Pfizer Posted September 7, 2026

Senior Associate Scientist - Process Development

Pearl River, United States Full time
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About this opportunity

Why Patients Need You

Pfizer’s purpose is to deliver breakthroughs that change patients’ lives. Process Development is at the heart of fulfilling this purpose as we translate advanced science into streamlined, robust processes that deliver medicines to patients globally.

What You Will Achieve

As a Senior Associate Scientist within the Early Bioprocess Development (EBPD) group in the Vaccines organization, you will apply cutting-edge technologies to accelerate the development of high-quality protein subunit vaccines. This role is highly technical and collaborative, requiring deep hands-on expertise in molecular biology, cell culture, and data-driven process optimization.

Your goals will be:

Optimize cell line development workflows to improve subunit protein expression, overall productivity, process efficiency and biological robustness of the production systems

Execute fermentation to characterize key performance indicators including cell fitness, growth, recovery, protein production yield, protein purity etc.

Perform data analysis to identify patterns, establishing quantitative correlations between input parameters such as DNA sequences and output values such as protein yield and quality.

Present experimental data and strategic conclusions at cross-functional meetings, contributing to team-wide knowledge sharing.

How You Will Achieve It

Collaborating with multi-disciplinary teams and working closely with the cell culture, purification, mRNA production and analytical groups.

Maintain impeccable, timely records in Electronic Laboratory Notebooks (ELNs) and author comprehensive technical/production reports.

Draft, review, and contribute to internal technical reports and external scientific publications.

Contribute to building a culture that embraces excellence, urgency, partnerships with key stakeholders, continuous learning and improvement, increasing technical skill base and other cross-functional expertise.

Ensure all tasks and responsibilities are carried out according to scientific, ethical and regulatory standards.

Qualifications

Must-Have

B.S. degree with 3 to 5 years of relevant industry or research experience, or M.S. in bioengineering, biochemistry, chemical engineering or related fields with 0 to 3 years of experience

Experience in aseptic cell culture techniques, including cell passaging and maintenance, transfection, monitoring cell morphology and viability.

Experience in using flow cytometry, and cell sorting cytometers as well as flow cytometry analysis software such as FlowJo.

Knowledge and hands-on experience in molecular biology techniques including DNA/RNA extraction, PCR, ddPCR, RT-PCR, ligation, cloning, transformation, gel electrophoresis, SDS-PAGE, western blot, ELISA.

Well organized, self-motivated, team-oriented with high attention to detail.

Strong collaborative spirit and communication skills.

Nice-to-Have

Experience in setting up, feeding, sampling and controlling benchtop or single-use bioreactors (batch, fed-batch)

Hands-on knowledge and experience with NGS sequencing platforms.

OTHER JOB DETAILS

Work Location Assignment: On site


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


Job details

Seniority
Senior
Function
Manufacturing & CMC
Therapeutic area
Not listed
Location
Pearl River, United States
Employment type
Full time

How this role compares

Computed from every other active Manufacturing & CMC role in our database, not just this employer's listings.

We currently track 676 comparable Senior Manufacturing & CMC roles across 84 biopharma companies.

676Comparable roles tracked
611Currently active
84Companies hiring similar roles
36Countries represented

Salary context

262 of 676 peers report a salary range (USD, annualized)

Peers share this role's job function and a matching or adjacent seniority level -- not necessarily the same therapeutic area or country.

This roleSubject $68,600/yr – $114,300/yr
Lowest disclosed · Senior Technician Calibration - Maintenance · Mylan Technologies, Inc. $37,000/yr – $80,000/yr
Highest disclosed · Principal Scientist, Oral Formulation Sciences · Merck $173,200/yr – $272,600/yr
Peer group range $58,500 – $222,900 (median $151,700)

Where these roles are based

Top locations among the 676 comparable roles

United States450
India35
Ireland28
Netherlands24
United Kingdom15
Switzerland11

+ 30 more countries

Seniority mix

676 of 676 peers have a known seniority level

Senior428
Principal134
Associate Director114

Therapeutic area mix

6 of 676 peers have a known therapeutic area; the rest are genuinely unlabeled, not hidden

Vaccines & Infectious Disease3
Oncology2
Dermatology & Aesthetics1

Similar opportunities

The closest matches from our peer group, ranked by how similar they are, not how well you'd qualify for them -- treat this as market context, not a guaranteed shortlist; a weak match is labeled as one below.

60%similar
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60%similar
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Notify me about similar jobs

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How we calculate "similar"

No black box, no LLM guesswork: a deterministic score built from four normalized attributes. Here's this role's own peer group at different match levels, so you can see the mechanism, not just the result.

Every comparison starts from the same 100-point budget: 25 for working in the same function, 40 for the same therapeutic area, 20 for the same or adjacent seniority, 15 for the same country. A dimension we can't confirm on both sides contributes nothing, never a guess, never a free pass.

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Unmatched or unknown dimensions score exactly the same: 0 points, never a partial guess. A role we know almost nothing about beyond its function bottoms out at 25%; it never inflates to 100% just because there's little to compare against. Seniority uses a defined ladder (Associate → Manager → Associate Director → Senior → Principal → Director → Senior Director → Executive/VP) so "Director" and "Senior Director" count as adjacent, but "Director" and "Executive/VP" do not.