Senior Associate Scientist

Use Your Power for Purpose

At Pfizer, our mission is to deliver breakthroughs that transform patients' lives. Within the Inflammation and Immunology Therapeutic Area, we translate cutting-edge science and technology into impactful therapies for autoimmune and inflammatory diseases.

The Preclinical In Vivo Pharmacology group is seeking a highly motivated Senior Associate Scientist to support the expansion, optimization, and application of our in vivo platforms, with a particular focus on humanized systems, including human stem cell engrafted mouse models.

In this role, you will design and execute studies to characterize emerging in vivo models and evaluate the efficacy and mechanisms of novel small- and large-molecule therapeutics. Responsibilites will include aseptic handling of immunocompromised animals, dosing, tissue collection, and ex vivo analyses such as flow cytometry and MSD immunoassays. You will analyze, interpret, and communicate your high-quality data to advance program decision-making and contribute meaningfully to our therapeutic portfolio.

Join our collaborative team and help drive impactful science that improves patient outcomes.

What You Will Achieve

In this role, you will:

• Expand critical capabilities by designing and executing comprehensive in vivo model-development studies

• Support the portfolio by planning and conducting pharmacology studies to evaluate mechanisms of action and therapeutic efficacy for pipeline molecules

• Perform specialized research using human cell-engrafted immunocompromised mice, including aseptic execution of cell preparation and in vivo techniques

• Profile models and drug performance through tissue collection and ex vivo assays, including flow cytometry and multiplex immunoassays

• Generate high quality data packages with well documented methods, analyses, and interpretations for project team presentations

• Enhance operational efficiency and scientific impact by collaborating with partner line colleagues, including modelers and statisticians, and across in vivo teams, including neuro- and lung- inflammation-focused groups

Here Is What You Need (Minimum Requirements)

• A Bachelor's Degree with =3 years of relevant experience or a Master's Degree with =1 year of relevant experience

• Foundational knowledge of immunology, autoimmunity, and pharmacology

• Experience in in vivo preclinical research, ideally in a biotech or pharmaceutical environment

• Proficiency with in vivo techniques, including intraperitoneal, oral, and intravenous dosing; submandibular bleeds; aseptic handling of immunocompromised mice; and tissue collection

• Hands-on experience with tissue processing for and execution of molecular biology techniques, including flow cytometry, multiplex immunoassays, and RT-PCR

• Proficiency with data analysis and documentation tools like Excel, GraphPad Prism, FlowJo, PowerPoint, and Signals Electronic Lab Notebook

• Strong time-management skills with the ability to follow established protocols, develop new methods and troubleshoot independently

• Excellent written and verbal communication skills; strong organizational skills; and attention to detail

• Ability to work independently as well as collaboratively within multidisciplinary teams

Bonus Points If You Have (Preferred Requirements)

• Experience with cell culture and human primary cell handling

• Familiarity with animal models of neuroinflammation and/or lung inflammation, including relevant techniques such as intracerebroventricular injection/implantation and/or intratracheal dosing

• Skills in tissue sectioning, histology, and immunostaining

NON-STANDARD WORK SCHEDULE, TRAVEL OR ENVIRONMENT REQUIREMENTS

• May require weekend work

• Requires the use of a respirator or PAPR in the animal facility

Additional Information:

• Work Location Assignment: On Premise

• Last Day to Apply: February 13, 2026

The annual base salary for this position ranges from $68,600.00 to $110,900.00. 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.

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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.

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Research and Development