P

Pfizer

Makes cancer drugs, vaccines and other medicines

Bacterial Immunoassay Development Senior Scientist

Full-TimeUpdated on 10/23/2026
$93.6k - $156k/yr
Junior, Mid
Master's, MBA, PhD, Bachelor of Arts (BA), Bachelor of Science (BS)
Pearl River, NY, USA
In PersonOn-premise role in Pearl River, New York.
Biology & BiotechTranslational Research & Bench Biology
No H1B Sponsorship

About the job

Requirements
  • Advanced knowledge of immunological principles and bacterial vaccine evaluation is required.
  • A PhD in immunology, microbiology, biological sciences, or a related discipline with 0 to 3 years of experience; an MBA or MS with 7 to 8 years of experience; or a BA or BS with 9 to 11 years of experience is required.
  • Demonstrated experience in immunoassay development, qualification, validation, and clinical testing is required.
  • Hands-on experience with ELISA, multiplex immunoassays, functional antibody assays, or related immunological techniques is required.
  • Strong capabilities in experimental design, data analysis, troubleshooting, and scientific problem-solving are required.
  • Ability to lead scientific initiatives and collaborate effectively across multidisciplinary teams is required.
  • Strong written and verbal communication skills are required.
  • Candidates must be authorized to be employed in the United States by any employer.
  • Permanent work authorization in the United States is required.
Responsibilities
  • Apply advanced knowledge of bacterial immunology, immunoassay platforms, and functional assay methodologies to support vaccine development programs.
  • Serve as a technical expert in the development, optimization, qualification, validation, and lifecycle management of bacterial immunoassays.
  • Lead assay activities across development, including assay design, feasibility assessment, method optimization, validation, technology transfer, and clinical sample testing support.
  • Develop and evaluate innovative approaches, methodologies, and hypotheses to improve assay performance and address scientific challenges.
  • Resolve moderately complex scientific and technical issues involving assay performance, data interpretation, and clinical study support.
  • Adapt and refine established methodologies while maintaining data quality, reproducibility, and compliance with applicable quality and regulatory requirements.
  • Work independently, manage assigned priorities, and engage colleagues and cross-functional partners to address emerging scientific questions and program needs.
  • Interpret and communicate complex data to project teams and stakeholders to support decisions across preclinical and clinical vaccine programs.
  • Collaborate with clinical, statistical, regulatory, quality, and laboratory operations partners to support assay implementation and timely delivery of clinical testing data.
  • Contribute to technical reports, regulatory submissions, scientific publications, and presentations.
Desired Qualifications
  • An equivalent combination of education and relevant industry experience demonstrating expertise in bacterial immunoassay development, validation, and clinical testing will also be considered.
  • Proficiency with personal computers, including word processing, spreadsheets, Excel, PowerPoint, and relevant scientific software is preferred.
  • Excellent organizational skills and the ability to manage time effectively are preferred.
  • Strong interpersonal skills and the ability to work collaboratively within a team are preferred.
  • Experience using common artificial intelligence tools, including generative technologies such as ChatGPT or Microsoft Copilot, to support problem solving and enhance productivity is preferred, along with curiosity about how these tools can improve outcomes and understanding of responsible artificial intelligence practices, including risk management and ethical use.

About the company

Pfizer discovers, makes, and sells prescription medicines and vaccines for patients, doctors, and governments worldwide, with large businesses in vaccines, cancer, heart disease, and rare diseases. In 2020, its COVID-19 shot, developed with German partner BioNTech, became the first COVID-19 vaccine authorized in the United States. Its scientists find drug candidates and run clinical trials to prove they are safe and effective, and Pfizer then manufactures approved products in its own plants, earning most of its money from patented drugs before cheaper generic copies arrive. Pfizer was founded in 1849 as a chemicals business in Brooklyn and is based in New York City.

Company Size

10,001+

Company Stage

IPO

Headquarters

New York City, New York

Founded

1849

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Simplify's Take

What believers are saying

  • Newer drugs carry the business: launched and acquired products grew 18% operationally in Pfizer's August 2026 quarterly report.
  • The outlook improved: in August 2026, Pfizer raised its 2026 revenue guidance to $60.5 billion to $62.5 billion.
  • Vaccine scientists get room to grow: Pfizer's $470 million Pearl River, New York research expansion is designed for 370 workers.

What critics are saying

  • Expect more site cuts: in November 2025, Pfizer moved to shrink Swiss staff from about 300 to roughly 70.
  • Generics will erase sales: Pfizer expects patent losses to cut $17 billion to $18 billion of yearly revenue through 2028.
  • Pfizer is chasing obesity leaders: Metsera's monthly shot showed 12.3% weight loss at 28 weeks in February 2026 data.

What makes Pfizer unique

  • Pfizer bought its way into cancer: its Seagen buyout added antibody-drug conjugates, which carry chemotherapy straight to tumors.
  • Pfizer is betting on monthly obesity shots: Metsera's berobenatide is dosed once a month, unlike weekly Wegovy and Zepbound.
  • Pfizer leans on one partnered heart drug: blood thinner Eliquis, sold with Bristol Myers Squibb, brings about 14% of revenue.

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Benefits

  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • 401(k) Retirement Plan
  • 401(k) Company Match
  • Paid Vacation
  • Paid Sick Leave
  • Paid Holidays
  • Hybrid Work Options
  • Relocation Assistance

Growth & Insights and Company News

6 month growth

-4%

1 year growth

-3%

2 year growth

-3%
Yahoo Finance
Oct 22nd, 2026
Pfizer's 5.7% yield signals risk: dividends took 108% of free cash flow vs Merck's 66%

Merck's dividend looks safer than Pfizer's, despite Pfizer's higher yield, according to a 24/7 Wall St. comparison. Pfizer yields about 5.7% against Merck's 2.2%. In 2025, Pfizer's dividends used 108% of free cash flow, while Merck's used 66%. In the first half of 2026, Merck's free cash flow covered 174% of its payout; Pfizer's covered about 51%. Merck has raised its quarterly dividend 39% since 2020, to $0.85. Pfizer's rose 13% and has been flat at $0.43 since January 2025. Pfizer is cheaper, at about 10 times 2026 earnings against Merck's 17. Pfizer targets a return to growth from 2029, while Merck's newer drugs are already selling.

Yahoo Finance
Oct 21st, 2026
Pfizer announces layoffs at Rocky Mount and Sanford sites, but gives no numbers

Pfizer has announced layoffs at its Rocky Mount and Sanford facilities in North Carolina, as part of a push to improve efficiency. It told employees of the cuts on Tuesday but did not say how many jobs will go, when, or in which departments. Rocky Mount makes sterile injectables, while Sanford focuses on vaccines and advanced biologics, including gene therapies. "Headcount reductions are a part of this initiative," Pfizer said, adding that it will give affected staff support services. "If indeed this happens, it's going to affect those families," said David Farris, president and chief executive officer of the Rocky Mount Area Chamber of Commerce. The impact on local economies, he said, depends on the number laid off. As of Wednesday afternoon, no Worker Adjustment and Retraining Notification (WARN) notice had been filed with the state.

Yahoo Finance
Oct 19th, 2026
Five low-beta dividend stocks: Pfizer yields 5.83%, Coca-Cola raises payout since 1999

Five defensive dividend stocks offer income with less volatility than the broader market, according to a 24/7 Wall St. analysis. All five have a beta well below 1, meaning they have historically moved less than the market. Pfizer leads with a forward yield of 5.83% at $29.49 a share. AT&T yields 4.77% at $23.27, and its $1.11 dividend uses about 42% of 2026 free cash flow guidance of $18B+. Debt of $144B is its main risk. Dominion Energy yields 4.24%, while Coca-Cola and Colgate-Palmolive each yield 2.27%. Coca-Cola has raised its dividend every year since 1999, and Colgate's next ex-dividend date is October 20, 2026.

Yahoo Finance
Oct 15th, 2026
GSK beats Pfizer as dividend stock: 39% payout vs 89% of free cash flow

GSK looks the better dividend stock than Pfizer, according to a comparison of the two drugmakers, which both face major patent losses before 2030. Pfizer yields 6.3% and GSK 4.1%. Over the twelve months to June 2026, Pfizer paid out 89% of its free cash flow in dividends ($9.79 billion of $10.98 billion), against 39% at GSK (£2.67 billion of £6.90 billion). Pfizer's chief executive officer, Albert Bourla, said the dividend will be maintained even in "the most stretched scenarios." Pfizer raised its 2026 revenue guidance to $60.5 billion to $62.5 billion. GSK raised its dividend 17.6% in fiscal 2025 after an earlier cut, and Q2 2026 sales rose 5%. Its main risk is debt: net debt rose to £22 billion after the Nuvalent acquisition.

Yahoo Finance
Oct 14th, 2026
Pfizer's 6% dividend pays investors to wait as oncology pipeline drives growth beyond COVID-19

Pfizer offers a dividend yield of just over 6% while it builds growth beyond its COVID-19 products. The drugmaker declared a quarterly dividend of $0.43 in June 2026, its 351st consecutive quarterly payment. In the second quarter, revenue from launched and acquired products rose 18% year over year. Pfizer raised the midpoint of its full-year guidance, helped by stronger non-COVID sales from drugs such as Eliquis, Padcev, and Vyndaqel. Oncology is the next focus. Pfizer is investing in antibody-drug conjugates and bispecific antibodies, and it entered a global collaboration with Innovent Biologics covering 12 early-stage cancer programs. Not every experimental drug will succeed, but a broader pipeline improves the odds. If new medicines work, the share price could rise on top of the dividend income.