Pfizer

Senior ML/AI Cheminformatics Scientist

Pfizer$93K — $156K *
Pharmaceuticals & Biotech
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • PhD in a relevant field OR relevant Master's degree with 2+ years of experience in Cheminformatics, Computational Chemistry, Bioinformatics, or Data Science.
  • Proficiency in Python; experience with cheminformatics libraries (e.g., RDKit, OpenEye).
  • Experience in a structured collaborative data/software development environment (e.g., Git).
  • Familiarity with SAR model-building software (e.g., SciKit-Learn, Torch).
  • Strong understanding of statistical concepts to evaluate model performance.

Responsibilities

  • Develop and apply cheminformatics algorithms for molecular modeling and analysis.
  • Process chemical and biological datasets to evaluate drug-likeness and ADMET properties.
  • Maintain and optimize AI/ML models for property prediction and data pipelines.
  • Collaborate with cross-functional teams to integrate computational approaches in workflows.
  • Ensure data integrity and proper documentation of QSAR AI/ML models.

Benefits

  • Comprehensive health benefits including medical, prescription drug, dental, and vision coverage.
  • 401(k) plan with matching contributions and additional retirement savings contributions.
  • Paid vacation, holidays, and personal days.
  • Paid caregiver/parental and medical leave.
  • Relocation support may be available based on needs.
Full Job Description

ROLE SUMMARY

As a Senior Cheminformatics Data Scientist within the Computational Absorption, Distribution, Metabolism, and Excretion (cADME) group in Pfizer’s Pharmacokinetics, Dynamics, and Metabolism (PDM) organization, you will apply data-driven approaches to address critical challenges in small-molecule drug discovery.

In this role, you will develop, deploy, and continuously improve machine learning models for molecular property prediction and leverage Pfizer’s proprietary chemical and biological datasets to inform decision-making across hit-to-lead and lead optimization stages. Your work will directly enable more efficient compound prioritization, improved prediction of ADME properties, and accelerated progression of discovery programs.

Success in this position will be defined by the delivery of robust, validated computational models and workflows that generate actionable insights and measurable impact on project outcomes. You will collaborate closely with cross-functional PDM partners and external collaborators to integrate AI-driven approaches into discovery workflows and maximize the value of Pfizer’s industry-leading data assets.

KEY RESPONSIBILITIES

  • Develop and apply cheminformatics data-mining algorithms for the analysis of molecular modeling, virtual screening, and structure-activity relationship (SAR) analysis. Process and analyze chemical and biological datasets to evaluate properties such as drug-likeness, ADMET properties, dosing, etc.

  • Utilize molecular fingerprints, descriptors, and similarity metrics for compound clustering, classification, and regression.

  • Assist in development, maintenance, and monitoring of AI/ML models used for property prediction. Optimize data pipelines for processing and storing chemical structures using cheminformatics toolkits (e.g., RDKit, OpenEye,)

  • Collaborate with cross-functional teams to integrate computational approaches into curation and analysis workflows

  • Maintain best practices in data integrity, reproducibility, and documentation of QSAR AI/ML models

MINIMUM QUALIFICATIONS

  • PhD in a relevant field OR

  • Relevant Master's degree with 2+ years of experience in Cheminformatics, Computational Chemistry, Bioinformatics, Data Science, or a related field.

  • Proficiency in Python, with experience with cheminformatics libraries and topics (RDKit, OpenEye, DeepChem, InChI, SMILES/SMARTS).

  • Experience working in a structured collaborative data and software development environment (git).Experience using SAR model-building software such as SciKit-Learn, Torch, etc.

  • Strong understanding of basic statistical concepts and how to evaluate and track model performance.

PREFERRED QUALIFICATIONS

  • Experience using DAGs to define data pipelines, e.g., Luigi, Airflow, Dagster, Prefect, Kubeflow.)
  • Experience working with relational (SQL) and NoSQL databases for chemical data management.
  • Experience working with MLOps tools such as MLFlow, Neptune, or SageMaker.

PHYSICAL/MENTAL REQUIREMENTS

Ability to perform mathematical calculations and ability to perform complex data analysis

NON-STANDARD WORK SCHEDULE, TRAVEL OR ENVIRONMENT REQUIREMENTS

Some travel required

Relocation support available

WORK LOCATION ASSIGNMENT: This is a hybrid role requiring you to live within commuting distance and work on-site an average of 2.5 days per week.

The annual base salary for this position ranges from $93,600.00 to $156,000.00. In addition, this position is eligible for participation in Pfizer’s Global Performance Plan with a bonus target of 12.5% 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.

Research and Development

About Pfizer

Hospira, Inc. is the provider of injectable drugs and infusion technologies. Through its broad, integrated portfolio, Hospira is uniquely positioned to Advance Wellness™ by improving patient and caregiver safety while reducing healthcare costs. The company is headquartered in Lake Forest, Ill., and has approximately 16,000 employees.

Pfizer Careers

Joining Pfizer’s global team offers more than just job opportunities; it’s a chance to be a part of a company that leads with science and innovates for better health. As a leading biopharmaceutical company, Pfizer is at the forefront of transforming lives through innovation, leadership, and diversity. Work You’ll Do At Pfizer, you will collaborate with some of the brightest minds in the industry, engaging in work that enhances global health and saves lives. Our culture thrives on intellectual curiosity, professional growth, and inclusivity, making every day a learning opportunity. Here, your skills will be honed, your professional acumen will be expanded, and you will be part of a team that values the power of diverse insights to drive success. Pfizer’s Leadership and Growth Lead and innovate with Pfizer, where we value the growth of each employee. Our leadership is committed to providing employees with the training and resources needed to excel in their careers. Pfizer offers a variety of career paths, including roles in research, marketing, finance, technology, and more, each offering a unique blend of challenges and rewards. Internship and Employment Opportunities Start your career with Pfizer through our internship programs or dive straight into a full-time position. We are hiring individuals who are passionate about healthcare and who seek to make a difference in the world. Our internships provide invaluable industry experience, networking opportunities, and a potential pathway to full-time employment. Benefits and Culture Pfizer is dedicated to fostering a workplace where all employees feel valued and can achieve their full potential. We offer competitive benefits packages that support the health, well-being, and financial security of our employees and their families. At Pfizer, you’ll find a culture that encourages collaboration, innovation, and continuous learning. Join Our Team Explore the numerous job opportunities at Pfizer by searching open positions that match your skills and interests. We look for driven, curious, and innovative team players who are ready to advance their careers in a transformative company. Stay Connected Keep up to date with career tips, insider perspectives, and industry-leading insights you can put to use today—all from the people who work here. Personalize your subscription to receive job alerts, latest news, and insider tips tailored to your preferences. Discover the exciting and rewarding career opportunities that await at Pfizer. Interview and Resume Tips Prepare for your future with Pfizer by utilizing our resources for resume building and interview preparation. We provide guidance on how to effectively showcase your skills and experiences to align with the needs of a position at Pfizer. Our goal is to help you succeed in securing a role that suits your professional goals and personal growth aspirations. Pfizer: A Place Where You Can Make a Difference Every position at Pfizer contributes to our mission of making the world a healthier place. Whether through direct patient care, research innovation, or corporate roles that support our operations, your work will have global impact. Join us in our journey to change lives—explore Pfizer careers today.
Learn more about Pfizer
Size
79,000 employees
Market Cap
$285.9 billion
Industry
Net Income
$9.6 billion
Founded
1849
5 Year Trend
+9%
Revenue
$41.9 billion
NASDAQ

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