Principal Scientist

POSITION SUMMARY

As a member of our Quantitative Metabolism team within ADME (Absorption, Distribution, Metabolism and Excretion) Sciences, you will help advance Pfizer’s small molecule portfolio from discovery through development.

You will shape fit-for-purpose ADME strategies, identify and mitigate disposition risks, and translate enzymology and ADME data into evidence-based recommendations that guide discovery and development project decisions. This includes owning scientific questions from hypothesis generation through experimental strategy, data generation and interpretation, risk assessment, and communication of clear recommendations to teams.

KEY RESPONSIBILITIES

• Serve as the ADME scientific owner for assigned project questions, influencing strategy as an active partner on departmental discovery and development project teams and aligning recommendations with project needs and key stakeholder priorities.
• Own the design, execution, and interpretation of fit-for-purpose enzymology studies that address key questions in clearance, disposition, in vitro-to-in vivo translation, and DDI risk.
• Integrate in vitro ADME data to identify liabilities, define next-step experiments, and propose mitigation strategies to enable project progression.
• Provide scientific ownership for key ADME risk assessments, such as determining whether clearance mechanisms, enzyme involvement, induction or inhibition liabilities are sufficiently understood to support project decisions.
• Lead from the lab by designing and executing impactful experiments while maintaining high scientific rigor and data quality.
• Mentor scientists through experimental oversight, technical guidance, data review, and coaching that builds scientific independence.
• Identifies capability gaps, and creates new options through technology, external networks, partnerships, or novel approaches

MINIMUM QUALIFICATIONS

• PhD in a related science discipline with 4 or more years of relevant industry experience in an ADME sciences related field, **OR**
• MS in a related science discipline with 9 or years of relevant industry experience in an ADME sciences related field, **OR**
• BS in a related science discipline with 12 or more years of relevant experience in an ADME sciences related field.
• Knowledge of enzymology/drug metabolism principles, such as enzyme kinetics, reaction phenotyping, drug-drug interactions, and pharmacokinetic predictions.
• Experience independently leading complex ADME workstreams, integrating study design, data interpretation, and scientific recommendations that support project decision making and advance our predictive sciences.
• Strong written and verbal communication skills, including experience preparing technical reports, project recommendations, presentations, or external scientific communications.
• Experience coaching or mentoring scientists through technical guidance, experimental planning, and data review.

PREFERRED QUALIFICATIONS

• Expertise in another ADME science discipline, such as biotransformation, transporters, or PBPK modeling.
• Experience connecting mechanistic ADME findings to chemistry, translational sciences, clinical pharmacology, toxicology, regulatory strategy, or nonclinical study packages.
• Experience supporting beyond-rule-of-five compounds or using long-term culture systems to address ADME questions.
• Record of improving assays, workflows, data quality, or technology implementation, including responsible use of common AI tools such as Microsoft Copilot to enhance problem solving and productivity.
• Broader scientific impact through internal guidance, external publications, conference presentations, or ADME/DMPK best practices.

PHYSICAL/MENTAL REQUIREMENTS

• Laboratory work, use of laboratory equipment, and adherence to safe laboratory practices
• Occasional lifting
• Mathematical calculations and complex data analysis

NON-STANDARD WORK SCHEDULE, TRAVEL OR ENVIRONMENT REQUIREMENTS

• Periodic travel to meet with internal and external partners

WORK LOCATION ASSIGNMENT

This is a lab based position requiring the colleague to work onsite 5 days a week. This is not a hybrid position.

The annual base salary for this position ranges from $106,000.00 to $176,600.00. 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.

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 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 View email address on click.appcast.io. 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