Senior Associate Scientist-Vaccine Development (Analytical, Assays)

Use Your Power for Purpose
At Pfizer, our purpose is to deliver breakthroughs that change patients' lives. This is a laboratory‑based position within the Vaccine Research & Development Analytical Development organization.
The Senior Associate Scientist will support vaccine programs through analytical method development, sample testing, and data interpretation, with a primary focus on separation‑based analytical techniques.
What You Will Achieve

• Perform analytical method development and sample testing under manager supervision in support of vaccine process development, formulation development, release, stability, and characterization.
• Apply separation-based techniques, including but not limited to: HPLC (SEC, IEX, RP) and CE
• Utilize LC MS-based methods for characterization of vaccine antigens and related analytes.
• Execute method verification, qualification, and optimization studies under appropriate supervision.
• Analyze and interpret experimental data; summarize results and conclusions clearly and provide to the manager.
• Document experimental work contemporaneously in electronic laboratory notebooks in compliance with internal standards.
• Author and review analytical methods, protocols, and technical notes or method qualification reports with appropriate guidance.
• Participate in general laboratory activities, including instrument maintenance, reagent management, and laboratory housekeeping.
• Work in compliance with applicable data integrity expectations, as required.
• Continuously improve safe and effective working practices in the laboratory environment

Qualifications
Must Have

• BS with 3 to 5 years of relevant experience, or MS with 0 to 3 in Chemistry, Biochemistry, Analytical Chemistry, or related field.
• Hands‑on experience with chromatographic or electrophoretic separations.
• Strong data analysis, documentation, and communication skills.
• Ability to work effectively in a team‑based laboratory environment.

Nice to Have

• LC‑MS experience supporting proteins and/or mRNAs preferred.
• Experience using common AI tools, including generative technologies such as ChatGPT or Microsoft Copilot, to support problem solving and enhance productivity.
• Experience with liquid chromatography-mass spectrometry (LC‑MS)

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). Pfizer 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
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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 www.pfizer.com/careers 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 [email protected] . 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