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Job description
Use Your Power for Purpose
At Pfizer, our purpose is to deliver breakthroughs that change patients’ lives. As a Senior Associate Scientist, you will be at the forefront of this mission, working within our Research & Development division. Your role will be pivotal in translating advanced science and technologies into therapies and vaccines that matter most. By leveraging cutting-edge design and process development capabilities, you will help accelerate the delivery of best-in-class medicines to patients globally, ultimately improving their lives.
What You Will Achieve
In this role, you will:
Conduct qualitative and quantitative analyses of various biotherapeutic products and vaccines, to determine their quality during manufacture and during determination of their shelf life.
Perform analytical method lifecycle activities such as verification, qualification, validation, and transfer activities for complex biotherapeutics (mAb, mAb-like), antibody drug conjugates, therapeutic proteins, and vaccines.
Maintain written records of all experimental work in compliance with GLP/GMP and departmental SOPs.
Assist in the maintenance and renewal of laboratory instruments and systems and improve safe and effective working practices.
Attend team meetings to present data and apply technical skills and knowledge to solve complex investigation problems.
Work under moderate supervision with regular review and identify activities to support work group/project team goals
Contribute to the achievement of immediate work group goals and collaborate with other team members across the larger analytical organization.
Prioritize work to meet project deadlines and ensure participation and contribution as a team member.
Continuously improve safe and effective working practices in the laboratory environment.
Perform and troubleshoot as necessary analytical assays, while applying these methods across a board range of early and late-stage products in a cGMP environment.
Qualifications
Must Have
BA/BS with 3 to 5 years of experience performing biotherapeutics testing in an R&D or GMP (preferable) environment.
Master's Degree with 0 to 4 years of experience performing biotherapeutics testing in an R&D or GMP (preferable) environment.
Strong documentation skills and attention to detail
Some experience with method validation and method transfer
Ability to extract relevant information from scientific literature
Proficiency in recording observations, facts, data, and conclusions during experimental work or cGMP investigations
Solid understanding of fundamental biochemistry, including functional group recognition and compound characterization
Experience using spectroscopic (e.g., UV-VIS, fluorescence spectroscopy) chromatographic techniques (e.g., HPLC/UPLC) or experience in bioassay techniques (e.g., ELISA or cell-based bioassays)
Experience in GMP laboratory operations and logistics
Effective interaction with peers and leaders as part of a multi-disciplinary team
Strong evidence of growth mindset and ability to work as part of a diverse team
Strong verbal and written communication skills
Nice to Have
Understanding of software systems used in biotherapeutics testing environments (EMPOWER, Labware LIMS or ELN or similar, SoftMax)
Good Laboratory Practices (part of GxP) and Good Manufacturing Practices (also cGMP) knowledge
Problem-solving skills and the ability to make decisions based on limited options or limited informaiton
Initiative and proactive approach to tasks and projects
Experience using common AI tools, including generative technologies such as ChatGPT or Microsoft Copilot, to support problem solving and enhance productivity.
Physical/Mental Requirements
Position requires occasional light lifting and periods of standing, sitting, or walking.
Non-standard Work Schedule, Travel Or Environment Requirements
Position requires occasional off shift work (evenings).
Work location assignment: On Premise
The annual base salary for this position ranges from $68,600.00 to $114,300.00. In addition, this position is eligible for participation in Pfizer’s Global Performance Plan with a bonus target of 7.5% of the base salary.
We offer comprehensive and generous benefits and programs to help our colleagues lead healthy lives and to support each of life’s moments. Benefits offered include a 401(k) plan with Pfizer Matching Contributions and an additional Pfizer Retirement Savings Contribution, paid vacation, holiday and personal days, paid caregiver/parental and medical leave, and health benefits to include medical, prescription drug, dental and vision coverage.
Learn more at Pfizer Candidate Site – U.S. Benefits | (uscandidates.mypfizerbenefits.com). Pfizei compensation structures and benefit packages are aligned based on the location of hire. The United States salary range provided does not apply to Tampa, FL or any location outside of the United States.
Relocation assistance may be available based on business needs and/or eligibility.
Candidates must be authorized to be employed in the U.S. by any employer.
U.S. work visa sponsorship (such as TN, O-1, H-1B, etc.) is not available for this role now or in the future.
Sunshine Act
Pfizer reports payments and other transfers of value to health care providers as required by federal and state transparency laws and implementing regulations. These laws and regulations require Pfizer to provide government agencies with information such as a health care provider’s name, address and the type of payments or other value received, generally for public disclosure. Subject to further legal review and statutory or regulatory clarification, which Pfizer intends to pursue, reimbursement of recruiting expenses for licensed physicians may constitute a reportable transfer of value under the federal transparency law commonly known as the Sunshine Act. Therefore, if you are a licensed physician who incurs recruiting expenses as a result of interviewing with Pfizer that we pay or reimburse, your name, address and the amount of payments made currently will be reported to the government. If you have questions regarding this matter, please do not hesitate to contact your Talent Acquisition representative.
EEO & Employment Eligibility
Pfizer is committed to equal opportunity in the terms and conditions of employment for all employees and job applicants without regard to race, color, religion, sex, sexual orientation, age, gender identity or gender expression, national origin, disability or veteran status. Pfizer also complies with all applicable national, state and local laws governing nondiscrimination in employment as well as work authorization and employment eligibility verification requirements of the Immigration and Nationality Act and IRCA. Pfizer is an E-Verify employer. This position requires permanent work authorization in the United States.
Pfizer endeavors to make accessible to all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process and/or interviewing, please email This is to be used solely for accommodation requests with respect to the accessibility of our website, online application process and/or interviewing. Requests for any other reason will not be returned.
To learn more about acceptable and prohibited uses of AI during the recruitment process, please review our candidate AI-use guidelines available on Pfizer Careers.
Research and Development
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Worksite address
chesterfield, MO, 63005, US
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.