Post Doctoral Scientist; CHO Cell Culture

Post Doctoral Scientist (Biologics Development and Manufacturing)

We are seeking a highly motivated and innovative Postdoctoral Researcher to join the Cell Culture Process Development team  role reports to the Cell Culture Process Development within the Biologics Pivotal & Commercial Organization.

Key Responsibilities:

• Design and perform buffer/media preparation and cell culture operations in shake flasks, ambr
  15, ambr
  250, bench‑scale bioreactors, and novel platforms.
• Lead optimization of chemically defined cell culture media to improve productivity and modulate product quality for fed‑batch and perfusion processes.
• Apply statistical and computational tools (DoE, multivariate analysis) to interpret experimental data and guide media formulation strategies.
• Elucidate mechanistic understanding of key factors and metabolic pathways related to cell culture medium and process development using advanced bio‑analytical techniques (bioassays, proteomics, metabolomics).
• Participate cross‑functionally within and outside biologics technical development to achieve common goals.
• Prepare technical reports, protocols, presentations, and manuscripts for internal and external dissemination.
• Occasional weekend work may be required to support cell culture operations.
• Maintain accurate laboratory records in compliance with institutional and regulatory standards.
• Adhere to department budget and all training, compliance and safety requirements, and support general laboratory upkeep.

Basic Qualifications:

• Ph.D. in Biology, Biochemistry, Bioengineering, Chemical Engineering, or Biomolecular Engineering with 0‑2 years of relevant experience or expected Ph.D. graduation within 6 months.
• Motivated self‑starter with organizational and problem‑solving skills; excellent verbal communication, presentation, and scientific writing skills.
• Technical proficiency, scientific creativity, collaboration, and independent experimental design capability.
• Passion for inclusion and understanding the business value of diverse teams.

Preferred Qualifications:

• Hands‑on laboratory experience in CHO cell culture including shake flasks, high‑throughput bioreactors (ambr
  15, ambr
  250), and bench‑scale bioreactors in parallel operation.
• Experience with serum‑free, chemically defined media optimization.
• Solid understanding of CHO cell metabolism, bioprocessing, and media formulation principles.
• Experience with metabolic pathway analysis tools and bio‑analytical techniques such as proteomics, metabolomics, and bioassays for gene expression analysis.
• Experience with kinetic modeling and computational tools (Python, R, MATLAB).
• Experience in statistics, design‑of‑experiments, and data analysis (JMP, Spotfire).
• Proven track record of external presentations and/or publications in peer‑reviewed journals.

Salary and Benefits: $ – $ base pay, eligible for paid time off and benefits including medical, dental, vision, and life insurance. No discretionary annual bonus or long‑term incentives.

Equal Employment Opportunity: Gilead Sciences Inc. is committed to equal employment opportunities. We welcome applicants of all backgrounds and uphold protections against discrimination. For more information, please visit our benefits page.