Senior AI Scientist for Frontier Biomedical ML

Pfizer Inc; San Diego (CA); Hybrid; USD 106,000 - 177,000; Full time

Benefits offered by this job

Health benefits

Job summary

Pfizer Inc. is seeking a Senior Machine Learning Research Scientist to advance AI methods across drug discovery and development.

You will develop foundation models, multimodal and graph-based approaches, and agentic systems, tackling high-value biomedical problems. You will design controlled experiments, validate models, and collaborate with AI researchers, computational biologists, and domain experts to drive research into practical discovery programs.

Qualifications

• PhD in Machine Learning, AI, CS, Statistics or related field preferred.
• Master’s degree with 2+ years of relevant industry or research experience.
• Strong Python and PyTorch, with familiarity in JAX or similar frameworks.

Responsibilities

• Develop Frontier AI methods for biomedical research and build foundation models.
• Design and execute rigorous, controlled experiments with clear hypotheses.
• Set scalable evaluation standards and validate model robustness and generalization.
• Translate research results into credible scientific evidence for programs.

Skills

Python

PyTorch

JAX

Statistical analysis

Education

PhD in ML/AI or related field

Master's degree + 2 years experience

Tools

Distributed training

Experiment tracking

Shared evaluation pipelines

Job description

Pfizer Inc. is seeking a Senior Machine Learning Research Scientist to advance AI methods across drug discovery and development.

You will develop foundation models, multimodal and graph-based approaches, and agentic systems, tackling high-value biomedical problems. You will design controlled experiments, validate models, and collaborate with AI researchers, computational biologists, and domain experts to drive research into practical discovery programs.