Demo

Principal Scientist

Pfizer
Cambridge, MA Full Time
POSTED ON 1/28/2026 CLOSED ON 3/28/2026

What are the responsibilities and job description for the Principal Scientist position at Pfizer?

Principal Scientist United States - Massachusetts - Cambridge Full time Posted 1 Days Ago 4949934 Job Responsibilities The Pharmacokinetics, Dynamics and Metabolism (PDM) department in Pfizer Inc. is looking to identify a project representative who will serve as an integral project team member representing PDM on small molecule (including protein degraders, molecular glues, etc.) and protein therapeutics (e.g., peptides, mAbs, mAbs-conjugates, fusion proteins, etc.) research and development programs. In this role, you will be expected to ensure effective integration of absorption, distribution, metabolism & excretion (ADME) characterization and optimization, bioanalysis, translational pharmacokinetics/pharmacodynamics (PK/PD), and immunogenicity strategies into research objectives to facilitate the advancement of novel chemical and biological entities. While doing so, you will also work closely in a matrix-team environment with ADME scientists from multiple (small molecule and biologics) modalities to ensure the execution of appropriate experimental plans and data interpretation to provide strategic directions to discovery project teams. As a PDM point-of-contact for the discovery project teams, you will utilize ADME knowledge gathered from disposition studies to influence all stages of the discovery phase including hit-to-lead, lead development and candidate optimization. You will also interphase with pharmacologists, toxicologists, PK/PD modelers and clinical pharmacokineticists to develop translational pharmacology plans, human pharmacokinetics, dose and therapeutic margin projections for clinical candidates. In the preclinical development phase, you will interphase with asset development teams and contribute to the design and execution of regulatory toxicology studies, prepare the regulatory dossier with relevant ADME information, respond to regulatory queries, and support early clinical human pharmacokinetics, safety, and tolerability studies. Central to this role is an ability to propose practical solutions to address complex ADME and pharmacology hurdles as they arise in early discovery, and an ability to grasp multiple drug disposition concepts as applicable to both small and large molecule modalities. How You will Achieve It Application of functional/technical knowledge to design appropriate in vitro and in vivo disposition studies in collaboration with the PDM matrix team to explore ADME issues in small and large molecule drug discovery programs Provide strategic directions to multidisciplinary project teams through interpretation and effective communication of experimental ADME data Ensure effective use of internal and external PDM resources to deliver project milestones Advance scientific and technology (including AI strategies) innovation and excellence that translate to portfolio impact Minimum Requirements PhD level education with post-doctoral and/or some industry experience (or BS/MS with 10–14 years of prior experience) with graduate research focus on topics related to drug/xenobiotic disposition within small or large molecule realm, medicinal chemistry, physical organic chemistry/computational ADME, biochemistry, or pharmacokinetics (quantitative pharmacodynamics modeling), with a strong record of scientific achievements (e.g., peer-reviewed publications) Excellent interpersonal, written/verbal communication and presentation skills, with an ability to collaborate effectively within a multidisciplinary team environment Preferred Skills Demonstrated expertise in one or more areas of drug disposition science (small and/or large molecules), drug metabolism/enzymology, medicinal chemistry, protein analytics, modeling and simulation etc. with an emphasis on innovative problem-solving approaches to scientific problems Mechanistic modeling/simulation of pharmacokinetics and pharmacodynamics data Broad understanding of pharmacokinetics and drug (small molecules and biologics) concepts Skills in coding and/or innovative use of AI approaches in biopharmaceutical research PHYSICAL/MENTAL REQUIREMENTS Sitting, Standing, Walking, ability to perform mathematical calculations and ability to perform complex data analysis. NON-STANDARD WORK SCHEDULE, TRAVEL OR ENVIRONMENT REQUIREMENTS Travel and adhere to safe work practices Relocation support available Work Location Assignment: Hybrid The annual base salary for this position ranges from $106,000.00 to $171,500.00. In addition, this position is eligible for participation in Pfizer’s Global Performance Plan with a bonus target of 15.0% of the base salary and eligibility to participate in our share based long term incentive program. 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. 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. Research and Development

Salary : $106,000 - $171,500

If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Principal Scientist?

Sign up to receive alerts about other jobs on the Principal Scientist career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$130,030 - $173,363
Income Estimation: 
$194,895 - $259,743
Income Estimation: 
$192,057 - $260,440
Income Estimation: 
$249,515 - $311,938
Income Estimation: 
$155,477 - $213,492
Income Estimation: 
$72,001 - $91,803
Income Estimation: 
$88,975 - $120,741
Income Estimation: 
$68,121 - $81,836
Income Estimation: 
$71,928 - $87,026
Income Estimation: 
$125,958 - $157,570
Income Estimation: 
$87,704 - $110,366
Income Estimation: 
$120,989 - $162,093
Income Estimation: 
$74,806 - $91,633
Income Estimation: 
$71,928 - $87,026
Income Estimation: 
$145,337 - $174,569
Income Estimation: 
$139,626 - $193,276
Income Estimation: 
$194,895 - $259,743
Income Estimation: 
$192,057 - $260,440
Income Estimation: 
$249,515 - $311,938
Income Estimation: 
$155,477 - $213,492
Income Estimation: 
$112,363 - $146,135
Income Estimation: 
$153,127 - $203,425
Income Estimation: 
$139,626 - $193,276
Income Estimation: 
$164,650 - $211,440
Income Estimation: 
$130,030 - $173,363

Sign up to receive alerts about other jobs with skills like those required for the Principal Scientist.

Click the checkbox next to the jobs that you are interested in.

  • Concept Development Skill

    • Income Estimation: $68,346 - $86,637
    • Income Estimation: $90,632 - $119,010
  • Conceptual Design Skill

    • Income Estimation: $71,252 - $93,927
    • Income Estimation: $68,346 - $86,637
This job has expired.
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at Pfizer

  • Pfizer Birmingham, AL
  • Role Summary The Retail Pharmacy Account Manager (RAM) is responsible for developing durable business, deepening collaboration with Retail Pharmacy Field L... more
  • 8 Months Ago

  • Pfizer Phoenix, AZ
  • Role Summary All over the world, Pfizer colleagues work together to positively impact health for everyone, everywhere. Our colleagues can grow and develop ... more
  • 8 Months Ago

  • Pfizer Tucson, AZ
  • Role Summary All over the world, Pfizer colleagues work together to positively impact health for everyone, everywhere. Our colleagues can grow and develop ... more
  • 8 Months Ago

  • Pfizer Kalamazoo, MI
  • QC Laboratory Analyst III (2nd Shift) United States - Michigan - Kalamazoo Full time Posted 1 Days Ago 4950328 Use Your Power for Purpose Every day, Pfizer... more
  • 8 Months Ago


Not the job you're looking for? Here are some other Principal Scientist jobs in the Cambridge, MA area that may be a better fit.

  • Exponent Natick, MA
  • About Exponent Exponent is the only premium engineering and scientific consulting firm with the depth and breadth of expertise to solve our clients’ most p... more
  • 8 Months Ago

AI Assistant is available now!

Feel free to start your new journey!