Senior Associate Scientist, Process Development

Use Your Power for Purpose

At Pfizer, our purpose is to deliver breakthroughs that change patients’ lives. Your contributions will be pivotal in translating advanced science and technologies into impactful therapies and vaccines, ultimately improving patient outcomes globally. Whether you are involved in discovery sciences, ensuring drug safety and efficacy, or supporting clinical trials, you will leverage cutting-edge design and process development capabilities to accelerate and deliver top-tier medicines to patients worldwide.

What You Will Achieve

In this role, you will:

Contribute to immediate work group goals and collaborate with team members to achieve project objectives

Perform process scale-down studies for characterizing and supporting the manufacturing of therapeutic vaccines and other drug substances

Implement technology and continuous process development to ensure success

Serve as a Technical Expert for manufacturing methods, conducting scientific studies and recommending improvements for reliability, cost, safety, compliance, and environmental performance

Troubleshoot and improve established manufacturing processes, ensuring robustness and efficiency

Represent MSAT in cross-functional project teams and participate in technical writing and review.

Maintain laboratory areas and equipment in a clean, safe, and functional order, complying with safety and regulatory requirements

Independently plan and perform work assignments, interpret and present data, and provide support for product transfers, new product development, and cost improvement projects

Design and execute studies while prioritizing work to meet project deadlines and solving moderately complex problems under moderate supervision

Here Is What You Need (Minimum Requirements)

Bachelor’s Degree with at least 3 years of experience or an MBA/MS with any years of experience.

Degree in Chemistry, Biochemistry, Chemical Engineering or related discipline.

Strong working knowledge of chemistry and ability to safely perform laboratory work

Ability to perform complex data analysis

Proficiency in troubleshooting technical issues

Experience in planning and carrying out experiments independently

Competence with MS Office as well as complex laboratory instrumentation and software

Excellent oral and written communication skills

Bonus Points If You Have (Preferred Requirements)

Hands-on experience in bioconjugation chemistry, normal flow filtration, and tangential flow filtration of proteins and/or polysaccharides

Strong knowledge and experience with international CMC regulatory requirements

Familiarity with Current Good Manufacturing Practices (part of GxP)

Ability to work effectively in a team environment

Strong organizational and time management skills

Experience with statistical experimental design and analysis using relevant software packages

Experience using common AI tools, including generative technologies such as ChatGPT or Microsoft Copilot, to support problem solving and enhance productivity. Demonstrated curiosity for exploring how these tools can improve outcomes and understanding of responsible AI practices, including risk management and ethical use

PHYSICAL/MENTAL REQUIREMENTS

Ability to perform mathematical calculations, analyze scientific data, draw scientifically sound conclusions and follow laboratory procedures.

NON-STANDARD WORK SCHEDULE, TRAVEL OR ENVIRONMENT REQUIREMENTS

Flexible work hours (shift or weekend work) may be required to complete experiments at times.

Must wear personal protective equipment when required for lab safety (e.g. safety shoes, lab coat, gloves, safety glasses, goggles, face shield).

Other Job Details:

Last day to Apply: October 21, 2026

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

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   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   disabilityrecruitment@pfizer.com . 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