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Research Associate, Process Development

Gilead Sciences, Inc.
Oceanside, CA
Start date
Jul 30, 2022

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Job Details

Research Associate, Process Development
United States - California - Oceanside

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

Gilead Sciences is continuing to hire for all open roles. Our interview process may be conducted virtually and some roles will be asked to temporarily work from home. Over the coming weeks and months, we will be implementing a phased approach to bringing employees back to site to ensure the health and safety of our teams.

For Current Gilead Employees and Contractors:
Please log onto your Internal Career Site to apply for this job.

Job Description

Research Associate - Protein Purification Process Development

Gilead Sciences, Inc. is a research-based biopharmaceutical company founded in 1987. Together we deliver life-saving therapies to patients in need. With the commitment and drive you bring to the workplace every day, you will be part of a team that is changing the world and helping millions of people live healthier, more fulfilling lives. Our worldwide staff is a close community where you can see the tangible results of your contributions, where every individual matters, and everyone has a chance to enhance their skills through ongoing development. Our scientific focus has resulted in marketed products that are benefiting hundreds of thousands of people, a pipeline of late-stage drug candidates, and unmatched patient access programs to ensure medications are available to those who could otherwise not afford them. By joining Gilead, you will further our mission to address unmet medical needs and improve life by advancing the care of patients with life-threatening diseases.

Gilead has an opportunity for an experienced candidate in our Biologics Drug Substance Process Development group at our Oceanside facility in Southern California. We are seeking motivated, team oriented individuals with scientific expertise in process development as well as pre-clinical and clinical operations related to recombinant proteins. Reporting to a Research Scientist in Purification Process Development, you will have the opportunity to work and direct teams for the early and late stage clinical development of our protein molecules.

Specific Responsibilities and Job Functions:
  • Plan and execute experiments supporting development, characterization and troubleshooting of drug substance manufacturing unit operations such as centrifugation, normal flow filtration, chromatography operations, tangential flow filtration, and virus inactivation/removal with limited supervision.
  • Support Research material generation requests during molecular assessment with high throughput purification
  • Collaborate with Development Biologics Technical Operations in technology transfer from process development to clinical and commercial GMP manufacturing, including definition of bill of materials, batch record drafting/review, and discrepancy resolution. Serves as process development representative during purification operations, provides technical troubleshooting and identifies opportunities for future process and equipment improvements.
  • Author and review GMP and non-GMP technical documentation (batch records, SOPs, validation protocols & reports; process characterization protocols and reports)
  • Participates in internal and cross-functional meetings and presents results of work, interprets data, and draws conclusions regarding presented material and nature of work
  • Demonstrates good verbal communication and interpersonal skills to provide insight into the processes used to achieve results of assigned tasks
  • Demonstrates ability to recognize anomalous and inconsistent results and interpret experimental outcomes and proactively seek out senior personnel to discuss potential solutions to problems
  • Comply with safety and environmental rules and regulations applicable to the operations.

Knowledge, Experience and Skills:
  • Have working understanding of downstream process development and scale up including centrifugation, normal flow filtration, chromatography operations, tangential flow filtration, and virus inactivation/removal. The ability to demonstrate a significant level of hands on experience in several of these areas is a plus.
  • A broad understanding of purification process development for monoclonal antibodies, recombinant protein proteins and/or other biologics modalities is a plus
  • Prior experience in analytical SEC/HPLC and HCP ELISA is beneficial, but not required.
  • Familiarity with Pilot Plant and GMP manufacturing operation concepts including sale-up, technology transfer, documentation review and technical troubleshooting is preferred.
  • Effective verbal/written communication skills and interpersonal skills.
  • Demonstrated ability to work in a collaborative environment with a problem-solving spirit.
  • Ability to proactively identify issues and develop solutions in a collaborative multidisciplinary environment.
  • Be self-motivated and organized, familiar with relevant literature, and enjoy scientific investigation.
  • 0+ years of experience with BS degree in a relevant scientific discipline.

To apply, please submit resume through our website at

Gilead is an equal opportunity employer.

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.

Following extensive monitoring, research, consideration of business implications and advice from internal and external experts, Gilead has made the decision to require all U.S., Canada, Australia, Singapore, and Hong Kong employees and contractors to receive the COVID-19 vaccines as a condition of employment. “Full vaccination” is defined as two weeks after both doses of a two-dose vaccine or two weeks since a single-dose vaccine has been administered. Anyone unable to be vaccinated, either because of a sincerely held religious belief or a medical condition or disability that prevents them from being vaccinated, can request a reasonable accommodation.​

For more information about equal employment opportunity protections, please view the 'EEO is the Law' 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.

Find Us
333 Lakeside Drive
Foster City
United States
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