platform enhancements
• Troubleshoot equipment, materials, and experimental methods to improve robustness and reproducibility
• Maintain a state-of-the-art purification lab, including instrumentation readiness and workflow improvements
• Partner with upstream, downstream, and cross-functional colleagues on development and characterization initiatives
• Adhere to all training, safety, quality, and compliance requirements

Qualifications / Skills / Experience:

• M.S. with 4+ years or B.S. with 6+ years of relevant industry experience in chemical engineering, biochemistry, bioengineering, or related discipline
• Hands-on experience with downstream purification techniques including chromatography and filtration
• Experience with tangential flow filtration, AKTA systems, and UNICORN software is preferred
• Strong experimental execution, data analysis, and documentation skills
• Ability to work both independently and in collaborative, fast-paced environments
• Excellent interpersonal, verbal, and written communication skills