Senior ML Research Scientist — Biomedical AI for Medicines

Pfizer; Groton (CT); Hybrid; USD 106,000 - 177,000; Full time

Job summary

Pfizer is seeking a Senior Machine Learning Research Scientist to advance AI methods in biomedical research. You will develop foundation models, multimodal and graph-based approaches, and agentic reasoning systems that can span oncology, immunology, internal medicine, vaccines and beyond.

You will design controlled experiments, build robust evaluation pipelines, and translate research into trusted capabilities deployed across Pfizer’s R&D programs.

Qualifications

• PhD in ML/AI/CS/Stats or related quantitative field preferred.
• Master’s degree with 2+ years relevant industry or research experience.

Responsibilities

• Develop Frontier AI methods for biomedical research and test across therapeutic areas.
• Design and execute rigorous, reproducible experiments with clear hypotheses.
• Set evaluation standards at scale with robust datasets and benchmarks.
• Translate results into scientific evidence with domain experts and engineers.
• Build reusable model components, benchmarks, and workflows for cross‑disease use.
• Raise the scientific bar by contributing to reviews, planning, and mentorship.

Skills

Python

PyTorch

JAX

Experiment design

Statistical analysis

Reproducible research

Uncertainty handling

Interpretability

Distributed training

Education

PhD in ML/AI/CS/Stats/Applied Math/Computational Biology

Master’s degree with 2+ years relevant experience

Job description

Pfizer is seeking a Senior Machine Learning Research Scientist to advance AI methods in biomedical research. You will develop foundation models, multimodal and graph-based approaches, and agentic reasoning systems that can span oncology, immunology, internal medicine, vaccines and beyond.

You will design controlled experiments, build robust evaluation pipelines, and translate research into trusted capabilities deployed across Pfizer’s R&D programs.