Senior Principal ML Scientist - Frontier AI for Medicine

Pfizer Inc; Bothell (WA); Hybrid; USD 139,000 - 232,000; Full time

Benefits offered by this job

401(k) plan with Pfizer Matching

Paid vacation and holidays

Parental and caregiver leave

Health benefits

Job summary

Pfizer Inc. is seeking a Senior Principal Machine Learning Scientist to develop and advance machine learning methods that reason across complex biomedical and clinical data.

You will work with AI researchers, computational biologists, engineers, and domain experts to push state-of-the-art methods into real discovery programs. We offer meaningful ownership, collaboration across R&D, and opportunities to ship AI capabilities that improve patient outcomes.

Qualifications

• PhD in ML/AI/CS or related field; 2+ years of experience preferred.
• Master’s degree with 5+ years of relevant industry or research experience.

Responsibilities

• Develop frontier AI methods for biomedical research.
• Design and execute rigorous experiments with clear hypotheses.
• Set evaluation standards at scale via robust datasets and benchmarks.
• Translate results into scientific evidence for programs.
• Mentor colleagues and raise AI fluency across R&D.

Skills

Python

PyTorch

JAX

Experimental design

Reproducible research

Education

PhD in ML/AI/CS or related field

Master’s degree with 5+ years of relevant experience

Tools

Experiment tracking

Distributed training

Job description

Pfizer Inc. is seeking a Senior Principal Machine Learning Scientist to develop and advance machine learning methods that reason across complex biomedical and clinical data.

You will work with AI researchers, computational biologists, engineers, and domain experts to push state-of-the-art methods into real discovery programs. We offer meaningful ownership, collaboration across R&D, and opportunities to ship AI capabilities that improve patient outcomes.