Associate Scientist - Upstream Bioprocess

San Mateo, United States | Posted on 10/01/2026

Our client, a world leader in life sciences and biotechnology, is looking for an“Associate Scientist
- Upstream Bioprocess” based in Foster City, CA.

Job Duration:

Long Term Contract(Possibility of Extension)

Pay Rate : $54.50/hr onW2

Company Benefits: Medical, Paid Sickleave, 401K

Hands-on upstreambioprocess professional supporting pilot-scale biologics development. Execute cell culture processes, troubleshoot real-time process issues, support technology transfers, and maintain accurate documentation in a fast-paced pilotlab environment.

• Execute upstream cell culture processes using shake flasks, WAVE systems, and
  100L/500L single-use bioreactors
  .
• Prepare media, buffers, and reagents; set up equipment and support post-runteardown/cleaning.
• Perform bioreactor sampling, feeding, and end-to-end run support.
• Troubleshoot pilot runs and support equipment, inventory, analytical activities, andlab readiness.
• Maintain accurate SOPs, Benchling batch records, run summaries, deviations, andchange notes
  .
• Support technology transfers, monitor process performance, and summarize data/results.
• Contribute to continuous improvement and biologics development programs.

• Hands-on upstream cell culture/bioprocessing experience at bench, pilot, or manufacturing scale.
• Experience with bioreactors, media/buffer preparation, and process execution.
• Strong technical documentation and data communication skills.
• Organized,collaborative, safety-focused, and comfortable in a schedule-driven environment.

• Pilot-scalebioprocess experience, especially WAVE systems or single-use bioreactors
  .
• Technology transfer, manufacturing support, or GMP/GMP-adjacent experience.
• Experience across multiple upstream unit operations.

• AA/AS+ 4+ years relevant industry experience, OR
• BS/BEin Chemical Engineering, Biochemical Engineering, Biochemistry, Biology,or related field + 2+ years relevant experience.