Senior AI Scientist, Biomedical Discovery

Pfizer Belgium; Bothell (WA); Hybrid; USD 106,000 - 177,000; Full time

Job summary

Pfizer is seeking a Senior Machine Learning Research Scientist to develop frontier AI methods for biomedical research, including foundation models, multimodal approaches, and agentic reasoning systems. You will design controlled experiments and build benchmarks to translate research into real scientific value across drug discovery programs.

Collaborating with AI researchers, computational biologists, engineers, and domain experts, you will advance methods that scale, generalize across diseases,

Qualifications

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

Responsibilities

• Develop Frontier AI methods for biomedical research.
• Design and execute rigorous experiments.
• Set evaluation standards at scale.
• Translate models into scientific evidence.
• Build reusable foundations, benchmarks, and workflows.
• Raise the scientific bar and mentor colleagues.

Skills

Python

PyTorch

JAX

Experiment design

Multimodal learning

Foundation models

GNNs

Biological data

Clinical AI

Omics data

Knowledge graphs

Agentic AI

Education

PhD in ML/AI/CS or related

Master’s + 2+ years experience

Job description

Pfizer is seeking a Senior Machine Learning Research Scientist to develop frontier AI methods for biomedical research, including foundation models, multimodal approaches, and agentic reasoning systems. You will design controlled experiments and build benchmarks to translate research into real scientific value across drug discovery programs.

Collaborating with AI researchers, computational biologists, engineers, and domain experts, you will advance methods that scale, generalize across diseases,