Career opportunity

Senior Associate Scientist (Contract), Polysaccharide Analytical Development

Vaxcyte · San Carlos, CA

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GlycosciencePublic posting
VaxcyteSan Carlos, CAPosted June 04, 2026

Position description

Summary:

We are seeking a highly motivated and detail-oriented Senior Associate Scientist (Contract) to join our Polysaccharide team. Primary responsibility for the incumbent will be to support analytical testing and characterization of polysaccharide-based drug candidates. This individual will execute and optimize a variety of biochemical and chromatographic assays, contribute to method development initiatives, and ensure high-quality data generation in support of research and development programs.  

This role requires strong hands-on experience in HPLC-based techniques, biochemical assays, and analytical software platforms, along with a commitment to data integrity, documentation excellence, and cross-functional collaboration.

Essential Functions: 

Analytical Testing & Characterization

  • Perform in-house assays for polysaccharide manufacturing, including in-process testing, process development and process characterization study sample analysis, including:
    • HPLC-based assays (e.g., HPLC-RI, HPAEC-PAD, etc.)
    • Spectrophotometric-based assays (e.g., UV/Vis, Lowry, PicoGreen, Anthrone, etc.)
    • Enzyme- and/or Immuno assays (e.g., ELISA, MSD platforms)
    • Nephelometry (e.g. Turbidity analysis)
    • Metabolite Analysis (e.g. sugars)
    • LC-MS-based assay
  • Prepare samples, reagents, standards, and controls according to established protocols.
  • Troubleshoot instrumentation and assay performance issues to ensure reliable data output.

Method Development & Optimization

  • Assist in developing, qualifying, and optimizing analytical methods for sample preparation, testing, and characterization.
  • Support method transfer, robustness evaluation, and documentation updates.
  • Proactively recommend improvements to increase assay sensitivity, reproducibility, and throughput.

Data Analysis & Reporting

  • Utilize data analysis software platforms such as Empower and Chromeleon for HPLC data acquisition and analysis, and SoftMax Pro for MSD and spectrophotometric assay data analysis.
  • Analyze, interpret, and summarize experimental data clearly and concisely.
  • Prepare technical summaries and present findings to cross-functional teams (e.g., R&D, CMC, Quality).

Compliance & Documentation

  • Maintain meticulous laboratory notebooks and electronic records in compliance with internal SOPs and laboratory standards.
  • Ensure data integrity and adherence to applicable regulatory guidelines (e.g., GLP/GMP where applicable).
  • Participate in audits, documentation reviews, and quality initiatives as needed.

Collaboration & Continuous Learning

  • Collaborate effectively with scientists across disciplines to support program milestones.
  • Demonstrate eagerness to learn new analytical techniques and scientific concepts.
  • Integrate best laboratory practices and contribute to a culture of operational excellence.

Requirements:

  • MSc in Chemistry/Biochemistry, Biotechnology, or similar degree with a minimum of 3 years of relevant industry experience, or BSc with a minimum of 5 years of relevant industry experience.
  • Hands-on experience with HPLC systems and carbohydrate or polysaccharide analysis.
  • Experience with HPAEC-PAD is preferred.
  • Experience with LC-MS/MS is a plus.
  • Experience with Empower and/or Chromeleon software.
  • Familiarity with biochemical assays (ELISA, colorimetric, fluorescence-based assays).
  • Experience working with polysaccharides, biologics, or complex drug substances.
  • Experience in in-process monitoring and testing for process-related impurities.
  • Knowledge of regulatory expectations for analytical documentation.
  • Experience supporting CMC, process development, or analytical development programs.
  • Strong organizational skills and attention to detail.
  • Excellent written and verbal communication skills.
  • Strong analytical and problem-solving skills.
  • High attention to data accuracy and reproducibility.
  • Ability to manage multiple priorities in a fast-paced environment.
  • Collaborative team player with proactive communication style.
  • Continuous improvement mindset.

Reports to: Senior Scientist, Polysaccharide Analytical Development

Location: San Carlos, CA

Expected Contract Length:
12months

Hourly Range: $56.00/hr. - $62.00/hr.