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Associate Scientist Downstream Bioprocess


Job Location:

California, CA - USA

Salary: Not provided by the employer
Posted: 1 October 2026 (8 hours ago)
Application Deadline: 29 December 2026
Vacancies: 1 Vacancy

Job Summary

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


Job Duration: Long Term Contract (Possibility of Extension)

Pay Rate : $54.50/hr on W2


Company Benefits: Medical Paid Sick leave 401K


The ideal candidate will have practical experience executing downstream purification processes in a pilot manufacturing or process development environment and be comfortable operating chromatography and filtration equipment while working within controlled documentation and schedule-driven workflows.

Key Responsibilities
  • Plan and execute pilot-scale downstream purification runs including clarification chromatography TFF viral filtration depth filtration and centrifugation.
  • Prepare buffers and reagents and perform equipment setup operation cleaning and teardown.
  • Operate ÄKTA chromatography systems and UNICORN software for process execution and data collection.
  • Pack and unpack chromatography columns and support chromatography process activities.
  • Operate single-use equipment and filtration systems in a pilot-scale environment.
  • Monitor process performance analyze run data identify process issues and troubleshoot deviations in real time.
  • Accurately document activities in SOPs batch records run sheets and technical summaries.
  • Communicate observations process results and troubleshooting findings to cross-functional teams.
  • Support process scale-up comparability studies technology transfer and laboratory readiness activities.
  • Follow applicable safety quality and controlled-documentation procedures.
  • Support occasional weekend or extended-hour coverage based on process schedules.
Required Qualifications
  • AA/AS degree with 4 years of relevant industry experience in downstream purification or bioprocessing; OR
  • BS/BE degree in Chemical Engineering Biochemical Engineering Biochemistry Biology or a related field with 2 years of relevant industry experience.
  • Hands-on pilot-scale downstream bioprocessing experience is required.
  • Practical experience with downstream purification operations such as:
    • Chromatography
    • TFF
    • Viral filtration
    • Depth filtration
    • Centrifugation
    • Clarification
    • Buffer preparation
  • Hands-on experience operating ÄKTA systems and UNICORN.
  • Experience with chromatography column operation including packing/unpacking is highly relevant.
Preferred Qualifications
  • End-to-end downstream purification experience rather than experience limited to a single unit operation.
  • Biologics pilot plant or manufacturing experience.
  • Experience supporting process development scale-up technology transfer or comparability activities.
  • Experience with single-use technologies and equipment.
  • GMP/cGMP or GMP-adjacent experience.
  • Experience with controlled documentation batch records SOPs and deviation reporting



If interested please send us your updated resume at

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Required Skills:

Downstream Purification