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Post-Doctoral Scientist, Analytical Development and Operations

Gilead Sciences, Inc.
Foster City, CA
Start date
Sep 6, 2023

Job Details

Post-Doctoral Scientist, Analytical Development and Operations
United States - California - Foster City

Gilead Sciences, Inc. is a research-based bio-pharmaceutical company that discovers, develops and commercializes innovative medicines in areas of unmet medical need. With each new discovery and investigational drug candidate, we seek to improve the care of patients living with life-threatening diseases around the world. Gilead’s therapeutic areas of focus include HIV/AIDS, liver diseases, cancer and inflammation, and serious respiratory and cardiovascular conditions.

Making an impact on a global scale
Inclusion is one of the company’s five core values. That’s because we know that we are stronger and more innovative at Gilead when we are informed by a diverse set of backgrounds, experiences and points of view. Gilead Sciences is a biopharmaceutical company that discovers, develops and commercializes innovative therapeutics in areas of unmet medical need. The company's mission is to advance the care of patients suffering from life-threatening diseases worldwide.

When you join Gilead, you join our mission to change the world by enabling people to live healthier and more fulfilling lives. Come join a mission-driven bio-pharmaceutical organization that values inclusion and diversity, has a strong portfolio of products, and is constantly #CreatingPossible

For Current Gilead Employees and Contractors:

Please log onto your Internal Career Site to apply for this job.

At Gilead we believe every employee deserves a great leader. As a people leader now or in the future, we expect that you will model and create an environment of inclusion, be intentionally focused on the hiring, development, growth and retention of talent, and empower teams to align and achieve goals.
Job Description

Post-Doctoral Scientist - Analytical Development and Operations


Analytical Development and Operations is looking for a highly motivated Post‑Doctoral Scientist to pursue cutting-edge research and development work using state-of-the-art 2D-LC/MS technology. The successful candidate will focus on establishing comprehensive strategies for streamlining stereochemical purity assessments, mass balance investigations, and analysis of impurities in highly complex mixtures.


The successful candidate will initiate an independent research project to lead development of orthogonal separation conditions using two-dimensional liquid chromatography-mass spectrometry (2D-LC/MS) for peak purity analysis, mass balance investigations, and low-level impurity identification. In this role, you will also perform qualitative and quantitative data analysis of comprehensive 2D-LC data using GC Image LCxLC software. The expectation is that this work will result in novel contributions to support the development of procedures for stereoisomeric characterization and quantitation, as well as methods for low-level impurity identification. The selected candidate will be required to present studies internally and publish findings in leading scientific journals and conferences. The Post‑Doctoral Scientist will work in a highly collaborative environment at Gilead through a 2-year term, with an option to extend an additional third year. This position also provides access to world class research facilities and the opportunity to leverage expertise and resources across multiple functional areas at Gilead.

Minimum Qualifications:
  • Candidate should possess a Doctoral degree and have a strong background in analytical chemistry, pharmaceutical development, chemical engineering, or a highly related science discipline.
  • Qualified candidates must have at least one first author paper published or accepted in a peer-reviewed journal.
  • Candidates must have strong in-depth knowledge of chromatographic separations and mass spectrometry techniques.

Preferred Qualifications:
  • Experience with chiral and achiral separation using UPLC/HPLC instrumentation with UV and/or MS detection.
  • Working knowledge of various commercial mass spectrometry techniques (using Q, QqQ, TOF, Orbitrap), data processing software (e.g., Xcalibur, ChemStation, MassHunter, MassLynx), and statistics.
  • A successful track record of peer-reviewed journal publications and presentations.
  • Previous success working effectively in a multidisciplinary, highly matrixed environment.
  • Excellent decision-making, written and verbal communication skills.
  • Ability to think critically, plan and execute experiments independently, and contribute in a fast-paced, highly dynamic environment.

Keywords: Post Doc Fellow, Post Doc Fellowship, Post-Doctoral Fellow, Post-Doctoral Fellowship, Post Doctorate, Postdoc, Post-Doctoral Scientist

The salary range for this position is: $120,445.00 - $155,870.00. Gilead considers a variety of factors when determining base compensation, including experience, qualifications, and geographic location. These considerations mean actual compensation will vary. This position may also be eligible for a discretionary annual bonus, discretionary stock-based long-term incentives (eligibility may vary based on role), paid time off, and a benefits package. Benefits include company-sponsored medical, dental, vision, and life insurance plans*.

For additional benefits information, visit:

* Eligible employees may participate in benefit plans, subject to the terms and conditions of the applicable plans.

For jobs in the United States:

As an equal opportunity employer, Gilead Sciences Inc. is committed to a diverse workforce. Employment decisions regarding recruitment and selection will be made without discrimination based on race, color, religion, national origin, gender, age, sexual orientation, physical or mental disability, genetic information or characteristic, gender identity and expression, veteran status, or other non-job related characteristics or other prohibited grounds specified in applicable federal, state and local laws. In order to ensure reasonable accommodation for individuals protected by Section 503 of the Rehabilitation Act of 1973, the Vietnam Era Veterans' Readjustment Act of 1974, and Title I of the Americans with Disabilities Act of 1990, applicants who require accommodation in the job application process may contact for assistance.

For more information about equal employment opportunity protections, please view the 'Know Your Rights' poster.



Our environment respects individual differences and recognizes each employee as an integral member of our company. Our workforce reflects these values and celebrates the individuals who make up our growing team.

Gilead provides a work environment free of harassment and prohibited conduct. We promote and support individual differences and diversity of thoughts and opinion.

For Current Gilead Employees and Contractors:

Please log onto your Internal Career Site to apply for this job.



Gilead Sciences is a biopharmaceutical company that discovers, develops, and commercializes innovative therapeutics in areas of unmet medical need. The company's mission is to advance the care of patients suffering from life-threatening diseases worldwide. Headquartered in Foster City, California, Gilead has operations in North America, Europe and Australia.

Company info
333 Lakeside Drive
Foster City
United States

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